JPH0415296A - Sliding and rolling members and plain sleeve bearing, roll bearing and plain sleeve bearing for use in roll rocker arm, using same members - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is aimed at improving the first #JI lubrication performance between the surfaces of two sliding or rolling members, one made of ceramics and the other metal. The present invention relates to a sliding or rolling member with surface treatment, a sliding or rolling bearing using the member, and a sliding bearing for a roller rocker arm.

[Conventional technology]

Conventionally, high-speed internal combustion engines 9 For example, since the engine speed of an automobile engine is relatively high, durability has been improved by using sliding or rolling bearings for the abutting parts (tabent parts) with the cams in the mouth and rear arms. things are being done.

On the other hand, it is known that reducing the reciprocating mass of a valve train that operates in conjunction with a high-speed rotating engine helps to reduce the inertial force applied thereto, making it easier to improve its durability.

For example, as described in Japanese Utility Model Application No. 62-03911, a first conventional example is known in which the durability of a roller rocker arm in a valve train is improved by forming the roller from a ceramic material. ing.

In this first conventional example, a roller (also called a "ring")
is made of ceramic material, and the roller pin (also referred to as "shaft") is made of metal (aluminum alloy). However, since there is a difference in hardness between ceramics and metals,
There is a problem in that the shaft is easily damaged when there is insufficient lubrication.

Therefore, there is a second conventional example of a roller for a rocker arm in which a ceramic ring and a metal ring are integrally combined (
Utility Model No. 63-42805).

According to this second conventional example, by arranging the metal ring on the roller bin side, it is possible to solve the wear problem of the first conventional example and to improve durability due to weight reduction.

However, in the second conventional example, it is difficult to join the ceramic ring and the metal ring together, and there are problems in that it is not suitable for mass production, such as increasing costs.

Therefore, in a ceramic-metal sliding or rolling member such as the one seen in the Ronca arm part, the problem was solved in the first conventional example by keeping the ceramic-metal contact, for example, without providing a metal ring as in the second conventional example. Of course, it would be desirable if such a reduction in wear and friction could be achieved.

Therefore, as described in "Friction and wear characteristics between ceramic and steel under lubrication" in the proceedings of the 31st National Conference of the Japanese Society of Lubrication (Nagoya) (1986), pages 433-436,
There is a third prior art example in which reduction in frictional wear between ceramic steels is achieved by adding a phosphorous additive to the base oil.

[Problem to be solved by the invention]

In the third conventional example, a compound film is formed on the friction surface due to frictional heat in the boundary lubrication region, resulting in friction and F! ! This aims to reduce wear and tear.

However, in this conventional example, a considerable amount of time is required from the start of lubrication to the start of the reaction between the contact surfaces of the two members and the additive, so there is a drawback that the effect is not immediate.

Therefore, it takes time to form a compound film, and early wear occurs.*
There was a problem in that it was impossible to avoid seizure in the early stages of rubbing 7.

Therefore, in order to solve such problems, this invention
Good lubrication performance can be achieved by improving initial lubrication performance such as low friction, wear resistance, and seizure resistance at the initial stage of lubrication in sliding or rolling members made of ceramic-metal. It is an object of the present invention to provide a sliding or rolling member that can be maintained over the entire period of the present invention, a sliding or rolling bearing using the same, and a sliding or rolling bearing for a rocker arm.

[Means to solve the problem]

To achieve this objective, the invention uses a sliding or rolling motion. A compound reaction film layer having wear resistance, low friction, and seizure resistance is formed in advance on the sliding or rolling contact surface on the metal side of a sliding or rolling member made of ceramic on one side and metal on the other side. It is something. still,
In the present invention, "sliding" is used as a concept that also includes r-sliding 1.

Here, the compound-reactive film layer has wear resistance, low mIF property, and seizure resistance, and is made of a chemically active organic compound (for example, an organic sulfur compound).

A layer formed by a chemical reaction between an organic phosphorus compound, an organic chlorine compound, an organic metal compound) and a sliding or rolling member, and is made of an inorganic and/or organic metal compound on the surface that has properties different from those of the bulk. means. By reacting the sliding or rolling member with at least one of the organic compounds, a small amount (or at least one of the metal compounds) of an inorganic and/or organic metal compound, such as a metal phosphorus compound, a metal sulfur compound, or a metal chlorine compound, is formed on the surface of the member. This metal compound corresponds to the compound reaction film layer.

That is, due to the reaction between the sliding or rolling member and the organic phosphorus compound, an organic phosphorus compound-reactive film layer corresponding to this reaction is formed. A corresponding organic sulfur compound-reactive film layer is formed by reaction with an organic sulfur compound, a corresponding organic chlorine compound-reactive film layer is formed by reaction with an organic chlorine compound, and an organometallic compound-reactive film layer is formed by reaction with an organometallic compound. Formed on the surface of a sliding or rolling member. In this compound-reactive film layer, the sliding or rolling member is made of an organic phosphorus compound,
Organic phosphorus compound-reaction film layer formed by reacting an organic sulfur compound, an organic chlorine compound, and at least one organic metal compound, organic sulfur compound-reaction film layer, organic chlorine compound-reaction film layer 1 organic It consists of at least one type of metal compound-reactive film layer.

The organic phosphorus compound-reactive film layer includes a reaction film layer formed by reacting with at least one of phosphorous esters, orthophosphoric esters, and acidic phosphoric esters.

The organic sulfur compound-reactive film layer includes a reaction film layer formed by reacting with at least one of sulfurized oils and fats, sulfurized olefins, mercaptans, sulfides, sulfoxides, and sulfones.

Furthermore, the organic chlorine compound-reactive film layer includes a reaction film layer formed by reacting with chlorinated paraffins and/or chlorinated oils and fats.

Furthermore, as the organometallic compound-reactive film layer, metal dihydrothiophosphates are used.

There is a reaction film layer formed by reacting with at least one of metal dihydrocarbyl dithiocarbamates and naphthenic acid metal salts.

The thickness of this compound reaction film is 0.05 to 0.5 μm.
It is desirable that

In the sliding bearing of the present invention, the sliding surface is formed of a sliding member on which the compound reaction film layer is formed. Further, in the rolling bearing of the present invention, the rolling surface is formed of a rolling member on which the compound reaction film layer is formed.

Furthermore, the sliding bearing for a roller low force arm of the present invention includes a ring driven by a cam and a shaft that supports this ring, and the ring is made of ceramics and the shaft is made of metal. The compound reaction film layer is formed on the sliding contact surface.

[Effect]

When two members, one made of ceramic and the other made of metal, are in sliding or rolling contact, the sliding or rolling contact surface on the metal side is surface-treated to form a film that has wear resistance, low friction, and seizure resistance. By forming a compound reaction film layer in advance, it is possible to prevent direct contact between ceramic and metal that occurs at the initial stage of lubrication under conventional lubrication conditions where such a compound reaction film layer is not formed in advance, and improve initial lubrication performance. I can do it.

That is, in the case where the two members that are in sliding or rolling contact are ceramic and metal, by forming the compound reaction film on the contact surface of the metal side in advance, wear, friction, and seizure in the initial stage of lubrication can be prevented. Good lubrication performance can be maintained throughout the entire lubrication period.

The present invention will be explained in detail below.

The compound-reactive film layer can be formed by reacting the sliding or rolling member with at least one of an organic phosphorus compound, an organic sulfur compound, an organic chlorine compound, and an organic metal compound. A compound reaction film layer formed by reacting with an organic phosphorus compound is called an organic phosphorus compound-reaction film layer, and a reaction film layer formed by reacting with an organic sulfur compound is called an organic sulfur compound-reaction film layer. The reaction film layer formed by reacting with a phosphorus compound is called an organochlorine compound-reaction film layer, and the reaction film layer formed by reacting with an organometallic compound is called an organometallic compound-reaction film layer. It is called.

Organic phosphorus compounds that can be used to form the reaction membrane layer include phosphorous esters, orthophosphoric esters, acidic phosphoric esters, and the like.

The above phosphite esters are hydrocarbons of 01 to Cl1l (eg, alkyl, phenyl, benzyl).

Phosphite esters of cresyl, cinnamyl, allyl), such as trioctyl phosphite, triphenyl phosphite, tricresyl phosphite, bis-2
- Ethylhexylphosphite, tridecylphosphite, dibutylhydrodienephosphite, tris(nonylphenyl)phosphite, dilaurylhydrodienephosphite, diphenylmonodecylphosphite, trilauryltrithiophosphite.

Diphenylhydrodiene phosphite and the like are preferred.

Orthophosphoric acid esters include C3 to CI I+ hydrocarbons (eg, alkyl, phenyl, benzyl).

Orthophosphoric acid esters of cresyl, cinnamyl, allyl), such as triphenyl phosphate, triethyl phosphate, tributyl phosphate, tris(2-
Preferred examples include ethylhexyl phosphate, tridecyl phosphate, diphenyl mono(2-ethylhexyl) phosphate, tricresyl phosphate, trioctyl phosphate, and tristearyl phosphate.

Further, the acidic phosphoric acid ester is a C6-C2° mono- or dihydrocarbyl aracitophosphate, such as methyl aracitophosphate.

Isopropyl ancitophosphate Butyl acid phosphate 22-Ethylhexyl ancitophosphate Isodecyl arashido phosphate, Tridecyl arashido phosphate.

Lauryl aracid phosphate and the like are preferred.

Organic sulfur compounds that can be used to form the reaction membrane layer include, for example, sulfurized fats and oils such as sulfurized whale oil, sulfurized olefins, mercaptans, sulfides, sulfoxides, and sulfones.

The above-mentioned sulfurized olefins are sulfides of C3 to C11 olefins or low molecular weight polyolefins derived therefrom, such as sulfurized pentene, sulfurized butylene, sulfurized octene, and the like.

Mercaptans are alkyl mercaptans and mercapto fatty acid esters of 04 to C2°, such as n-butyl mercaptan, isobutyl mercaptan, tert-butyl mercaptan, n-octyl mercaptan, tert-nonyl mercaptan, tert-dodecyl mercaptan, thioglycolic acid. Butyl, ethyl thioropionate, octyl 3-mercaptopropionate and the like are preferred.

Sulfides are hydrocarbons of 04 to CI8 (f14
x Ha, alkyl, phenyl, benzyl, cinnamyl, allyl) monosulfide (-5-), butylphide (-5-3-), polysulfide (-3-3-)
5-), for example, dibutyl monosulfide, dibutyl disulfide, diphenyl sulfide, dibenzyl sulfide, etc. are preferred.

The sulfoxides are sulfoxides of 04 to C2 degree hydrocarbons (eg, alkyl, phenyl, benzyl, cinnamyl, allyl), and preferred examples include dibutyl sulfoxide and dibenzyl sulfoxide.

The sulfones are 04-C2° alkyl, phenyl, hensyl cinnamyl, and allyl sulfones, such as dibutyl sulfone and didodecyl sulfone.

Phenylsulfone and the like are preferred.

Organic chlorine compounds that can be used to form the reaction membrane layer include chlorinated paraffins, chlorinated oils and fats, and the like.

Examples of chlorinated paraffins include n-octyl chloride, chlorinated paraffin, and octadecyl chloride, and examples of chlorinated fats and oils include chlorinated whale oil.

Furthermore, the organometallic compounds that can be used to form the organometallic compound-reactive film layer include metal dihydrocarbyl dithiophosphates, metal dihydrocarbyl dithiocarbamates, naphthenates, and the like.

The above metal dihydrocarbyl dithiophosphates are
Metal dihydrocarbyl dithiophosphates in which each hydrocarbyl group is 04 to C(11), such as Zn dimethyl dithiophosphate, Zn butyl isooctyl dithiophosphate, Zn di(4-methyl-2-pentyl) dithiophosphate, Zn Di(tetrapropenylphenyl) dithiophosphate, Zn (2-ethyl-1-hexyl) dithiophosphate, Zn (isooctyl) dithiophosphate, Zn (ethylphenyl) dithiophosphate 1-, Zn (amyl) dithiophosphate Zn di(hexyl)dithiophosphate, or the above zinc (Zn) as a metal, as well as lead (P)
b), cadmium (Cd), antimony (sb), molybdenum (MO), etc. are preferred.

Metal dihydrocarbyl dithiocarbamates are metal dihydrocarbyl dithiocarbamates in which each hydrocarbyl group is 04 to C2°, such as Zn dimethyl dithiocarbamate, Zn butyl isooctyl dithiocarbamate, Zn di(4 to methyl-2-pentyl ) dithiocarbamate, Zn di(tetrapropenylphenyl) dithiocarbamate, Zn (2-ethyl-1-hexyl) dithiocarbamate, Zn (isooctyl) dithiocarbamate, Zn (ethylphenyl) dithiocarbamate, Zn
(amyl) dithiocarbamate, Zn di(hexyl) dithiocarbamate, or the above zinc (Z
In addition to n), materials such as lead (Pb), cadmium (Cd), antimony (Sb), and molybdenum (Mo) are preferable.

The naphthenic acid salts are metal salts of naphthenic acid, such as lead naphthenate.

The various compounds forming the compound reaction membrane layer as described above can be used as they are, or in a diluted state dissolved in oil or a solvent, in a concentration range of 0.1 to 100 wt%. Here, as the oil, non-polar oils such as Eva, purified paraffin, diphenyl, etc. can be used, and as the solvent,
For example, non-polar solvents such as toluene can be used. Other oils and solvents can be used, but non-polar ones are preferred.

When forming a compound reaction film, each of the above-described organic phosphorus compounds, organic sulfur compounds, organic chlorine compounds, and organic metal compounds at a predetermined concentration is used alone or as a mixture of a plurality of types. In particular, studies have revealed that when an organic phosphorus compound and an organic sulfur compound are mixed, the rate of formation of a compound reaction film increases due to the interaction between the two.

Note that within the same type of compounds, each specific compound may be used alone or in combination.

An organic phosphorus compound-reactive film layer is formed on the metal side surface of the sliding or rolling member depending on the type and content of each of the above-mentioned compounds used alone or in a mixture.

An organic sulfur compound-reactive film layer, an organic chlorine compound-reactive film layer, an organometallic compound-reactive film layer, or a compound reaction film in which two or more of these are mixed can be formed.

The metal side of the sliding member or rolling member to be treated is immersed in the compound solution previously adjusted to the predetermined concentration described above, and the temperature is controlled to a predetermined temperature within the range of room temperature to 120°C. By reacting for a predetermined time within a range of 5 to 8 hours, a thickness of 0.05 to 0.05 mm is formed on the surface of the object to be treated.
A compound reaction film layer with a thickness of 5 μm can be formed. In short, the compound solution concentration, reaction layer degree, and reaction time are controlled so that the compound reaction film layer thickness on the metal side surface of the sliding or bearing member is within the range of 0.05 to 0.5 μm.

In the process of forming the compound reaction film layer, for example, if ultrasonic waves or the like are used at a predetermined temperature, the uniformity of the reaction formed film can be improved and the reaction rate can be increased.

A high-speed four-ball test was conducted on rolling members whose surfaces were treated in this way and compound reaction film layers of various thicknesses were formed.
If the film thickness is less than 0.05 μm or more than 0.5 μm, seizure or vibration will occur.
．． It has been experimentally confirmed that very good results can be obtained with a thickness of 0.05 to 0.3 μm.

It is sufficient that the surface treatment of the present invention is applied to the sliding or rolling contact surface on the metal side of the sliding or rolling member. However, other portions may be surface-treated. In this way, if this surface treatment is applied to the contact surface on the metal side between members that are in sliding or rolling contact, it is possible to create sliding or rolling members that have sufficiently improved low friction, low wear, load capacity, and seizure resistance. can be provided.

In the present invention, one of the members forming sliding or rolling contact is ceramic. As such ceramics, for example, in addition to the well-known silicon nitride, Sialon (trade name), silicon carbide, alumina, zirconia, and the like can be used.

On the other hand, the other member is made of metal. Metal parts include high chromium bearing steel such as bearing steel type II (SUJ2) and 5CR4.
Case hardening steel such as 20H may also be used.

The sliding or rolling member of the present invention is realized by use in a sliding bearing or a rolling bearing.

For example, it is used in a roller rocker arm of a valve train of an internal combustion engine, and is realized as a sliding bearing for a roller rocker arm by constructing a ring that contacts a cam and a shaft that contacts this ring using the sliding member. . Further, the cam and the ring may be formed of the rolling member.

Furthermore, the rolling elements and the bearing ring can also be formed from the rolling member.

The sliding or rolling member of the present invention is of course effective when used under oil lubrication, but it is also effective under lubrication without oil, such as between a cam and a ring.

〔Example] Examples of the present invention will be described below.

Fig. 1 shows an embodiment in which the sliding member according to the present invention is applied to a sliding bearing for a roller rocker arm, and shows an end face of a valve train tappet part (cam side end of a roller rocker arm) of an internal combustion engine. The figure is shown below.

To explain the structure shown in FIG. 1, on the cam l side of the rocker arm 3, there is constructed a sliding bearing 10 consisting of a ceramic ring 5 and a shaft 4 made of bearing steel that supports this ring.

The eccentric cam 1 is supported by a camshaft 2 and rotated by a piston (not shown).

By driving this cam, the ring comes into contact with the cam and is driven. The ring 5 rolls on the circumference of the cam 1, but the inner peripheral surface of the ring 5 and the outer peripheral surface of the shaft 4 slide.

In this embodiment, the compound reaction film layer 6 is formed in advance on the outer circumferential surface of the shaft 4, as shown in FIG. 2, which is an enlarged view of the bearing section.

With such a configuration, it is possible to improve the initial lubrication performance and avoid initial wear, friction, seizure, etc.

In this embodiment, instead of forming a compound reaction film layer on the outer peripheral surface of the shaft 4, a similar compound reaction film layer may be formed on the inner peripheral surface of the ring 5 as shown in FIG. Of course. Furthermore, it is of course possible to achieve the same effect by forming similar compound reaction film layers on both the outer circumferential surface of the shaft 4 and the inner circumferential surface of the ring 5.

Incidentally, as shown in FIG. 4, which is an enlarged view of the ring 5, the compound reaction film layer 6 may also be formed on the outer peripheral surface of the ring 5 corresponding to the cam (made of metal) side.

In this case, wear resistance and low friction between the cam and the ring are improved. However, instead of forming the compound reaction film layer on the outer peripheral surface of the ring 5, the compound reaction film layer may be formed on the side surface of the ring of the cam, or both may be used.

Next, specific examples will be described.

[Example 1] In this example, 1/2 inch bearing steel (SUJ
2) The steel manufacturing method is used as the test taste, and for this test taste, AST
Lubricating properties were tested using a four-ball tester based on MD-2783 (maximum number of rotations on the vertical axis was 2000 rpm).

During this test, the steel balls were mixed with 5% by weight of refined oil containing tridecyl aracide phosphate (a mixture of tridecyl monoaracid phosphate and tridecyl diacid phosphate), which is a highly reactive acidic phosphoric acid ester. The surface was modified by immersing it in a diluted solution and reacting at a reaction temperature of 40° C. for 2 hours to form a compound reaction film layer with a thickness of about 0.3 μm.

The composition and physical properties (mechanical strength, adhesion, uniformity, lubricity, etc.) of the formed reaction film are determined by the hydrocarpyl group chemical structure (R=C, ~C2, which is It depends on the dilution concentration in the oil or solvent (which may be aliphatic, aromatic, or a mixture thereof), and the film thickness depends on the processing temperature and time. Therefore,
The reaction conditions are determined taking these into consideration. The compound reaction film layer thickness was measured using an X-ray photoelectron spectrometer (XPS).

Using a 1/2 inch silicon nitride ball having the same surface roughness as the steel ball with a compound reaction film layer formed on its surface as a rotating ball, the seizure resistance, which correlates with the initial lubrication properties, was evaluated under the following conditions. went.

(1) Fill the oil container with test lubricating oil (mineral oil) and
Temperature adjusted to °C, pv value 600 kgf/sm"mi
Run it for one minute at s.

(2) After - minutes had elapsed, the lubricating oil from the oil bath was instantly removed and the time until seizure occurred and the coefficient of friction were measured.

In addition, when evaluating this seizure resistance, for comparison, both the rotating ball and the fixed ball were made of unmodified steel balls (SUJ2), and the rotating ball was made of unmodified silicon nitride and the fixed ball was made of the same method. A similar test was conducted using the unmodified steel ball.

The above results are shown in Table 1.

As can be seen from Table 1, it was revealed that the combination of silicon nitride and modified 5UJ-2 steel balls had the lowest coefficient of friction and was also excellent in seizure resistance.

This demonstrated that by forming a compound reaction film layer that becomes a compound film on the surface of a steel ball, it is possible to reduce *i between the two surfaces of the ceramic metal and reduce wear and improve seizure resistance.

In this example, a case has been described in which a compound reaction film layer is formed on a steel ball, but it goes without saying that the same effect can be achieved by forming a compound reaction film layer on the surface of a silicon nitride ball.

Furthermore, it goes without saying that the same effect can be achieved even if a compound reaction film layer is formed on both sides. In addition, ceramics
Good results can also be obtained by forming the compound reaction film layer on either or both of the surfaces of the two ceramic members.

[Example 2] A similar evaluation of seizure resistance was performed by changing the thickness of the compound reaction film formed on the steel ball. In this example, the rotating ball is the unmodified silicon nitride ball, and the fixed ball is the modified steel ball (S
UJ2).

A compound reaction membrane layer with six different thicknesses was prepared,
The time until burn-in occurred was measured. The results are shown in Table 2.

(Hereinafter, blank space) Table 2 As can be seen from Table 2, the compound reaction film thickness is 0°05~
It can be seen that good lubrication performance is obtained with the thickness of 0.5 μm. In addition, when the compound reaction film thickness was 0.8 μm, vibration and friction were large during operation. Further, the same was true for the case where the compound reaction film thickness was 0.01 μm.

[Example 3] Instead of the surface modification treatment of Example 1, the following treatment was performed on a fixed ball, ie, a steel ball.

Zinc dihydrocarbyl dithiophosphate containing 20.7% sulfur in the molecule was diluted in refined oil to a concentration of 1 wt%, and a steel ball was immersed in this and reacted at 120"CX for 24 hours. As a result, A compound reaction film having a thickness of 0° to 1 μm was formed.

Regarding such surface-modified steel balls, the time until occurrence of seizure was measured in the same manner as in Example 1 using an unmodified silicon nitride ball as a rotating ball.

As a result, a seizure occurrence time of 1"50" was obtained.

(Example 4) Instead of the surface modification treatment of Example 1, the following treatment was performed on a fixed ball, ie, a steel ball.

As a butylphide with two sulfur atoms in the molecule, t
50wt of ert-octyldisulfite in refined oil
%, immerse a steel ball in it and heat it at 60°C
The reaction was carried out for a period of time to form a compound reaction film layer with a film thickness of 0.1 μm.

Regarding such surface-modified steel balls, the time until occurrence of seizure was measured in the same manner as in Example 1 using an unmodified silicon nitride ball as a rotating ball.

As a result, a seizure occurrence time of 2'10'' was obtained.

[Example 5] Instead of the surface modification treatment of Example 1, the following treatment was performed on a fixed ball, ie, a steel ball.

N-octyl chloride was diluted to 50 wt % in refined oil, and a steel ball was immersed in this to react at 60° C. for 4 hours to form a compound reaction film layer with a thickness of 0.1 μm.

Regarding such surface-modified steel balls, the time until occurrence of seizure was measured in the same manner as in Example 1 using an unmodified silicon nitride ball as a rotating ball.

As a result, a seizure occurrence time of 2 ゛lO'' was obtained.

[Example 6] An investigation result was obtained that the additive made of an organic sulfur compound and the additive made of an organic phosphorus compound interacted with each other and the reaction to form a compound reaction film layer was likely to proceed.
A steel ball was immersed in a mixture of trioctyl phosphate, a phosphoric acid ester, tridecyl anside phosphate, an acidic phosphoric acid ester, and di-tert-octyl disulfide, an organic sulfur compound, at 5 wt% each.
The reaction was carried out at °C for 2 hours to form a compound reaction film layer with a film thickness of 0.1 μm.

Regarding such surface-modified steel balls, the time until occurrence of seizure was measured in the same manner as in Example 1 using the non-modified silicon nitride method as a rotating ball.

As a result, a seizure occurrence time of 3'00'' was obtained.

Example 6 reveals that even when different types of compounds are mixed and a compound reaction film is formed on the surface of a ceramic-metal sliding or rolling member, good seizure resistance is exhibited.

Although the surface treatment of the present invention has been described for the case where a chemical reaction film layer is formed on the metal side surface of a ceramic-metal member, the same effect can be obtained even if the chemical reaction film layer is formed on both the metal side surface and the ceramic side surface. can be obtained. It is also believed that good effects can be obtained even when applied to members made of ceramic-ceramics and members using non-ferrous materials such as aluminum alloys as the ceramic metal. In addition, the present invention can also be applied to raceway surfaces and cage surfaces of outer or inner rings of sliding bearings, rolling bearings, etc. made of ceramics or metals, and it is also possible to apply the inventive member to gears and the like. Slide bearings, rolling bearings, and gear cylinders assembled using at least one of these element members have extremely good load carrying capacity and seizure resistance.
It can withstand use even under severe conditions where the supply of lubricating oil may be interrupted during operation.

Furthermore, in the sliding or rolling member according to the present invention, the ceramic may be a ceramic member or a ceramic bonded to the surface of a metal member. and,
The metal may be a metal member, or a metal bonded to the surface of a ceramic member.

〔Effect of the invention〕

As explained above, in the sliding or rolling member according to the present invention, the sliding bearing using this member, the rolling bearing, and the sliding bearing for roller Ronca arm, the compound reaction film serving as the compound film is brought into sliding or rolling contact on the metal side. Since it is pre-formed on the surface, it improves the initial lubrication performance such as low friction, wear resistance, and seizure resistance at the initial stage of lubrication, and achieves the effect of maintaining good lubrication performance over the entire lubrication period. can do.

[Brief explanation of drawings]

FIG. 1 is an end view showing the structure of a valve train tappet portion of an internal combustion engine, and FIGS. 2 to 4 are enlarged views showing the structure of a slide bearing for a rocker arm. In the figure, l is a cam, 2 is a camshaft, 3 is a rocker arm, 4 is a shaft, 5 is a ring made of ceramics, 6 is a compound reaction membrane layer, 7 is the inner diameter of the ring made of ceramics, 8 is the outer diameter of the shaft 9 indicates the outer diameter surface of a ring made of ceramics, and 1o indicates a sliding bearing.

Claims (12)

[Claims] (1) In sliding or rolling members that are in sliding or rolling contact with each other, one of which is made of ceramic and the other of which is metal, a sliding or rolling member is characterized in that a compound reaction film layer is previously formed on the sliding or rolling contact surface on the metal side. Or rolling members. (2) The surface-treated layer according to claim (1), wherein the compound-reactive film layer is formed from at least one of an inorganic and/or organic metal phosphorus compound, metal sulfur compound, and metal chlorine compound. Sliding or rolling members. (3) The compound reaction film layer is an organic phosphorus compound reaction film layer, an organic sulfur compound formed by reacting with at least one of an organic phosphorus compound, an organic sulfur compound, an organic chlorine compound, and an organometallic compound. The sliding or rolling member according to claim 1 or 2, characterized in that the sliding or rolling member is at least one of a reaction film layer, an organic chlorine compound-reaction film layer, and an organometallic compound-reaction film layer. (4) The organic phosphorus compound-reactive film layer is a reaction film layer formed by reacting with at least one of phosphorous esters, orthophosphoric esters, and acidic phosphoric esters. The sliding or rolling member according to claim (3). (5) The organic sulfur compound-reactive film layer is a reaction film layer formed by reacting with at least one of sulfurized oils and fats, sulfurized olefins, mercaptans, sulfides, sulfoxides, and sulfones. A sliding or rolling member according to claim (3). (6) Claim (3) characterized in that the organic chlorine compound-reactive film layer is a reaction film layer formed by reacting with chlorinated paraffins and/or chlorinated oils and fats.
Sliding or rolling members as described. (7) The organometallic compound-reactive film layer is a reaction film layer formed by reacting with at least one of metal dihydrocarbyl dithiophosphates, metal dihydrocarbyl dithiocarbamates, and naphthenic acid metal salts. A sliding or rolling member according to claim (3). (8) The sliding according to claim (3), wherein the compound reaction film layer is a reaction film layer formed by reacting a sliding or rolling member with a mixture of an organic phosphorus compound and an organic sulfur compound. Or rolling members. (9) The compound reaction film layer thickness is 0.05 to 0.3 μm
The sliding or rolling member according to any one of claims (1) to (8), characterized in that: (10) A sliding bearing in which a sliding surface is formed by a sliding member on which the compound reaction film layer according to any one of claims (1) to (9) is formed. (11) A rolling bearing in which a rolling surface is formed by a rolling member on which the compound reaction film layer according to any one of claims (1) to (9) is formed. (12) Consisting of a ring driven by a cam and a shaft supporting this ring, the ring is made of ceramics and the shaft is made of metal, and the sliding contact surface of the shaft is provided according to claim (1). A slide bearing for a roller rocker arm, characterized in that the compound reaction film layer according to any one of (11) is formed thereon.