CN110455655B - High-flux detection device and test method for thermal spraying coating - Google Patents
High-flux detection device and test method for thermal spraying coating Download PDFInfo
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- CN110455655B CN110455655B CN201910783340.9A CN201910783340A CN110455655B CN 110455655 B CN110455655 B CN 110455655B CN 201910783340 A CN201910783340 A CN 201910783340A CN 110455655 B CN110455655 B CN 110455655B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N3/40—Investigating hardness or rebound hardness
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- G01Q60/00—Particular types of SPM [Scanning Probe Microscopy] or microscopes; Essential components thereof
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- G—PHYSICS
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- G01Q—SCANNING-PROBE TECHNIQUES OR APPARATUS; APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBE MICROSCOPY [SPM]
- G01Q60/00—Particular types of SPM [Scanning Probe Microscopy] or microscopes; Essential components thereof
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Abstract
The invention discloses a high-flux detection device and a test method for a thermal spraying coating, wherein the high-flux detection device comprises a detection induction module, a part supporting module and a control processing module; the part supporting module divides the whole space into a closed detection area and a conventional detection area by arranging a partition plate, wherein the closed detection area is provided with an SKPM detection unit and an EN detection unit, and the conventional detection area is provided with an AFM detection unit and an FMM detection unit; the invention reasonably integrates the detection parts of the four modules into one device, can quickly, effectively and comprehensively understand the physical and chemical properties of the coating sample, can quickly obtain the relationship between the properties and the tissue and the process, guides the research and development, and establishes a high-throughput evaluation method of the thermal spraying composite coating.
Description
Technical Field
The invention relates to the technical field of surface strengthening and remanufacturing coating detection, in particular to a high-throughput detection device and a testing method for a thermal spraying coating.
Background
Wear, corrosion and the like of mechanical parts are main reasons for failure of the parts, and are key commonality problems related to national life. The nano coating prepared by using thermal spraying technology (flame spraying, plasma spraying, electric arc spraying, explosion spraying and the like) can effectively solve the problem of abrasion and corrosion of mechanical parts.
The requirements of modern engineering on the materials of parts are increasingly multiple, and higher requirements on the hardness, the elastic modulus, the micro-area corrosion, the micro-morphology, the structure and the like of the surfaces of the materials are put forward. The research of the surface coating of the material is an indispensable approach in the method for solving the problem, and the research of the detection means of multiple properties of the coating is very important. Through a large number of researches, most of detection equipment can only detect one or more similar performance parameters of a coating at present, and can detect the coating to obtain a coating microscopic morphology like an Atomic Force Microscope (AFM), a force modulation microscope FMM (Force Modulation Microscopy) can obtain a coating surface microscopic mechanical property, a scanning Kelvin probe microscopy SKPM (SCANNING KELVIN Probe Microcopy) can detect to obtain a coating micro-area electrochemical corrosion property, and an electrochemical noise testing device can obtain a coating in-situ lossless electrochemical noise EN and the like. In order to completely evaluate the performance parameters of the coating, a plurality of samples are generally required to be manufactured, and a plurality of instruments and equipment are required to be searched for detection, so that precious research time is wasted, research efficiency is reduced, and in the process of manufacturing a plurality of research samples and moving and storing the samples, the consistency of the samples is difficult to ensure, thereby increasing errors of detection data and reducing the accuracy of evaluation indexes. The high-throughput rapid detection technology refers to a technology capable of detecting a plurality of samples or the same sample at a time to perform a plurality of detections, and the current high-throughput detection method comprises the following steps: fluorescence detection, ultraviolet-visible absorption spectrum detection, chemiluminescence detection, electrochemical detection and the like; high-throughput detection techniques have many applications in the fields of drug screening, medical diagnostics, gene sequencing, ecology, etc., and are playing an important role, but are still to be developed in the field of surface coating detection; the high-flux rapid detection technology is applied to the thermal spraying coating and has important economic and social significance.
The high-flux detection device for the thermal spraying coating can simply, quickly, effectively and diversified simultaneously and multiply detect one sample of thermal spraying coating. The device has the advantages of short test sample preparation time, short test period, high efficiency and high data reliability, and the successful development of the device can fill the gap of the high-flux detection device for the thermal spraying coating.
Disclosure of Invention
The invention aims to solve the defect of the existing high-flux detection equipment for the thermal spraying coating, and provides a high-flux detection device and a test method capable of simultaneously carrying out multiple detection on a thermal spraying coating sample.
The invention relates to a high-flux detection device for a thermal spraying coating, which comprises a detection induction module, a part supporting module and a control processing module;
The part supporting module comprises a base, a transparent shell, a partition plate, a carrying moving platform and a sample clamp; the transparent shell is detachably fixed on the base to form a closed space, the carrying mobile platform is mounted on the base, the sample is clamped and fixed on the carrying mobile platform through the sample clamp, the partition plate is detachably arranged in the transparent shell and used for separating the closed space into two parts isolated from each other, each part of space contains part of sample, one part of space is a closed detection area, the transparent shell of the other part of space is provided with a vertical slot, the vertical slot is a conventional detection area, and the closed detection area is provided with a gas-liquid inlet and a gas-liquid outlet;
The detection sensing module comprises AFM, FMM, SKPM and EN detection units, wherein an AFM and an FMM are arranged in a conventional detection area, and SKPM and EN are arranged in a closed detection area, and the detection sensing module comprises four partitions, namely an AFM detection unit, an FMM detection unit, a SKPM detection unit, an FMM detection unit, an EN detection unit, a SKPM detection unit, an EN detection unit:
The AFM detection unit comprises an AFM laser, a micro-cantilever, an AFM scanning probe and an AFM surface photoelectric detector, wherein the AFM laser and the AFM surface photoelectric detector are both fixed on the transparent shell, one end of the micro-cantilever is movably connected with the transparent shell, and the AFM scanning probe is fixed on the other end of the micro-cantilever;
the FMM detection unit comprises an FMM pressing head, weights, a load arm, a motor and a threaded rod; the threaded rod is vertically arranged, one end of the threaded rod is fixedly arranged on the base with the bearing, the other end of the threaded rod is connected with the motor output shaft, one end of the load arm of force is in threaded connection with the threaded rod, the other end of the load arm of force penetrates through the slot and stretches into the transparent shell, the upper part of the end of the load arm of force is provided with a weight rod, the lower part of the load arm of force is fixedly provided with an FMM pressing head, and the weight is sleeved on the weight rod;
the SKPM detection unit comprises a SKPM scanning probe, SKPM signal laser and a SKPM signal detector, wherein the SKPM signal laser and the SKPM signal detector are fixed on the partition board, and the SKPM scanning probe is movably connected with the partition board;
The EN detection unit comprises an electrochemical noise detection head which is fixed on the partition plate;
In addition, the detection sensing module further comprises a piezoelectric ceramic scanning tube and a monitoring CCD, wherein the piezoelectric ceramic scanning tube is embedded in the surface of the carrying moving platform, and the piezoelectric ceramic scanning tube is completely covered after the sample is fixed; the monitoring CCD is used for monitoring the detection condition in real time;
The control processing module is realized based on a computer and is used for receiving data of an AFM scanning probe, an AFM surface photoelectric detector, an FMM pressing head, a monitoring CCD, a piezoelectric ceramic scanning tube, an SKPM scanning probe, an EN detecting head and an SKPM signal detector and controlling operation of a motor, AFM laser and SKPM signal laser.
In the above scheme, further, the partition plate and the transparent shell are sealed by arranging glass cement, and the joint of the partition plate and the sample is sealed by arranging a rubber sealing ring.
The method for high-throughput detection of the thermal spraying coating based on the device comprises the following steps:
step one: fixing a sample on a carrying moving platform through a clamp, and installing weights, partition plates and a transparent shell;
Step two: the control processing module controls all detection devices of the equipment to be opened, and ambient gas and medium solution are introduced into the closed detection area according to specific detection requirements, so as to provide a detection environment for micro-area electrochemical test; controlling the motor to rotate according to specific detection requirements to enable the FMM pressing head to apply load to the sample;
step three: controlling the object carrying moving platform to drive the sample to move, so that the sample moves with the AFM scanning probe, the FMM pressing head, the SKPM scanning probe and the electrochemical noise detecting head;
Step four: and summarizing all detection data into a computer of the control processing module for analysis by researchers, and controlling all detection devices of the closing equipment by the control processing module after detection is finished.
The device of the invention reasonably integrates the detection parts of the existing AFM, FMM, SKPM and EN four modules into one device, and can quickly, effectively and comprehensively understand the physical and chemical properties of a coating sample, such as: hardness, elastic modulus, film-based bonding strength, coating failure mode, matrix deformation scale, three-dimensional morphology of the coating, micro-area corrosion potential and current, in-situ lossless electrochemical noise and the like. The atomic fraction analysis image of the surface of the coating sample obtained by AFM can be used for calculating roughness, adhesion, friction and acting force between the material and the surface atoms of the material, and can also be used for analyzing thickness, step width, block diagram and granularity. The measured data are summarized into a computer, and the data required to be compared and analyzed are called through drawing software, so that one or more curve analysis graphs with multiple groups of data can be drawn quickly, diversified analysis is carried out, and the improvement process and theoretical research of the coating can be guided timely and comprehensively.
Drawings
FIG. 1 is a schematic diagram of a specific construction of a thermal spray coating high throughput inspection apparatus;
FIG. 2 is a schematic diagram of a sample of a coating to be tested mounted on a carrier moving platform;
FIG. 3 is a schematic view of a partition plate separating transparent housing areas.
Detailed Description
In order to describe the technical scheme of the present invention in more detail, the following description is further made with reference to specific embodiments.
As shown in fig. 1 and 2, a high-throughput detection device for a thermal spray coating of the present invention includes: the device comprises a base 1, a threaded rod 2, a load arm 3, a support rod 4, a servo motor 5, a micro cantilever 6, an AFM scanning probe 7, an FMM pressing head 8, a weight 9, an AFM laser 10, a top monitoring CCD 11, a carrying moving platform 12, a piezoelectric ceramic scanning tube 13, a sample clamp 14, a coating detection sample 15, a SKPM scanning probe 16, a SKPM signal laser 17, a partition plate 18, an electrochemical noise detector 19, a SKPM signal detector 20, a gas-liquid outlet 21, an AFM surface photoelectric detector 22, an electrochemical detection area monitoring CCD 23, an AFM and FMM monitoring CCD 24, a transparent housing cover 25, a transparent housing main body 26, a gas-liquid inlet 27, a control processing module 28 and a rubber ring 29.
The carrying moving platform 12 is connected to the base through a bolt, the piezoelectric ceramic scanning tube 13 is clamped between the coating detection sample 15 and the carrying moving platform 12, the coating detection sample 15 is fixed on the carrying moving platform 12 through a sample clamp 14, and the sample clamp 14 is fixed on the carrying moving platform 12 through a bolt;
The transparent shell main body 26 and the cover body 25 are fixedly connected into a whole to form a transparent shell, the transparent shell is detachably fixed on the base 1 to form a closed space, the partition plate 18 is detachably arranged in the transparent shell and used for separating the closed space into two parts isolated from each other, each part of space contains part of samples, one part of space is a closed detection area, the transparent shell of the other part of space is provided with a vertical slot, the vertical slot is a conventional detection area, and a gas-liquid inlet and a gas-liquid outlet are arranged in the closed detection area; the specific partition plate 18 can be formed by fixedly connecting a horizontal plate and a vertical plate as shown in fig. 1, the contact part of the bottom edge of the vertical plate and the sample is sealed by adopting a rubber ring (as shown in fig. 3), and the rest edges of the partition plate are sealed by adopting glass cement.
Within the normal detection zone:
The threaded rod 2 and the bearing are fixedly arranged on the base 1 (the threaded rod can be arranged in a conventional detection area or outside the transparent shell and can be arranged according to the actual space, the illustrated example is arranged outside the transparent shell), one end of the load arm 3 is in threaded connection with the threaded rod 2, the other end of the load arm extends into the transparent shell through the vertical slot, the supporting rod 4 can be arranged according to the requirement and can serve as a supporting point to provide support for the load arm 3, a weight rod is arranged at one end of the load arm 3 extending into the shell, an output shaft of the servo motor 5 is connected with the threaded rod 2, a load is applied to the load arm 3 by driving the threaded rod 2 to rotate, a certain preload is applied to the weight rod sleeved on the load arm 3 by the weight 9, and the FMM crimping head 8 is fixed at the end part of the load arm 3 through a bolt;
The micro-cantilever 6 can be connected to the transparent housing cover 25 by a hinge or other connection mode which keeps one rotational freedom, the AFM scanning probe 7 is fixed at the end part of the micro-cantilever 6, and the AFM laser 10, the AFM surface photoelectric detector 22 and the overlook monitoring CCD 11 are fixed on the transparent housing cover 25;
AFM and FMM monitoring CCD 24 may be mounted on the base 1 outside the transparent housing 26;
Within the enclosed detection zone:
The corresponding positions of the SKPM scanning probe 16, the SKPM signal laser 17 and the SKPM signal detector 20 are adjusted and fixed on the partition plate 18; an electrochemical noise detector head 19 is also secured to the partition plate 18; the electrochemical detection area monitoring CCD 23 can be arranged on the base 1 outside the transparent shell 26;
the sealed detection area formed by the partition plate 18 and the transparent shell is used for micro-area electrochemical detection means SKPM and EN in a solution environment, and can also be filled with environmental gas according to specific detection requirements.
The movement of the coating detection sample can be controlled through the carrying mobile platform 12, and the control processing module 28 is connected with the servo motor 5to control the rotation of the servo motor to apply load to the FMM pressing and marking head 8; during detection, the control processing module 28 receives data and images from the AFM scanning probe 7, the FMM pressing head 8, the overlook monitoring CCD 11, the piezoelectric ceramic scanning tube 13, the SKPM scanning probe 16, the SKPM signal laser 17, the EN detecting head 19, the SKPM signal detector 20, the AFM surface photoelectric detector 22, the electrochemical detection area monitoring CCD 23 and the AFM and FMM monitoring CCD 24, and gathers the data and images for analysis in a computer, and draws a multi-element data distribution diagram, which comprises: the hardness, the elastic modulus membrane-based bonding strength, the coating failure form, the matrix deformation scale, the three-dimensional appearance of the coating, the corrosion potential and current of the micro-area, the in-situ nondestructive electrochemical noise and other physical and chemical properties are analyzed and researched, and the test is completed.
The detection method adopting the device can be concretely as follows:
(1) The coating template is prepared by using thermal spraying technologies such as electric arc spraying, plasma spraying, supersonic flame spraying, explosion spraying, laser cladding and the like.
(2) The prepared coating template is placed in the center of the object stage horizontally with the coating surface facing upwards, the template is clamped by a sample clamp 14, and weights, partition plates and a transparent shell are arranged.
(3) The air-liquid inlet 27 can be used for connecting the air or the solution with certain humidity, temperature and pH value in the closed detection area formed by the partition plate 18 according to specific detection requirements, and the air-liquid outlet can be used for plugging or connecting other equipment;
(4) The servo motor is controlled to apply load to the FMM pressing head 8, the coating layer surface of the template is pressed into the FMM pressing head to obtain coating hardness and elastic modulus, the object carrying moving platform 12 is controlled to drive the coating sample to move linearly, and the FMM pressing head 8 slides on the coating layer surface to obtain film base bonding strength, a coating failure mode and a matrix deformation scale;
(5) Simultaneously, as the carrying moving platform drives the sample to move, the AFM scanning probe also slides on the surface of the coating, and the three-dimensional shape and structure of the coating are measured; the SKPM scanning probe 16 also moves linearly relative to the coating surface to measure the micro-scale corrosion potential and current.
(6) At the same time, EN probe 19 measures the in-situ non-destructive electrochemical noise of the coated sample.
(7) All test results are imported into a computer for processing, data analysis is carried out through software, and multivariate data distribution diagram analysis is established.
The device provided by the invention is used for detecting the spray coating, so that comprehensive performance data of the spray coating can be obtained at the same time, and diversified comparison analysis can be performed. The device has simple structure and easy control; the testing process is quick and convenient; the test result is comprehensive, accurate and easy to compare and analyze.
The foregoing description is only of a few embodiments of the present invention and all such equivalent changes and modifications as come within the meaning and range of equivalency of the structures, features and principles of the present invention are therefore intended to be embraced therein.
Claims (3)
1. The high-flux detection device for the thermal spraying coating is characterized by comprising a detection induction module, a part supporting module and a control processing module;
The part supporting module comprises a base, a transparent shell, a partition plate, a carrying moving platform and a sample clamp; the transparent shell is detachably fixed on the base to form a closed space, the carrier moving platform is arranged on the base, the sample is clamped and fixed on the carrier moving platform through the sample clamp, the partition plate is detachably arranged in the transparent shell and used for separating the closed space into two parts isolated from each other, each part of space contains part of sample, one part of space is a closed detection area, the other part of space is a conventional detection area, and a gas-liquid inlet and a gas-liquid outlet are arranged in the closed detection area;
The detection sensing module comprises AFM, FMM, SKPM and EN detection units, wherein an AFM and an FMM are arranged in a conventional detection area, and SKPM and EN are arranged in a closed detection area, and the detection sensing module comprises four partitions, namely an AFM detection unit, an FMM detection unit, a SKPM detection unit, an FMM detection unit, an EN detection unit, a SKPM detection unit, an EN detection unit:
The AFM detection unit comprises an AFM laser, a micro-cantilever, an AFM scanning probe and an AFM surface photoelectric detector, wherein the AFM laser and the AFM surface photoelectric detector are both fixed on the transparent shell, one end of the micro-cantilever is movably connected with the transparent shell, and the AFM scanning probe is fixed on the other end of the micro-cantilever;
The FMM detection unit comprises an FMM pressing head, weights, a load arm, a motor and a threaded rod; the threaded rod is vertically arranged, one end of the threaded rod is fixedly arranged on the base with the bearing, the other end of the threaded rod is connected with the motor output shaft, one end of the load arm of force is in threaded connection with the threaded rod, the upper part of the other end of the threaded rod is provided with a weight rod, the lower part of the load arm of force is fixedly provided with the FMM pressing head, and the weight is sleeved on the weight rod;
the SKPM detection unit comprises a SKPM scanning probe, SKPM signal laser and a SKPM signal detector, wherein the SKPM signal laser and the SKPM signal detector are fixed on the partition board, and the SKPM scanning probe is movably connected with the partition board;
The EN detection unit comprises an electrochemical noise detection head which is fixed on the partition plate;
In addition, the detection sensing module further comprises a piezoelectric ceramic scanning tube and a monitoring CCD, wherein the piezoelectric ceramic scanning tube is embedded in the surface of the carrying moving platform, and the piezoelectric ceramic scanning tube is completely covered after the sample is fixed; the monitoring CCD is used for monitoring the detection condition in real time;
The control processing module is realized based on a computer and is used for receiving data of an AFM scanning probe, an AFM surface photoelectric detector, an FMM pressing head, a monitoring CCD, a piezoelectric ceramic scanning tube, an SKPM scanning probe, an EN detecting head and an SKPM signal detector and controlling operation of a motor, AFM laser and SKPM signal laser.
2. The high-throughput detection device for thermal spraying coating according to claim 1, wherein glass cement is arranged between the partition plate and the transparent shell to realize sealing, and a rubber sealing ring is arranged at the joint of the partition plate and the sample to realize sealing.
3. A method for high throughput inspection of thermal spray coatings, characterized in that it is based on the device according to claim 1 or 2, the method comprising the steps of:
step one: fixing a sample on a carrying moving platform through a clamp, and installing weights, partition plates and a transparent shell;
Step two: the control processing module controls all detection devices of the equipment to be opened, and ambient gas and medium solution are introduced into the closed detection area according to specific detection requirements, so as to provide a detection environment for micro-area electrochemical test; controlling the motor to rotate according to specific detection requirements to enable the FMM pressing head to apply load to the sample;
step three: controlling the object carrying moving platform to drive the sample to move, so that the sample moves with the AFM scanning probe, the FMM pressing head, the SKPM scanning probe and the electrochemical noise detecting head;
Step four: and summarizing all detection data into a computer of the control processing module for analysis by researchers, and controlling all detection devices of the closing equipment by the control processing module after detection is finished.
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