CN105220216B - A kind of aluminum or aluminum alloy electrochemical polishing method - Google Patents
A kind of aluminum or aluminum alloy electrochemical polishing method Download PDFInfo
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- 238000005498 polishing Methods 0.000 title claims abstract description 79
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000005703 Trimethylamine hydrochloride Substances 0.000 claims abstract description 6
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 6
- SZYJELPVAFJOGJ-UHFFFAOYSA-N trimethylamine hydrochloride Chemical compound Cl.CN(C)C SZYJELPVAFJOGJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000012153 distilled water Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000004506 ultrasonic cleaning Methods 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 229910001250 2024 aluminium alloy Inorganic materials 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 229910001008 7075 aluminium alloy Inorganic materials 0.000 claims description 5
- 229910000676 Si alloy Inorganic materials 0.000 claims description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- -1 aluminum trichloride-trimethylammonium hydrochloride ion Chemical class 0.000 claims 1
- 239000002608 ionic liquid Substances 0.000 abstract description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 6
- POLXFNKVUMMMHL-UHFFFAOYSA-K n,n-dimethylmethanamine;trichloroalumane;hydrochloride Chemical compound [Al+3].Cl.[Cl-].[Cl-].[Cl-].CN(C)C POLXFNKVUMMMHL-UHFFFAOYSA-K 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 abstract description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- VGGLHLAESQEWCR-UHFFFAOYSA-N N-(hydroxymethyl)urea Chemical compound NC(=O)NCO VGGLHLAESQEWCR-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- HKIQCRMZWJSHBZ-UHFFFAOYSA-L dihydroxy(dioxo)chromium phosphoric acid sulfuric acid Chemical compound OP(O)(O)=O.OS(O)(=O)=O.O[Cr](O)(=O)=O HKIQCRMZWJSHBZ-UHFFFAOYSA-L 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
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- ing And Chemical Polishing (AREA)
Abstract
本发明公开了一种铝或铝合金电化学抛光方法，该方法的具体步骤如下：将无水三氯化铝和盐酸三甲胺在20‑40℃搅拌2‑6h即得三氯化铝‑盐酸三甲胺离子液体抛光液；将纯铝或铝合金及铜片置于丙酮溶液中超声清洗5‑10 min，然后用蒸馏水冲洗，最后用冷风吹干；用脉冲电源对纯铝或铝合金进行电化学抛光，纯铝或铝合金作为阳极，铜片作为阴极，脉冲频率1000‑2000 Hz，占空比1/4‑3/4，电流密度1.5‑3 A/dm2，操作温度为40‑60℃，抛光时间10‑30 min；将纯铝或铝合金取出立即放于无水乙醇中清洗，然后水洗，干燥。本发明所用抛光液为三氯化铝‑盐酸三甲胺离子液体，组分简单，不含磷酸、硫酸、铬酸等物质，绿色环保，而且来源广泛，价格低廉。The invention discloses an electrochemical polishing method for aluminum or aluminum alloy. The specific steps of the method are as follows: stir anhydrous aluminum trichloride and trimethylamine hydrochloride at 20-40°C for 2-6 hours to obtain aluminum trichloride-hydrochloric acid Trimethylamine ionic liquid polishing solution; put pure aluminum or aluminum alloy and copper sheet in acetone solution for ultrasonic cleaning for 5-10 min, then rinse with distilled water, and finally dry with cold wind; use pulse power to conduct electric shock on pure aluminum or aluminum alloy Chemical polishing, pure aluminum or aluminum alloy as anode, copper sheet as cathode, pulse frequency 1000‑2000 Hz, duty cycle 1/4‑3/4, current density 1.5‑3 A/dm 2 , operating temperature 40‑60 ℃, polishing time 10‑30 min; take out the pure aluminum or aluminum alloy and immediately clean it in absolute ethanol, then wash it with water and dry it. The polishing liquid used in the present invention is aluminum trichloride-trimethylamine hydrochloride ionic liquid, has simple components, does not contain phosphoric acid, sulfuric acid, chromic acid and other substances, is environmentally friendly, has wide sources, and is low in price.
Description
技术领域technical field
本发明涉及一种铝或铝合金电化学抛光方法。The invention relates to an electrochemical polishing method for aluminum or aluminum alloy.
背景技术Background technique
铝及其合金因具有质量轻、延展性好、价格低廉及无低温脆性等优点，在航空、航天、汽车、机械制造、船舶等领域有着广泛的应用。但铝及其合金却有耐磨性低，装饰性不佳等缺点。因此，在实际的生产应用中，必须对铝及其合金进行表面处理。表面抛光就是其中的一种处理方式。铝及其合金的表面抛光工艺主要包括机械抛光、化学抛光和电化学抛光。机械抛光是靠切削去掉表面凸起的部位从而得到平滑的表面，经加工后零件的整平性较好，但是机械抛光劳动强度较大，污染严重而且对形状复杂的材料难以抛光，光泽度保持时间较短。化学抛光包括酸性抛光和碱性抛光，抛光速率较快但不易控制，并且有气体溢出严重污染环境。电化学抛光（电解抛光）是以被抛工件为阳极，不溶性金属为阴极，两极同时浸入到电解槽中，通以电流而产生有选择性的阳极溶解，从而达到工件表面光亮度增大的效果。对于难以用机械抛光、化学抛光的铝件或光泽度要求高、形状复杂的铝工件可以用电化学抛光，而且电化学抛光的样品光泽度保持时间较长，防腐蚀性能较好。Aluminum and its alloys are widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and other fields due to their advantages of light weight, good ductility, low price and no low temperature brittleness. However, aluminum and its alloys have disadvantages such as low wear resistance and poor decoration. Therefore, in actual production applications, aluminum and its alloys must be surface treated. Surface polishing is one of these treatments. The surface polishing process of aluminum and its alloys mainly includes mechanical polishing, chemical polishing and electrochemical polishing. Mechanical polishing is to remove the protruding parts of the surface by cutting to obtain a smooth surface. After processing, the leveling of the parts is better, but the labor intensity of mechanical polishing is relatively large, the pollution is serious, and it is difficult to polish materials with complex shapes, and the glossiness is maintained. The time is shorter. Chemical polishing includes acid polishing and alkaline polishing. The polishing rate is fast but not easy to control, and there is gas overflow that seriously pollutes the environment. Electrochemical polishing (electrolytic polishing) uses the workpiece to be polished as the anode and the insoluble metal as the cathode. The two poles are immersed in the electrolytic cell at the same time, and an electric current is passed to produce selective anode dissolution, so as to achieve the effect of increasing the brightness of the workpiece surface. Electrochemical polishing can be used for aluminum parts that are difficult to polish mechanically or chemically or for aluminum workpieces with high gloss requirements and complex shapes, and the electrochemically polished samples have a longer gloss retention time and better corrosion resistance.
传统的电化学抛光液为磷酸—硫酸—铬酸型，这种抛光液虽然抛光效果较好，但含六价铬等致癌物质，环境污染严重。近年来，为了解决含铬抛光液带来的环保问题，人们进行了大量的探究和试验，用草酸、酒石酸、柠檬酸等来代替铬酸。发明专利CN 102312274A公布了一种无铬电化学抛光液（主要成分：磷酸40-60 g/L，硫酸10-15 g/L，甘油1-5 g/L，柠檬酸1-10 g/L，甲醚化羟甲基脲1-5 g/L）具有较好的抛光效果。但是这类抛光液的酸含量普遍较高，酸性强，易造成铝工件的腐蚀，同时在这类抛光液中抛光，一般需要在70-100℃下进行，操作温度较高，易产生酸雾，对生产环境有一定的影响。因此，寻找一种酸含量少、操作温度低、环境污染小的铝及其合金电化学抛光液具有重要的现实意义和广阔的应用前景。The traditional electrochemical polishing liquid is phosphoric acid-sulfuric acid-chromic acid type. Although this polishing liquid has good polishing effect, it contains carcinogens such as hexavalent chromium and causes serious environmental pollution. In recent years, in order to solve the environmental protection problems caused by chromium-containing polishing fluids, people have carried out a lot of research and experiments, using oxalic acid, tartaric acid, citric acid, etc. to replace chromic acid. Invention patent CN 102312274A discloses a chromium-free electrochemical polishing solution (main components: phosphoric acid 40-60 g/L, sulfuric acid 10-15 g/L, glycerin 1-5 g/L, citric acid 1-10 g/L , methyl etherified hydroxymethyl urea 1-5 g/L) has a good polishing effect. However, the acid content of this type of polishing liquid is generally high, and the acidity is strong, which is easy to cause corrosion of aluminum workpieces. At the same time, polishing in this type of polishing liquid generally needs to be carried out at 70-100 ° C, and the operating temperature is high, which is easy to generate acid mist , has a certain impact on the production environment. Therefore, searching for an electrochemical polishing solution for aluminum and its alloys with less acid content, lower operating temperature and less environmental pollution has important practical significance and broad application prospects.
发明内容Contents of the invention
本发明的目的在于提供一种铝或铝合金电化学抛光方法。The object of the present invention is to provide a method for electrochemical polishing of aluminum or aluminum alloy.
一种铝或铝合金电化学抛光方法，其特征在于该方法包括以下步骤：A method for electrochemical polishing of aluminum or aluminum alloy, characterized in that the method comprises the following steps:
1）抛光液的配制：将无水三氯化铝和盐酸三甲胺在20-40℃搅拌2-6h即得三氯化铝-盐酸三甲胺离子液体抛光液；1) Preparation of polishing liquid: Stir anhydrous aluminum trichloride and trimethylamine hydrochloride at 20-40°C for 2-6 hours to obtain aluminum trichloride-trimethylamine hydrochloride ionic liquid polishing liquid;
2）样品前处理：将纯铝或铝合金及铜片置于丙酮溶液中超声清洗5-10 min，然后用蒸馏水冲洗，最后用冷风吹干；2) Sample pretreatment: put pure aluminum or aluminum alloy and copper sheet in acetone solution for ultrasonic cleaning for 5-10 minutes, then rinse with distilled water, and finally dry with cold wind;
3）电化学抛光：用脉冲电源对纯铝或铝合金进行电化学抛光，纯铝或铝合金作为阳极，铜片作为阴极，脉冲频率1000-2000 Hz，占空比1/4-3/4，电流密度1.5-3 A/dm2，操作温度为40-60℃，抛光时间10-30 min；3) Electrochemical polishing: Electrochemical polishing of pure aluminum or aluminum alloy with pulse power supply, pure aluminum or aluminum alloy as anode, copper sheet as cathode, pulse frequency 1000-2000 Hz, duty ratio 1/4-3/4 , the current density is 1.5-3 A/dm 2 , the operating temperature is 40-60°C, and the polishing time is 10-30 min;
4）样品清洗：将纯铝或铝合金取出立即放于无水乙醇中清洗，然后水洗，干燥。4) Sample cleaning: Take out the pure aluminum or aluminum alloy and immediately wash it in absolute ethanol, then wash it with water and dry it.
所述无水三氯化铝与盐酸三甲胺的摩尔比为1.5:1-2:1。The molar ratio of the anhydrous aluminum trichloride to trimethylamine hydrochloride is 1.5:1-2:1.
所述三氯化铝-盐酸三甲胺离子液体抛光液呈现棕黄色，密度为1.3683-1.4947g/L。The aluminum trichloride-trimethylamine hydrochloride ionic liquid polishing solution is brownish yellow, and has a density of 1.3683-1.4947 g/L.
所述铝合金为2024铝合金、7075铝合金、A319铝合金或铸造铝硅合金。The aluminum alloy is 2024 aluminum alloy, 7075 aluminum alloy, A319 aluminum alloy or cast aluminum-silicon alloy.
本发明与现有技术相比具有以下优点：Compared with the prior art, the present invention has the following advantages:
1）本发明所述抛光液为三氯化铝-盐酸三甲胺离子液体，组分简单，不含磷酸、硫酸、铬酸等物质，绿色环保，而且来源广泛，价格低廉。1) The polishing liquid described in the present invention is aluminum trichloride-trimethylamine hydrochloride ionic liquid, which has simple components, does not contain phosphoric acid, sulfuric acid, chromic acid and other substances, is environmentally friendly, has a wide range of sources, and is cheap.
2）本发明所述抛光液在使用时操作温度低，在室温或稍高于室温的条件下即可进行，能量消耗低，抛光液损耗小。2) The polishing liquid of the present invention has a low operating temperature when used, and can be carried out at room temperature or slightly higher than room temperature, with low energy consumption and small loss of polishing liquid.
3）本发明所述抛光液适用范围广泛，不仅可以对纯铝和常规铝合金进行电化学抛光，而且还可以对铸造铝硅合金进行抛光。3) The polishing liquid of the present invention has a wide range of applications, not only for electrochemical polishing of pure aluminum and conventional aluminum alloys, but also for polishing of cast aluminum-silicon alloys.
4）通过本发明所述抛光液抛光所得到的样品抛光效果好，光泽度较高且保持时间较长。4) The sample obtained by polishing with the polishing liquid of the present invention has good polishing effect, high gloss and long retention time.
附图说明Description of drawings
图1为铝及铝合金电化学抛光前后对比照片，其中（a）为纯铝，（b）为2024铝合金，（c）为7075铝合金，（d）为A319铝合金，黑线下方是电化学抛光后的效果，黑线上方没经过抛光。Figure 1 is a comparison photo of aluminum and aluminum alloy before and after electrochemical polishing, in which (a) is pure aluminum, (b) is 2024 aluminum alloy, (c) is 7075 aluminum alloy, (d) is A319 aluminum alloy, below the black line is The effect after electrochemical polishing, without polishing above the black line.
具体实施方式detailed description
实施例1Example 1
离子液体中电化学抛光纯铝的方法，具体条件和实施步骤如下：The method for electrochemically polishing pure aluminum in ionic liquid, specific conditions and implementation steps are as follows:
1）抛光液的配制：称取209.25 g无水三氯化铝，75.0 g盐酸三甲胺，在20℃搅拌2h后即得到所需的离子液体抛光液；1) Preparation of polishing solution: Weigh 209.25 g of anhydrous aluminum trichloride and 75.0 g of trimethylamine hydrochloride, and stir at 20°C for 2 hours to obtain the required ionic liquid polishing solution;
2）样品前处理：将纯铝(20mm×14mm×8mm)及铜片（33 mm×8mm×1mm）置于丙酮溶液中超声清洗5~10 min，然后用蒸馏水冲洗，最后用冷风吹干；2) Sample pretreatment: put pure aluminum (20mm×14mm×8mm) and copper sheet (33 mm×8mm×1mm) in acetone solution for ultrasonic cleaning for 5-10 minutes, then rinse with distilled water, and finally dry with cold air;
3）电化学抛光：用脉冲电源对纯铝进行电化学抛光，纯铝作为阳极，铜片作为阴极，脉冲频率1000 Hz，占空比1/2，电流密度为2 A/dm2，操作温度为40℃，抛光时间20 min；3) Electrochemical polishing: electrochemical polishing of pure aluminum with pulse power supply, pure aluminum as anode, copper sheet as cathode, pulse frequency 1000 Hz, duty ratio 1/2, current density 2 A/dm 2 , operating temperature 40°C, polishing time 20 min;
4）样品清洗：将纯铝取出立即放于无水乙醇中清洗，然后水洗，干燥。4) Sample cleaning: Take out the pure aluminum and immediately wash it in absolute ethanol, then wash it with water and dry it.
抛光效果见图1（a），从图1（a）中可以看出经电化学抛光后得到的纯铝表面光亮呈现镜面。The polishing effect is shown in Figure 1(a). From Figure 1(a), it can be seen that the surface of pure aluminum obtained after electrochemical polishing is bright and presents a mirror surface.
实施例2Example 2
离子液体中电化学抛光2024铝合金的方法，具体条件和实施步骤如下：The method for electrochemically polishing 2024 aluminum alloy in ionic liquid, specific conditions and implementation steps are as follows:
1）离子液体的配制：称取139.5 g无水三氯化铝，50.0 g盐酸三甲胺放入250 ml烧瓶中，在20℃左右搅拌2h后即得到所需的离子液体抛光液；1) Preparation of ionic liquid: Weigh 139.5 g of anhydrous aluminum trichloride and 50.0 g of trimethylamine hydrochloride into a 250 ml flask, and stir at about 20°C for 2 hours to obtain the required ionic liquid polishing solution;
2）样品前处理：将2024铝合金（24 mm×12mm×5mm）及铜片（33 mm×8mm×1mm）置于丙酮溶液中超声清洗5~10 min，然后用蒸馏水冲洗，最后用冷风吹干；2) Sample pretreatment: put 2024 aluminum alloy (24 mm×12mm×5mm) and copper sheet (33 mm×8mm×1mm) in acetone solution for ultrasonic cleaning for 5-10 min, then rinse with distilled water, and finally blow with cold air Dry;
3）电化学抛光：用脉冲电源进行电化学抛光，2024铝合金作为阳极，铜片作为阴极，脉冲频率1000 Hz，占空比1/2，电流密度为2 A/dm2，操作温度为40℃，抛光时间为20min；3) Electrochemical polishing: electrochemical polishing with pulse power supply, 2024 aluminum alloy as anode, copper sheet as cathode, pulse frequency 1000 Hz, duty ratio 1/2, current density 2 A/dm 2 , operating temperature 40 ℃, the polishing time is 20min;
4）样品清洗：将2024铝合金取出立即放于无水乙醇中清洗，然后水洗，干燥。4) Sample cleaning: Take out the 2024 aluminum alloy and immediately wash it in absolute ethanol, then wash it with water and dry it.
抛光效果见图1（b），从图1（b）中可以看出经电化学抛光后得到的2024合金表面光亮。The polishing effect is shown in Figure 1(b). From Figure 1(b), it can be seen that the surface of the 2024 alloy obtained after electrochemical polishing is bright.
实施例3Example 3
离子液体中电化学抛光7075铝合金的方法，具体条件和实施步骤如下：The method for electrochemically polishing 7075 aluminum alloy in ionic liquid, specific conditions and implementation steps are as follows:
1）离子液体的配制：同实施例1；1) Preparation of ionic liquid: same as Example 1;
2）样品前处理：7075铝合金和铜片的处理方式同实施例1；2) Sample pretreatment: the treatment method of 7075 aluminum alloy and copper sheet is the same as that of Example 1;
3）电化学抛光：同实施例1；3) Electrochemical polishing: same as Example 1;
4）样品清洗：同实施例1。4) Sample cleaning: same as in Example 1.
抛光效果见图1（c），从图1（c）中可以看出经电化学抛光后得到的7075合金表面光亮度大大提升。The polishing effect is shown in Figure 1(c). From Figure 1(c), it can be seen that the surface brightness of the 7075 alloy obtained after electrochemical polishing is greatly improved.
实施例4Example 4
离子液体中电化学抛光A319铝合金的方法，具体条件和实施步骤如下：The method for electrochemically polishing A319 aluminum alloy in ionic liquid, specific conditions and implementation steps are as follows:
1）离子液体的配制：同实施例1；1) Preparation of ionic liquid: same as Example 1;
2）样品前处理：A319铝合金和铜片的处理方式同实施例1；2) Sample pretreatment: A319 aluminum alloy and copper sheet are treated in the same way as in Example 1;
3）电化学抛光：同实施例1；3) Electrochemical polishing: same as Example 1;
4）样品清洗：同实施例1。4) Sample cleaning: same as in Example 1.
抛光效果见图1（d），从图1（d）中可以看出经电化学抛光后得到的A319合金表面的亮度有很大的提升。The polishing effect is shown in Figure 1(d). From Figure 1(d), it can be seen that the surface brightness of the A319 alloy obtained after electrochemical polishing has been greatly improved.
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| CN110886010B (en) * | 2019-12-05 | 2020-12-11 | 哈尔滨焊接研究院有限公司 | Electrolytic polishing solution for preparing aluminum alloy metallographic specimen and tissue display method thereof |
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