刘坤坤,孙伶俐,何声馨,张二亮.316 不锈钢电解抛光最佳参数试验研究[J].表面技术,2018,47(8):288-294. LIU Kun-kun,SUN Ling-li,HO Hsin-shen,ZHANG Er-liang.Optimal Parameters of Electro-polishing for 316 Stainless Steel[J].Surface Technology,2018,47(8):288-294 |
316 不锈钢电解抛光最佳参数试验研究 |
Optimal Parameters of Electro-polishing for 316 Stainless Steel |
投稿时间:2018-03-24 修订日期:2018-08-20 |
DOI:10.16490/j.cnki.issn.1001-3660.2018.08.040 |
中文关键词: 316 不锈钢 电解抛光 EBSD 制样 最佳参数 |
英文关键词:316 stainless steel electro-polishing EBSD sample preparation optimal parameters |
基金项目:河南省高等学校重点科研项目(15A460030);国家自然科学基金项目(51650110502) |
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Author | Institution |
LIU Kun-kun | School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China |
SUN Ling-li | School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China |
HO Hsin-shen | School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China |
ZHANG Er-liang | School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China |
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中文摘要: |
目的 得到合适的电解抛光参数,解决 316 不锈钢电子背散射衍射试样高效制备问题,为高精度电镜分析奠定基础。方法 原材料在使用标准金相技术进行机械抛光后,再进行电解抛光。电解抛光试验以直流稳压电源供电,选择浓硫酸与浓磷酸的混合液作为电解液,在不同的电压、电流、温度等参数组合下进行电解抛光试验。试验后,在光学显微镜和扫描电子显微镜下观察样品抛光面并拍摄图像。结果 在确定最佳电压试验中,电压为 5~10 V 时,被抛光面出现腐蚀;电压为 10~15 V 时,出现较多条纹;电压为 15~20 V 时,条纹减少。在确定最佳电流试验中,电流为 2~3 A 时,被抛光面出现腐蚀;电流为 3~4 A 时,出现少量条纹;电流为 4~5 A 时,发生过腐蚀。确定最佳温度试验中,温度为 40~50 ℃时,出现少量条纹;温度为 50~60 ℃时,出现微量条纹;温度为 60~70 ℃时,无条纹出现。结论 电解抛光面的抛光质量很大程度上依赖于电解抛光参数。相对于电压参数和温度参数,电流参数对抛光面抛光质量的影响最大。最佳电解抛光参数组合为:电压 15~20 V,电流 3~4 A,温度 60~70 ℃。 |
英文摘要: |
The work aims to solve the problem in the efficient preparation of electro back-scattered diffraction sample, lay foundation for high precision electron microscope analysis and obtain the appropriate electro-polishing parameters. The raw steel material was electro-polished after being mechanically polished by standard metallographic techniques. The DC constant power supply was used in the electro-polishing test and the mixture of phosphoric acid and sulfuric acid acting was adopted as the electrolyte. The electro-polishing test was conducted under different combination of parameters, including voltage, current and temperature. Then the polished surfaces of samples after the test were examined and shot by optical microscopy and scanning electron microscope. In the test to determine the optimal voltage, electro-polished surface was corroded at the voltage of 5~10 V. More striations were found at the voltage of 10~15 V. A little striations were found at the voltage of 15~20 V. In the test to determine the optimal current, electro-polished surface was corroded at the current of 2~3 A. A little striations were found at the current of 3~4 A. Over corroded surface was found at the current of 4~5 A. In the test to determine the optimal temperature, a little striations were found at the temperature of 40~50 ℃. Little striations were found at the temperature of 50~60 ℃. No striations were found at the temperature of 60~70 ℃. The polishing quality of electro-polished surfaces highly depends on the electro-polishing parameters. Compared to the voltage and temperature, the current is the parameter with the most influence on the electro-polished surface. From the analysis, the optimal parameter conditions are the following: the voltage of 15~20 V, the current of 3~4 A and the temperature of 60~70 ℃. |
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