| 电机叶轮组合镀层斑点原因分析 |
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| 引用本文： | 李博,胡伟叶. 电机叶轮组合镀层斑点原因分析[J]. 电镀与环保, 2011, 31(5): 10-13 |
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| 作者姓名： | 李博 胡伟叶 |
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| 作者单位： | 1. 南京航空航天大学材料科学与技术学院,江苏南京211100; 中国航天科工集团南京晨光厂工艺研究所,江苏南京210012
2. 中国航天科工集团南京晨光厂工艺研究所,江苏南京,210012 |
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| 摘 要： | 通过体视显微镜、光学显微镜、扫描电镜及X射线能谱仪对ST13电机叶轮叶片表面进行分析检测,叶片表面为铜/镍/铬组合镀层.分析结果表明:叶片表面的斑点、锈蚀、起皮等缺陷是因氯离子渗入镀层导致的基体点蚀失效,叶片迎风面所受到的高压气流、镀层与钢铁基体的电位差等因素促进了腐蚀反应过程.叶片总的镀层厚度不足5 μm,且作为中间...
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| 关 键 词： | 镀层 点蚀 氯离子 失效分析 |
Cause Analysis for Specks on Compound Coating of Motor Impeller Blades |
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| LI Bo,HU Wei-ye. Cause Analysis for Specks on Compound Coating of Motor Impeller Blades[J]. Electroplating & Pollution Control, 2011, 31(5): 10-13 |
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| Authors: | LI Bo HU Wei-ye |
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| Affiliation: | LI Bo1,2,HU Wei-ye2(1.College of Materials Science and Technology,Nanjing University ofAeronautics and Astronautics,Nanjing 211100,China,2.Technology ResearchInstitute of Nanjing Chenguang Corporation,CASTC,Nanjing 210012,China.) |
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| Abstract: | Stereomicroscope,optical microscope,scanning electron microscopy and energy dispersive X-ray inspection were used to analyze and test the surface of ST13 motor impeller blades,on which a copper + nickel + chromium combination of compound coating is plated.The results show that the surface of the blades have specks,rusty corrosions,peeling and other defects caused by chloride ions penetrating into the matrix leading to pitting failure.The factors of high pressure air applied on the windward side of the blade... |
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| Keywords: | coating pitting corrosion chloride ion failure analysis |
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