| Influence of oxidant KMnO4 on film—forming process of rare earth metal conversion coating on LY12 aluminum alloy |
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| 引用本文： | TianzhuGao JiuqingLi. Influence of oxidant KMnO4 on film—forming process of rare earth metal conversion coating on LY12 aluminum alloy[J]. 北京科技大学学报(英文版), 2002, 9(3): 216-220 |
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| 作者姓名： | TianzhuGao JiuqingLi |
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| 作者单位： | [1]MaterialsScienceandEngineeringSchool,UniversityofScienceandTechnologyBeijing,Beijing100083,China [2]MaterialsScienceandEngineeringSchool,UniversityofScienceandTechnologyBeijing,Beijin |
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| 摘 要： | A Cu/Al galvanic couple was established to study the influence of the oxidant KMnO4 on the film-forming process of rare earth metal(REM) conversion coating on LY12 aluminum alloy.It is found that the galvanic couple simulative experiment accords with the actual immersion.and it can be substantially used to simulate the behavior of LY12 aluminum alloy inthe film-forming process.It is showed that the formation of the coating is quickened in CeCl3 Solution containing KMnO4 compared with that not containing KMnO4.XPS results reveal that the coating formed on cathode is composed of oxide or hydroxide of Ce and Mn,So the mechanism of formatiopn of REM conversion coating changes when KMnO4 is added.
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| 关 键 词： | 铝合金 稀土金属 涂层 |
Influence of oxidant KMnO4 on film-forming process of rare earth metal conversion coating on LY12 aluminum alloy |
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| Tianzhu Gao,Jiuqing Li. Influence of oxidant KMnO4 on film-forming process of rare earth metal conversion coating on LY12 aluminum alloy[J]. Journal of University of Science and Technology Beijing, 2002, 9(3): 216-220 |
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| Authors: | Tianzhu Gao Jiuqing Li |
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| Affiliation: | Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | A Cu/Al galvanic couple was established to study the influence of the oxidant KMnO4 on the film-forming process of rare earth metal (REM) conversion coating on LY12 aluminum alloy. It is found that the galvanic couple simulative experiment accords with the actual immersion, and it can be substantially used to simulate the behavior of LY12 aluminum alloy in the film-forming process. It is showed that the formation of the coating is quickened in CeCl3 solution containing KMnO4 compared with that not containing KMnO4. XPS results reveal that the coating formed on cathode is composed of oxide or hydroxide of Ce and Mn, so the mechanism of formation of REM conversion coating changes when KMnO4 is added. |
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| Keywords: | copper containing aluminum alloy rare earth metal conversion coating galvanic couple simulative experiment |
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