| 复合镀电触点耐电蚀机理的研究 |
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| 引用本文： | 姚素薇,郭鹤桐,曹立礼,宋惠敏.复合镀电触点耐电蚀机理的研究[J].天津大学学报(自然科学与工程技术版),1991(3). |
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| 作者姓名： | 姚素薇 郭鹤桐 曹立礼 宋惠敏 |
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| 作者单位： | 天津大学
(姚素薇，郭鹤桐)，清华大学
(曹立礼)，天津大学(宋惠敏) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用X射线光电子谱对Ag-La_2O_3复合镀层进行了分析。结果表明,微粒在镀层中不是简单的机械夹杂,而是在接触界面处与周围的Ag原子发生化学作用,形成Ag、La、O非计量界面扩散反应层。文中讨论了荷负电徽粒的复合电沉积机理,以“微粒效应”和“电蚀中心”的观点解释Ag-La_2O_3复合镀电触点耐电蚀现象。
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| 关 键 词： | Ag-La_2O_3 微粒效应 复合电沉积 电蚀中心 |
STUDY ON ANTI-ELECTROEROSION MECHANISM OF THE COMPOSITE COATING FOR ELECTRO-CONTACT |
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| Yao Suwei Guo Hetong.STUDY ON ANTI-ELECTROEROSION MECHANISM OF THE COMPOSITE COATING FOR ELECTRO-CONTACT[J].Journal of Tianjin University(Science and Technology),1991(3). |
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| Authors: | Yao Suwei Guo Hetong |
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| Institution: | Yao Suwei Guo Hetong (Tianjin University) Cao Lili (Qinghua University) Song Huimin (Tianjin University) |
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| Abstract: | In this paper, the composite coating was analysed by X-ray photoelectron spectroscopy (XPS) in order to study the essential action of La_2O_3 particles in Ag-deposit. The results showed that the particles in the coating did not simply contact with silver mechanically, but a chemical reaction between them occurred. The nonstoichiometric diffusion layer of Ag, La, O was formed, which is called perticle-effect. The composite plating mechanism of the negatively charged particles was discussed, and the electroerosion resistance of Ag-La_2O_3 composite coating for electro-contacts was explained by the particle-effect and electroerosion centres. |
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| Keywords: | Ag-La_2O_3 particle-effect electroerosion centre composite coating |
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