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| IrO2＋Ta2O5系钛基改性涂层阳极和失效特点 | |
| 引用本文： | 姚书典,沈嘉年,孙娟,王国平,李爱军,饶英相.IrO2＋Ta2O5系钛基改性涂层阳极和失效特点[J].稀有金属材料与工程,2006,35(12):1916-1919. |
| 作者姓名： | 姚书典 沈嘉年 孙娟 王国平 李爱军 饶英相 |
| 作者单位： | 1. 上海大学,上海,200072;北京冶金设备研究设计总院,北京,100029 2. 上海大学,上海,200072 3. 北京冶金设备研究设计总院,北京,100029 |
| 摘 要： | 研究了Ti／（IrO2＋Ta2O5）涂层阳极钛基表面不同改性条件下的表面形貌，截面扫描和界面元素分布，电解强化寿命和失效机理。结果表明，钛基体表面改性对涂层表面形貌没有根本性影响，表面改性的涂层阳极在槽电压-电解时间曲线上具有很长的平台期，显示出很好的强化寿命，平台期的主要失效特点在于涂层的电化学溶解，溶解从“龟裂”处始发，并且逐层进行。 |
| 关 键 词： | 钛阳极 失效机理 电解 二氧化铱 五氧化二钽 |
| 文章编号： | 1002-185X(2006)12-1916-04 |
| 收稿时间： | 2005-12-05 |
| 修稿时间： | 2005年12月5日 |
The Surface Modifications and Failure Mechanism for IrO2+Ta2O5 Coated Titanium Anodes |
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| Yao Shudian,Shen Jianian,Sun Juan,Wang Guoping,Li Aijun,Rao Yingxiang.The Surface Modifications and Failure Mechanism for IrO2+Ta2O5 Coated Titanium Anodes[J].Rare Metal Materials and Engineering,2006,35(12):1916-1919. | |
| Authors: | Yao Shudian Shen Jianian Sun Juan Wang Guoping Li Aijun Rao Yingxiang |
| Affiliation: | 1. Shanghai University, Shanghai 200072, China;2. Beijing Institute for Metallurgical Equipment Research, Beijing 100029, China |
| Abstract: | The surface morphology,elements distribution at he interface between coating and matrix,accelerated life time test and failure mechanism were discussed under the conditions of different sublayer surface modifications for Ti/(IrO2+Ta2O5)anodes such as special surface treatment(SST),metal Ta and Pt modification.The results show that Ti based surface modification has no basal influence on the surface morphology,the anodes have very long term accelerated life time at the flat stage with different surface modifications.Electrolysis dissolve of oxides is the main failure mechanism for the anode at the flat stage starting from island banks. |
| Keywords: | titanium anodes failure mechanism electrolysis iridium oxide(IrO2) tantalum pentoxide(Ta2O5) |
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