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IrO2+Ta2O5系鈦基改性涂層陽極和失效特點
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TG146.23 TG154.5

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上海教育委員會青年基金(203170)


The Surface Modifications and Failure Mechanism for IrO2+Ta2O5 Coated Titanium Anodes
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    摘要:

    研究了Ti/(IrO2+Ta2O5)涂層陽極鈦基表面不同改性條件下的表面形貌,截面掃描和界面元素分布,電解強化壽命和失效機理。結(jié)果表明,鈦基體表面改性對涂層表面形貌沒有根本性影響,表面改性的涂層陽極在槽電壓-電解時間曲線上具有很長的平臺期,顯示出很好的強化壽命,平臺期的主要失效特點在于涂層的電化學溶解,溶解從“龜裂”處始發(fā),并且逐層進行。

    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.

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姚書典 沈嘉年 孫娟 王國平 李愛軍 饒英相. IrO2+Ta2O5系鈦基改性涂層陽極和失效特點[J].稀有金屬材料與工程,2006,35(12):1916~1919.[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.]
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  • 收稿日期:2005-12-05
  • 最后修改日期:2005-12-05
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