ANODIZATION OF NIOBIUM IN SULFURIC-ACID MEDIA

被引：31
|
作者：
GOMES, MAB [1 ]
ONOFRE, S [1 ]
JUANTO, S [1 ]
BULHOES, LOD [1 ]
机构：
[1] UNIV FED SAO CARLOS,DEPT QUIM,INTERDISCIPLINAR ELECTROQUIM & CERAM LAB,CAIXA POSTAL 676,BR-13560 SAO CARLOS,SP,BRAZIL
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 1991年 / 21卷 / 11期
关键词：
D O I：
10.1007/BF01077589
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Niobium oxide films of different thicknesses can be produced on niobium electrodes by anodic polarization. The films produced by a galvanostatic method show different interference colours following the expected theoretical succession of colours. An electrical breakdown was observed which showed a significant dependence of the electrolyte concentration and current density. The relationship between the colour and the current density during the anodization of niobium samples are reported for sulphuric acid solutions. In addition the method for preliminary surface preparation of the niobium electrode is described.
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页码：1023 / 1026
页数：4
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