Copper passivity and its breakdown in sodium bicarbonate solutions: A scanning electron microscopy and X-ray photoelectron and Auger spectroscopy study

被引：9

作者：

Kaluzhina, S. A.

Sieber, I. V.

机构：

[1] Voronezh State Univ, Voronezh 394006, Russia

[2] Univ Erlangen Nurnberg, D-91058 Erlangen, Germany

来源：

RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2006年 / 42卷 / 12期

关键词：

copper; sodium bicarbonate; cyclic voltammetry; Auger spectroscopy; x-ray photoelectron spectroscopy; scanning electron microscopy;

D O I：

10.1134/S1023193506120135

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Effect of bicarbonate ions on the copper passivity and its local breakdown is studied by cyclic voltammetry, Auger spectroscopy, x-ray photoelectron spectroscopy, and scanning electron microscopy. Comparing data for solutions with various sodium bicarbonate concentrations shows copper to undergo pitting in 0.02 M NaHCO3, whereas it remains stably passive in 0.10 M NaHCO3. Independent studies suggest that carbonates play a protective role in stabilization of the oxide-hydroxide passive film on copper.

引用

页码：1352 / 1357

页数：6

共 18 条

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