Anodic oxide film formation on antimony and its currentless dissolution in sulphuric acid containing some monocarboxylic acids

被引：10

作者：

Mogoda, AS ^{[1
]}

Abd El-Haleem, TM ^{[1
]}

机构：

[1] Cairo Univ, Fac Sci, Dept Chem, Giza, Egypt

来源：

THIN SOLID FILMS | 2003年 / 441卷 / 1-2期

关键词：

antimony; anodic polarization; monocarboxylic acids; dissolution of oxide film; impedance;

D O I：

10.1016/S0040-6090(03)00876-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Galvanostatic anodization of antimony was investigated in 0.05 M sulphuric acid containing some monocarboxylic acids such as formic, acetic and propionic acid. The results show that the formation rate of the anodic oxide film on antimony is a function of the monocarboxylic acid concentration and increases in the order formic < acetic < propionic acid. The dissolution mechanism of the anodic oxide film in sulphuric acid containing the above mentioned monocarboxylic acids is a first order reaction. The dissolution rate of the oxide film decreases with increase of the concentration and chain length of the monocarboxylic acid and increases with increase of the dissolution temperature. The activation energy for the dissolution of the oxide film is found to be 27 +/- 2 kJ mol(-1). (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：6 / 12

页数：7

共 33 条

[1] DISSOLUTION BEHAVIOR OF ANODIC OXIDE-FILMS FORMED ON ANTIMONY IN FLUORIDE SOLUTIONS AS REVEALED FROM IMPEDANCE AND POTENTIAL MEASUREMENTS [J].