VALENCE AND CORE PHOTOEMISSION OF THE FILMS FORMED ELECTROCHEMICALLY ON ALUMINUM IN NITRIC-ACID

被引：17

作者：

THOMAS, S ^{[1
]}

SHERWOOD, PMA ^{[1
]}

机构：

[1] KANSAS STATE UNIV AGR & APPL SCI,DEPT CHEM,WILLARD HALL,MANHATTAN,KS 66506

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 02期

关键词：

D O I：

10.1039/ft9938900263

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The chemical composition of the oxide films formed on aluminium after electrochemical oxidation in nitric acid solution has been examined by valence and core photoemission. Angle-resolved X-ray photoemission in the valence band indicated that the films in 0.5 mol dm-3 nitric acid consisted of a mixed composition at less positive potentials consisting of a gibbsite [Al(OH)3] surface with an inner layer of gamma-Al2O3. At more positive potentials the film consisted entirely of gamma-Al2O3. In more concentrated acid (5 mol dm -3) , especially for longer (60 min) exposure time, the films were essentially gamma-Al2O3.

引用

页码：263 / 266

页数：4

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