Local Burning Phenomena in Sulfuric Acid Anodizing: Analysis of Porous Anodic Alumina Layers on AA1050

被引：23
作者：
Gaston-Garcia, B. [1 ]
Garcia-Lecina, E. [1 ]
Diez, J. A. [1 ]
Belenguer, M. [2 ]
Mueller, C. [2 ]
机构：
[1] CIDETEC IK4, Surface Finishing Dept, E-20009 San Sebastian, Spain
[2] Univ Barcelona, Fac Quim, Dept Quim Fis, ELECTRODEP, E-08028 Barcelona, Spain
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2010年 / 13卷 / 11期
关键词：
APPLIED ELECTRODE; FABRICATION; ANODIZATION; FILMS;
D O I：
10.1149/1.3478482
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The development of local burning phenomena during galvanostatic anodizing of the AA1050 aluminum alloy in a sulfuric acid electrolyte was analyzed. The oxide hillocks formed during burning were controlled and characterized at different anodizing times. Field-emission-scanning electron microscope images, electron probe microanalysis, energy-dispersive X-ray spectroscopy analysis, and microhardness measurements showed that the porous anodic alumina (PAA) that formed the hillocks had a different structure, composition, and mechanical behavior than the standard PAA. Moreover; Fe and Si were detected at the very top parts of the hillocks, suggesting a connection between intermetallic particles and burning initiation. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3478482] All rights reserved.
引用
收藏
页码：C33 / C35
页数：3
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