Effect of surfactant on the alumina dispersion and corrosion behavior of electroless Ni-P-Al2O3 composite coatings

被引：42
|
作者：
Liu, D. [1 ]
Yan, Y. [1 ]
Lee, K. [2 ]
Yu, J. [1 ]
机构：
[1] Harbin Inst Technol, Dept Mat Sci & Engn, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
[2] Johnson Elect Int Ltd, Shenzhen 518125, Peoples R China
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2009年 / 60卷 / 09期
关键词：
WEAR-RESISTANCE;
D O I：
10.1002/maco.200805170
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electroless Ni-P-Al2O3 composite coatings have been synthesized on mild steel shafts using surfactant cetyltrimethyle ammonium bromide (CTAB) as dispersant. The effects of the surfactant on the alumina dispersion, weight fraction in coatings, and corrosion resistance of the composite coatings under salt spray test were investigated. Results showed that alumina dispersion was improved, whereas weight fraction was decreased, with the increasing concentration of the dispersant CTAB. The corrosion resistance of the composite coatings was found to increase with the increase in CTAB concentration up to a certain optimum of 20 mg/L, beyond which a decreasing trend of corrosion resistance was observed under salt spray test. Compared with Ni-P coating, all the Ni-P-Al2O3 composite coatings showed improved corrosion-resistant properties.
引用
收藏
页码：690 / 694
页数：5
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