Effects of additives in electrolyte on characteristics of ceramic coatingsformed by microarc oxidation

Authors
Wang, YK Sheng, L Xiong, RZ Li, BS
Citation
Yk. Wang et al., Effects of additives in electrolyte on characteristics of ceramic coatingsformed by microarc oxidation, SURF ENG, 15(2), 1999, pp. 109-111
Citations number
3
Categorie Soggetti
Material Science & Engineering
Journal title
SURFACE ENGINEERING
ISSN journal
02670844 → ACNP
Volume
15
Issue
2
Year of publication
1999
Pages
109 - 111
Database
ISI
SICI code
0267-0844(1999)15:2<109:EOAIEO>2.0.ZU;2-L
Abstract
The effects of adding Na2WO4. 2H(2)O and SiC powder to the electrolyte on t he characteristics of ceramic coatings an Al based alloys formed by microar c oxidation were studied. The ceramic coating quality was improved by the t wo additives, but the addition of Na2WO4.2H(2)O was more effective, as it i mproved the formation of Al2O3 phase in the ceramic coating, increased the ratio of the internal dense region to the whole ceramic coating, optimised the ceramic coating phase structure, and improved its wear resistance. The SiC powder was able to enter into the ceramic coating and improve its wear resistance, at the same time increasing the friction coefficient of the coa ting.