An investigation of the corrosion behavior of Al2O3-based ceramic composite coatings in dilute HCl solution

Authors
Yan, DR He, JN Li, XZ Liu, YG Zhang, JX Ding, HL
Citation
Dr. Yan et al., An investigation of the corrosion behavior of Al2O3-based ceramic composite coatings in dilute HCl solution, SURF COAT, 141(1), 2001, pp. 1-6
Citations number
5
Categorie Soggetti
Material Science & Engineering
Journal title
SURFACE & COATINGS TECHNOLOGY
ISSN journal
02578972 → ACNP
Volume
141
Issue
1
Year of publication
2001
Pages
1 - 6
Database
ISI
SICI code
0257-8972(20010604)141:1<1:AIOTCB>2.0.ZU;2-1
Abstract
In this paper, the corrosion behavior of Al2O3-SiO2, Al2O3-TiO2 and Al2O3-S iO2-TiO2 ceramic composite coatings in boiling 1 N HCl solution is investig ated. It is shown that the addition of 3% SiO2 to the base spraying powder of Al2O3 increases porosity in the coatings and causes deterioration in the ir corrosion resistance. Adding 13% TiO2 to Al2O3 improves the anti-corrosi on property of the ceramic coating due to a reduction in porosity. The conn ected porosity in the Al2O3-based ceramic composite coatings rises with the open porosity and is independent of the density of the coating. (C) 2001 E lsevier Science B.V. All rights reserved.