Tribological properties of plasma sprayed alumina-titania coatings: role and control of the microstructure

Citation
B. Normand et al., Tribological properties of plasma sprayed alumina-titania coatings: role and control of the microstructure, SURF COAT, 123(2-3), 2000, pp. 278-287
Citations number
18
Categorie Soggetti
Material Science & Engineering
Journal title
SURFACE & COATINGS TECHNOLOGY
ISSN journal
02578972 → ACNP
Volume
123
Issue
2-3
Year of publication
2000
Pages
278 - 287
Database
ISI
SICI code
0257-8972(20000124)123:2-3<278:TPOPSA>2.0.ZU;2-7
Abstract
Plasma sprayed ceramic coatings (Al2O3 + 40% TiO2) were studied using two d ifferent kinds of powder: one spray dried and one crushed and blended. The cooling rate during the thermal spray process was also considered, with the use of cryogenic cooling. The friction behavior and the wear resistance of the corresponding coatings were then evaluated in dry sliding conditions i n two different configurations: block-on-ring (Amsler) and ball-on-disc. Th e microstructure of a coating is conditioned by the morphology of the powde r and the cooling rate which modify the residual stresses in the coating. ( C) 2000 Elsevier Science S.A. All rights reserved.