Adhesion evaluation of plasma sprayed coatings using piecewise linear regression analysis

Authors
Godoy, C Batista, JCA
Citation
C. Godoy et Jca. Batista, Adhesion evaluation of plasma sprayed coatings using piecewise linear regression analysis, J THERM SPR, 8(4), 1999, pp. 531-536
Citations number
14
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF THERMAL SPRAY TECHNOLOGY
ISSN journal
10599630 → ACNP
Volume
8
Issue
4
Year of publication
1999
Pages
531 - 536
Database
ISI
SICI code
1059-9630(199912)8:4<531:AEOPSC>2.0.ZU;2-B
Abstract
The critical load for adhesion of 75% WC-Co + 25% Ni alloy plasma sprayed c oatings was evaluated by an interfacial indentation test. A statistical ana lysis-piecewise linear regression-was used to estimate the critical load Pc and its confidence interval. It was determined that a post heat treatment increases the practical adhesion load of plasma sprayed coatings. This incr ease was attributed to interdiffusion mechanisms verified at the interface between the coating and substrate.