Determination of residual stress distribution from in situ curvature measurements for thermally sprayed WC/Co coatings

Abstract

An in situ monitoring of curvature of the specimen during spraying using a high speed video system was implemented to determine stresses in thermally sprayed WC/Co coatings. Influences of different spray-ing techniques (atmospheric plasma spraying and high-velocity oxygen fuel) and cooling levels were con-sidered using a mathematical model. Results show that temperature history of a part is of paramount importance in stress generation and distribution.