Wet slurry abrasion tests of ceramic coatings deposited by water-stabilized plasma spraying

摘要

Wear resistance of plasma sprayed ceramic and metal coatings was studied. The gray alumina, chromia and metal coatings were produced by water-stabilized plasma torch WSP and the influence of the deposition method on the wear properties of the coatings was evaluated Two methods for determination of wear resistance of WSP sprayed coatings were combined: wet slurry abrasion test and scratch test. Scanning electron microscope observations of the damaged samples were used to determine the main wear mechanisms and to justify superior wear resistance of chromia coating.