Author(s)

E. Fernandez, J.M. Cuetos, R. Vijande, H. Montes, A. Rincon & M.C. Perez

Abstract

Nd-YAG laser surface treatment of coatings. Wear tests in tribometer LWF-1 E. Fernandez," J.M. Cuetos," R. Vijande/ H. Montes," A. Rincon,6 M.C. Perez^ "E.T.S. Ingenieros Industrials, Carretera de Castiello, s/n. 33204 Gijon, University of Oviedo, Spain ABSTRACT Superficial laser treatment allows tribological behaviour of certain materials to be improved. This paper presents the results obtained using Nd-YAG laser on a plasma sprayed coating of Cr2O3 fixing the optimal parameters of such treatment. On the other hand, wear resistance tests performed using an LWF-1 machine with pairs steel-ceramic coating, show, as a rule, a better performance of both steel and ceramic coating under dry friction and abrasive condition, mainly due to the change caused by laser treatment on the coating micros true ture. INTRODUCTION Plasma spraying is a technique that allows high quality coatings to be obtained using materials with a high melting point, as it is the case for cer

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