Author(s)

J. Th. M. De Hosson & L. De Mol van Otterloo

Abstract

This paper deals with the wear properties of five different laser cladded Cobalt- base Stellite alloys. It is shown that fusing hardfacing powders onto a stainless steel substrate by means of a high power laser beam results in novel micro- structures. As such, wear testing of these coatings becomes essential to predict their behaviour in service. A comparison is made between the mechanical behaviour under abrasive, sliding and fretting wear conditions. 1. Introduction Cobalt-base alloys are used as wear-resistant materials for hardfacing cheap steel substrates. Of the different depositing techniques for metal powders such as plasma spray, tungsten inert gas, oxyacetylene flame and laser cladding the latter produces a dense coati

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