Author(s)

J.Th.M. De Hosson

Abstract

A novel process was developed to firmly coat Al- based and Fe-based alloys by means of CCX laser processing. In this approach a mixture of SiO^ and Al powder was used to inject in the laser melted surface of aluminium. A reaction product a-ALjOj layer of a thickness of 100 |im was created which was well bonded to the aluminium surface. A similar result was obtained with Cr% O, on Fe-base substrates. Investigations of the interface structures and wetting phenomena during laser processing are presented and a simple correlation between wetting phenomena and interface strength is derived. Further,this rather theoretical strength of a laser clad layer is put onto a more practical base to describe the actual mechanical performance. It turned out that in the case of Cr, O, on ste

Keywords