Wettability, adhesion and mechanical contact strength for silver—diamond and (silver—platinum)—diamond systems


I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Adhesion of Melts and Brazing of Materials - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2007, #40


Wettability of diamond was investigated by silver melts as well as mechanical contact strength between silver drop and substrate after cooling. The wettability and the mechanical contact strength were also measured for platinum-silver melts in contact with diamond and platinum influence on the values under study was estimated. It was found that additions of 10% (at.) of platinum do not influence the diamond wettability by silver. Work of adhesion of the melts increases insignificantly. Platinum additions to the silver promote an increase in the mechanical contact strength between the drop and the substrate. That results from increase of contribution of chemical interaction at the interface to the work of adhesion.