Wear resistant WC-Co composite hard coatings

Abstract

This paper addresses the feasibility of brazing WC-Co composite hard coatings on to AISI 410 martensitic stainless steel substrates using a nickel based brazing filler metal (AMS 4777D). Coatings of different weight percentages of WC-Co particles and powdered filler metal were prepared through vacuum brazing. The wear characteristics of the coatings were examined using a specially adapted cylinder on cylinder wear tester. The results show that of all the coatings tested, those with WC-Co content in the range 45 to 55 wt-% represent the best compromise in terms of wear resistance and integrity of coating. © 1997 The Institute of Materials.