An Overview Of Hardfaced Coatings For Industrial Use

Abstract

The wear of critical pump components costs the industry millions of dollars annually. This loss can be mitigated by the use of hardfacing to minimize wear. The correct selection of a hardface coating requires an understanding of the different techniques and compositions available to a user. An overview is presented of available hardface techniques, including interstitial diffusion coatings, metallizing, Stelliting, plasma-transfer-arc, plasma spray, the spray and fuse braze coatings, and the detonation gun. Several recent developments including a vacuum plasma spray, graded coatings, laser coatings, and ion implantation, will be discussed.