Iron-based alloys suitable for providing hard and wear resistant coatings on substrates, articles having hard and wear resistant coatings, and methods of making the same

摘要

The present invention relates to an iron-based alloy capable of providing a coating on a substrate, wherein the coating simultaneously has high hardness and wear resistance. Ferrous alloys comprise 3.0-7.0 wt.% Cr; 1.3-3.0 weight percent C; 0.2-2.0 wt.% B; 2.0-10.0 wt.% V; Optionally 1.5% by weight or less of Si; Optionally up to 1.0% Mn, optionally up to 2.0% Mo; Optionally no greater than 1.5 weight percent Ni; The rest consists of Fe and unavoidable impurities. The invention also relates to an article comprising a substrate and a coating formed thereon, and a method of forming a coated article, wherein the coating is formed from an alloy. This method preferably uses HVOF, laser cladding or plasma cladding.