Electrolytic formation of group va carbide on an iron, ferrous alloy or cemented carbide article

Abstract From the Canadian patent

A method for forming a carbide layer of a V-a group element of the Periodic Table on the surface of an iron ferrous, alloy or cemented carbide article in a treating molten bath comprising preparing the treating molten bath composed of boric acid or a borate and a V-a group element immersing the article in, the treating molten bath and applying an electric current to the treating molten bath with said article being used as the cathode thereby forming, a very hard carbide layer of said V-a group element of the surface of said article. The method of this invention can form quickly a uniform and dense carbide layer on the surface of the article and can be carried out in the open air.