Method of Hardening Surface of Metallic Part, Piston, Cylinder Head, and Cylinder Block Each Produced Using the Surface-Hardening Method, and Process for Producing the Same

Abstract

With regard to a surface hardening method that a surface of an engine member is coated with an alloy layer having high abrasive resistance so as to improve life of the member and a production method of a piston or the like that abrasive resistance of the member is improved by the hardening method, a surface of a metal base material is coated uniformly with mixture including metal powder, a binder and solvent so as to form a coat, and the coat is dried and applied thereon with laser or electron beam so as to be sintered and dispersed for forming an alloy layer on a surface of the metal base material and for bonding the alloy layer to the metal base material.

Dependencies are inferred from the claim text.