Resistance crevice corrosion Characteristic surface reforming Ti or Ti basic alloy component

摘要

PURPOSE: To provide a technique capable of forming a surface treated layer essentially contg. no problem of adhesion with a Ti basis without deteriorating its machinability by a simple process and a high corosion resistant Ti or Ti base alloy member obtainable particularly by forming the surface treated layer. ;CONSTITUTION: The ions of Ta are implanted in the surface of a Ti or Ti base alloy member to form a Ta concn. enriched layer on the surface layer part of the Ti of Ti base alloy, and by high temp. oxidation treatment, a Ti oxide layer is formed on the Ta concn. enriched layer in a superimposing way. By forming the concn. enriched layer and Ti oxide layer on the surface layer part in a superimposing way, the Ti or Ti base alloy member applicable in a corrosive environment in which use has been difficult heretofore can be realized.;COPYRIGHT: (C)1993,JPO&Japio