| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a surface treatment method that improves abrasion resistance by curing only a desired portion on the surface of a treated object while suppressing deterioration of smoothness of the surface of the treated object and shape change in a treatment process, and provide a metal member.SOLUTION: In a surface treatment method in which the surface of a treated object is treated by thermal plasma under atmosphere of nitrogen gas, by controlling the distance between the thermal plasma and the treated object, the surface of the treated objected is nitrided. After machine work of a base material comprising a ferrous material, a metal member is subjected to surface treatment by the surface treatment method.</p> |
