Long-Lasting Antibacterial Metallic Surfaces and Methods for their Production

摘要

A method of modifying a surface characteristic of a stainless steel or cobalt-chromium (Co—Cr) based alloy article, comprising plasma surface co-alloying the article (such as by active screen plasma surface co-alloying), with both interstitial and substitutional alloying elements at a temperature in the range of from 300 to 600° C. and at a pressure of from 100 to 1500 Pa for 1 to 50 hours in an atmosphere comprising N-containing, C-containing or N/C-containing gas.