Biocompatible material made of stainless steel having a martensitic surface layer (US Patent 8597437)

Patent number: 8597437 Kind code: B2 Granted: 2013-12-03 Filed: 2009-09-19 Inventors: Peter Barth (Schelklingen, DE)

Abstract

A biocompatible material is made of a rust-resistant, alloyed stainless steel which is configured with at least one martensitic surface layer which is formed by a heat treatment with nitrogen case hardening and subsequent cooling. The surface layer, orthogonally to the surface into the sample interior, displaying a virtually linear course of the accompanying