Method for the production of a metallic substrate having a biocompatible surface and substrate produced using same

US7670636B2 · kind B2 · utility

Assignee

• BAM Bundesanstalt fuer Materialforschung und-pruefung · DE

Inventors

• Georg Berger · Panketal, DE
• Ute Ploska · Berlin, DE

Key dates

• Filing date: Nov 28, 2006
• Grant date: Mar 2, 2010
• Expiry date: Jan 7, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/26
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a method for the production of a metallic substrate having a biocompatible surface and to the substrate that is produced by means of said method. The method comprises treatment of a metal, i.e., Ti, Ti alloys with Al, V, Ta, Nb, Ni, Fe, Mo or mixtures thereof, Ta, Ta alloys with Fe, Al, Cr, stainless steel, with a melt of calcium nitrate and an additional component which is an oxygen salt of Na, K, Li, Mg and mixtures thereof, said treatment being effected at 180-480 ° C. for 0.1 to 12 hours. A substrate is obtained, wherein the overall layer thickness ranges from 10 to below 1600 nm and the fatigue strength of the substrate is in the same fatigue strength range as that of an untreated substrate at equal number of vibrations N.