Method for Ceramic Peening of Orthopaedic Titanium Alloy Implants

Author:  Beals et al.
Source:  US Patent 5,704,239
Doc ID:  1996146
Year of Publication:  1996
Abstract:  
A method of preparing fretting wear resistant titanimbase alloy orthopaedic implants includes the steps of shot peening the surface of the implant with spherical ceramic beads of a selected size and density, and with selected intensity such that the fretting wear resistance of the implant is increased and wherein the implant surface is uniformly peened to create a compressively-stressed region within the surface of approximately 100-300 microns depth.