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Titanium alloy with oxidized zirconium for a prosthetic implant

  • US 8,790,345 B2
  • Filed: 08/21/2007
  • Issued: 07/29/2014
  • Est. Priority Date: 08/21/2007
  • Status: Active Grant
First Claim
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1. A method of forming a prosthetic implant wherein said implant comprises a first titanium articulating member having a first bearing surface and a second articulating member having a second bearing surface forming an articulable joint with said first bearing surface, said method comprising:

  • depositing a coating of zirconium on at least a portion of said first bearing surface;

    heating said coating in an inert atmosphere; and

    heating said coating in the presence of oxygen, after heating said coating in an inert atmosphere;

    wherein the method results in an outer zirconium oxide layer, an inner titanium-zirconium diffusion layer, and an intermediate layer consisting essentially of zirconium, between the outer zirconium oxide layer and the inner titanium-zirconium diffusion layer, such that the inner titanium-zirconium diffusion layer prevents delamination.

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