Surface carburization technique of medical titanium alloy...

Details Surface carburization technique of medical titanium alloy... Surface carburization technique of medical titanium alloy...

2011-04-05

2011-04-05

King, Roy (Department: 1733)

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

C148S237000, C148S421000

Reexamination Certificate

active

07918944

ABSTRACT:
A surface carburization technique of medical titanium alloy femoral head in total hip arthroplasty comprises subjecting medical titanium alloy TC4 to surface carburization by using acetylene as carburizing agent to carry out gaseous carburization at high temperature to give medical titanium alloy femoral head in total hip arthroplasty with TiC ceramic on surface thereof. The TiC ceramic layer on femoral head can be more than 100 micron thick, which is relatively thick, overcomes the disadvantages in available medical titanium alloy material, and is particularly useful for replacement of total hip or knee arthroplasty.

REFERENCES:
patent: 2004010979 (2004-01-01), None
Tanaka, English machine translation of JP 2004-010979A, 2004.
Kim, et al., “Characterization of Ti-6A1-4V alloy modified by plasma carburizing process,” Materials Science and Engineering A361 (2003) pp. 275-280.
Vadiraj, et al., “Effect of surface treatments on fretting fatigue damage of biomedical titanium alloys,” Tribology International 40 (2007) pp. 82-88.
Österle, et al., “Potential of wear resistant coatings on Ti-6A1-4V for artificial hip joint bearing surfaces,” Wear 264 (2008) pp. 505-517.
Niinomi, “Mechanical biocompatibilities of titanium alloys for biomedical applications,” Journal of the Mechanical Behavior of Biomedical Materials 1 (2008) pp. 30-42.

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