Effect of thermal spray process for depositing hydroxyapatite coating on a titanium alloy on its fatigue performance

Abstract

In its forged state, Ti-6Al-4V alloy is used to fabricate the femoral component of the Zweymuller hip implant design and the Muller wrist prosthesis. The fatigue performance of Ti-6Al-4V deposited with hydroxyapatite (HA) coatings by plasma spraying (PS) and high-velocity oxyfuel (HVOF) technique were compared. Statistically-significant differences were found between uncoated and HVOF HA-coated specimens, and between HVOF HA-coated and PS HA-coated specimens. However, there was no significant difference between the uncoated and PS HA-coated specimens. Although the HVOF process shows promise, various process parameters need to be optimized before it can be recommended for use in depositing HA on implants prior to their clinical use.

Publication Title

Southern Biomedical Engineering Conference - Proceedings

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