Molybdenum News Center

The Cobalt–Chromium–Molybdenum Alloy,2013-I

Osteolysis caused by wear particles from polyethylene in artificial hip joints is of great concern. Various bearing couple combinations, bearing material improvements, and surface modifications have been attempted to reduce such wear particles.

With the aim of reducing the wear and developing a novel artificial hip-joint system, we created a highly lubricious metal-bearing material: A 2-MPC  polymer was grafted onto the surface of the cobalt–chromium–molybdenum (Co–Cr–Mo) alloy.

For ensuring the long-term retention of poly(MPC) on the Co–Cr–Mo alloy, we used a 4-methacryloxyethyl trimellitate anhydride (4-META) intermediate layer and photo-induced graft polymerization technique to create a strong bonding between the Co–Cr–Mo substrate and the poly(MPC) chain via the 4-META layer.
 

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