the unexpectedly favorable tribological behavior of this ceramic material in contact with polyethylene may be attributed to the following factors : better values for corrosion resistance characteristics , wettability with liquids , surfact gloss , hardness , and scratch resistance of the ceramic material in comparison with those of the hitherto used metallic implant materials ( aisi-316l steel or cast co-cr-mo alloy ) .
C0038239
steel
C0002154
alloy