| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide orthopaedic implants with scratch-, wear- and corrosion-resistant ceramic coatings on metal substrates, and to provide a method for manufacturing the related coatings. <P>SOLUTION: The metal substrate is advantageously subjected to HIP, and homogenized prior to coating with the ceramics, and the metal substrate subjected to the HIP and homogenized is preferably ground and polished prior to coating with the ceramics. The ceramic coatings may include a band with multiple thin alternating layers of titanium nitride, titanium carbonitride or both titanium nitride and titanium carbonitride, and may include an alumina overcoat. The present coatings curtail the growth of microcracks that can otherwise result from surface cracks or scratches on coated substrates, which provides improved wear characteristics, scratch resistance, and prevent the penetration of corrosive fluids to the substrate material. <P>COPYRIGHT: (C)2012,JPO&INPIT |
