Sputter Ion Plating on Ti6AlV4 and Ti(Cp): Preparation and Properties ofOxidation and Wear Resistant Coatings

摘要

The application of sputter ion plating as a versatile deposition technique isdescribed. Coatings deposited in such a way help avoid surface embrittlement and crack initiation as a consequence of oxygen penetration and dissolution. Titanium Ti6Al4V and Ti(cp), were coated with Al, Ni, NiCR, Cr and Cr2N. Nickel and aluminum form titanium intermetallics rapidly, while chromium and Cr2N do not. Crack propagation during 3 point bending tests was observed in differently coated Ti6AlAV in the scanning electron microscope. The results which give information on the mechanical behavior of the thin layers are provided. The wear tests in a plate-on-cylinder tribometer show a large decrease of wear if the titanium plates were coated by a PVD/galvanic deposition.