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Hard coatings deposited by arc-evaporation PVD are adequate solutions for increasing the lifetime of tools and components commonly employed in many different industrial applications.The present paper reports a comparative study of the tribological properties of the most employed hard coatings like TiN, TiCN, TiAlN, CrN and ZrN. In this study, microhardness tests were carried out by using a microindenter...
This paper reports a comparative study of the modifications induced by Nitrogen implantation on metals of the Va group. Doses of 1.25×10 17 , and 7×10 17 of atomic (N + ) and of 3.5×10 17 , and 6×10 17 molecular (N 2+ ) Nitrogen at 150 keV energy were implanted on vanadium, niobium and tantalum polished samples, to investigate the tribological effects...
This paper reports the study of the effects induced by nitrogen implantation on metals of the IVb group. Different doses of atomic and molecular nitrogen have been implanted on titanium, zirconium and hafnium samples to investigate their reactivity towards nitrides precipitation. Microhardness, friction and wear tests have been carried out. An increase in microhardness was found where, in some cases,...
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