Oxidation behaviour of plasma surface alloying on Ti6Al4V alloy.

Authors :: Wei, D.-B.
Zhang, P.-Z.
Yao, Z.-J.
Wei, X.-F.
Zhou, J.-T.
Chen, X.-H.
Source :: Surface Engineering; Jan2018, Vol. 34 Issue 1, p14-21, 8p
Publication Year :: 2018
Abstract: Ti–CrNi alloy coatings with 20, 40, 60 and 80 at-%Ni were prepared on Ti6Al4V alloy surface by double glow plasma surface alloying technique. The cyclic oxidation behaviour of the coatings was investigated at 750, 850 and 950°C. The results show that each coating has a complete structure of settled layer, mutual diffusion layer and sputtering affected zone. When the Ni content was 40 at-%, the Ti–CrNi alloy coating showed the best cyclic oxidation resistance. The oxide scale with ‘Cr2O3film+NiO film’ structure showed the best resistance to peeling. [ABSTRACT FROM AUTHOR]