Y. S. Borisov, S. G. Voynarovych, A. N. Kislitsa, A. L. Borisova, M. V. Karpetz, A. Y. Tunik, Paton Welding Institute, Kiev, Ukraine
Hydroxyapatite(HA) coatings were deposited onto titanium alloy substates using the microplasma spray(MPS) technique.The fractional-factorial experiment design method was employed to study the rellationships between MPS parameters(amperage,plasma gas flow rate,spray distance and powder rate) and characteristics of HA-coatings(microstructure,morphology,content of crystalline and amorphous phases,texture).Influence of coating thickness and presence of underlayer(from titan or titania) was evaluated also. The results show some peculiarities of HA-coating formation in conditions of microplasma spraying process.
Summary: Characteristics of hydroxyapatite coatings deposited by microplasma spray(MPS)techniques are studied.Influence of MPS parameters,coating thickness and underlayer presence on microstructure,morphology,content of crystalline and amorphous phases,texture is established.
