Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지

THE EFFECT OF SPRAYING PARAMETEES ON THE PROPERTIES OF HYDROXYAPATITE COATUNG

  • Park, K.S. (New-Tech Co., Ltd.) ;
  • Huh, W.T. (New-Tech Co., Ltd.) ;
  • Son, Y.H. (New-Tech Co., Ltd.) ;
  • Kim, C.K. (New-Tech Co., Ltd.) ;
  • Kim, S.Y. (Department of Materials Engineering, Yeungnam University) ;
  • Kim, S.G. (Production Technology Center, KAITECH) ;
  • Kim, S.W. (Production Technology Center, KAITECH)
  • Published : 1996.12.01
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Abstract

Plasma spraying process was employed to produce HA coating on Ti6A14V alloy for the development of a dental implant. The goal of this research was to find optimum spraying conditions for HA coating on Ti6Al4V. This study was thus designed carefully to evaluate how spraying parameters affect various physical properties of a HA coating layer, such as phase composition and bond strength. In plasma spraying, spraying parameters such as hydrogen flow rates and spraying distances were varied systematically to change the degree of the melting of starting HA powder in plasma jet. It was revealed that the deposition efficiency increased with increasing a hydrogen flow rate, and the bond strength between the HA-coated layer and Ti-alloy substrate increased with hydrogen flow rate, but decreased with spraying distance. Therefore, the hydrogen flow rate and the spraying distance should be carefully controlled to obtain the reasonable bond strength simultaneously.

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