Corrosion Characteristics of Titanium Alloys for Medical Implant

생체용 Ti 합금의 부식특성

  • Han, Jun-Hyun (Division of Metals, Korea Institute of Science and Technology) ;
  • Lee, Kyu Hwan (Division of Metals, Korea Institute of Science and Technology) ;
  • Shin, Myung Chul (Division of Metals, Korea Institute of Science and Technology)
  • 한준현 (한국과학기술연구원 금속연구부) ;
  • 이규환 (한국과학기술연구원 금속연구부) ;
  • 신명철 (한국과학기술연구원 금속연구부)
  • Received : 1996.03.02
  • Published : 1996.06.25

Abstract

The purpose of this study is to develop new V-free Ti alloys which have good mechanical properties and corrosion resistance. Although pure Ti has an excellent biocompatibility and corrosion resistance in body, it is inferior to Ti alloys in mechanical properties, and Ti-6Al-4V which has good mechanical properties was known to be cytotoxic due to the alloying element V. New Ti based alloys which do not contain the toxic metallic components were developed by the alloy design technique. Their corrosion and mechanical characteristics were compared with pure Ti and Ti-6Al-4V in this study. The results showed that Ti-20Zr-3Nb-3Ta-0.2Pd-1In and Ti-5AI-4Zr-2.5Mo exhibit good mechanical oroperties and an excellent corrosion resistance in 0.9% NaCl solution.