Hf가 첨가된 생체용 Ti-15Sn-4NB 합금의 미세조직 및 내식성
Microstructure and Corrosion Resistance of Ti-15Sn-4Nb Alloy with Hf Adding Element
이도재, 이경구, 조규종, 윤택림, 박효병,
소속 상세정보
이도재 ( Lee Doh-Jae ) - (주)프로메디
이경구 ( Lee Kyung-Ku ) - (주)프로메디
조규종 ( Cho Kyu-Zong ) - 전남대학교 공과대학 자동차공학부
윤택림 ( Yoon Taek-Rim ) - 전남대학교 의과대학 정형외과학교실
박효병 ( Park Hyo-Byeong ) - 광주보건대학교 치기공과
KMID : 0362120010230010055
Abstract
This study is focusing on the improvement of problems of Ti-6Al-4V alloy. A new Ti based alloy, Ti-15Sn-4Nb, have designed to examine any possibility of improving the mechanical properties and biocompatibility. Specimens of Ti alloys were melted in vacuum arc furnace and homogenized at for 24h. All specimens were solution treated at and aged at for 10h. The corrosion resistance of Ti alloys was evaluated by potentiodynamic polarization test and immersion test inl%Lactic acid solutions. Ti-15Sn-4Nb system alloys showed Widmanstatten microstructure after solution treatment which is typical microstructure of type Ti alloys. Analysing the corrosion resistance of Ti alloys, it was concluded that the passive films of Ti-15Sn-4Nb system alloys are more stable than that of Ti-6Al-4V alloys. Also, the corrosion resistance of Ti-15Sn-4Nb system alloys was improved with adding elements, Hf. It was analysed that the passive film of the Ti-15Sn-4Nb alloy which was formed in air atmosphere was consisted of TiO2, SnO and NbO through X-ray photoelectron spectroscopy(XPS) analysis.
키워드
Corrosion resistance; system; alloy; Hf; Ti-15Sn-4Nb
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