Ti-Pd계 합금의 미세조직변화에 따른 부식거동
Corrosion Behavior of Ti-Pd System Alloys by Microstructural changes
차성수, 곽동주, 남상용,
소속 상세정보
차성수 ( Cha Sung-Soo ) - 진주보건대학 치기공과
곽동주 ( Kwak Dong-Ju ) - 대구보건대학 치기공과
남상용 ( Nam Sang-Yong ) - 대구보건대학 치기공과
KMID : 0362120080300020009
Abstract
The surface microstructural changes, mechanical properties and corrosion resistance of Ti-Pd alloys for dental biomaterials have been investigated. Ti, Ti-Pd alloys were melted in arc furnace and the corrosion resistance of Ti-Pd alloys was evaluated by anodic polarization test. The surface microstructural changes and mechanical properties of Ti-Pd alloys were analysed by scanning electron microscope and Vickers micro-hardness tester. The vickers hardnees of pure Ti improved by addition of Pd but Ti-25Pd alloy showed decreasing compared with Ti-15Pd. And anodic polarization and potentiostatic test were conducted in 5% HCl to quantify the resistance to corrosion with the addition of Pd, There was no significant difference in corrosion resistance between pure Ti, Ti-5Pd and Ti-15Pd alloy. However, Ti-25Pd alloy showed decreasing compared with pure Ti in corrosion resistance. From these results, it was concluded that newly formulated Ti-15Pd experimental alloy have adequate hardness and high corrosion resistance, and this alloy is promising candidate for a successful dental casting alloy.
키워드
Corrosion behavior; micro-hardness; Titanium alloys; Ti-Pd alloy; Ti-Pd microstructure
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