Journal of Technologic Dentistry (대한치과기공학회지)
- Volume 30 Issue 2
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- Pages.9-16
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- 2008
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- 1229-3954(pISSN)
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- 2288-5218(eISSN)
Corrosion Behavior of Ti-Pd System Alloys by Microstructural changes
Ti-Pd계 합금의 미세조직변화에 따른 부식거동
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Cha, Sung-Soo
(Department of Dental Laboratory Technology, Jinju Health College) ;
- Kwak, Dong-Ju (Department of Dental Laboratory Technology, Daegu Health College) ;
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Nam, Sang-Yong
(Department of Dental Laboratory Technology, Daegu Health College)
- Published : 2008.12.31
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.