Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
권호 표지

Wear Properties of Cast Titanium Alloys for Dental Use

치과용 Titanium 주조합금의 마멸특성

  • Choi, Seok-Kyu (Department of Dentistry, Pusan National University) ;
  • Kim, Hyung-Il (Department of Dentistry, Pusan National University) ;
  • Park, Ik-Min (Department of Metallurgical Engineering, Pusan National University)
  • 최석규 (부산대학교 치과대학 치의학과) ;
  • 김형일 (부산대학교 치과대학 치의학과) ;
  • 박익민 (부산대학교 공과대학 금속공학과)
  • Published : 1991.12.20
Download PDF
⟨ Previous Next ⟩

Abstract

This study presents the wear characteristics of Ti alloys (Pure Ti, Ti-6Al-4V, Ti-5Al-2.5Sn) fabricated by centrifugal precision casting in an Ohara dental titanium casting machine. It was found that the hardness of the surface region is higher than that of the interior region. It is considered that the oxygen adsorption in the surface region during casting, leads to the interstitial solid solution hardening. Wear resistance incerases in the order of pure Ti, Ti-6Al-4V, Ti-5Al-2.5Sn alloys. The interior hardness value increases in the same order. The specific wear rate increases with applied load and increases monotonously with sliding speed. The Fe transfer from the counterpart material was observed on the worn surface of the Ti-5Al-2.5Sn alloy. Oxidative wear occurs at low sliding speeds and mechanical fracture wear occurs at high sliding speeds.

Keywords