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http://dx.doi.org/10.7844/kirr.2012.21.1.060

Preparation and oxygen control of Ti-6Al-4V alloys by recycling dental pure Ti scraps  

Oh, Jung-Min (Mineral Resource Research Division, Korea Institute of Geoscience & Mineral Resources)
Lee, Back-Kyu (Mineral Resource Research Division, Korea Institute of Geoscience & Mineral Resources)
Choi, Good-Sun (Gangwon Industrial Technology Research Center, Research Institute of Industrial Science & Technology)
Lim, Jae-Won (Mineral Resource Research Division, Korea Institute of Geoscience & Mineral Resources)
Publication Information
Resources Recycling / v.21, no.1, 2012 , pp. 60-65 More about this Journal
Abstract
The Ti-6Al-4V alloys were prepared by recycling of dental Ti pure scraps using vacuum arc melting process, and their physical properties were evaluated the Ti-6Al-4V alloys with different oxygen concentrations. For the preparation of Ti-6Al-4V alloys, Ti pure scraps used for dental implant were utilized as a raw material, and their different oxygen concentrations were ranged from G1 to G4 grade in ASTM standards. It was confirmed that the weight loss of Al in the composition of Ti-6Al-4V alloy could be controlled under the Ar pressure of 875 torr during the melting of alloy. The oxygen concentrations of the Ti-6Al-4V alloys were ranged from 1170 to 3340 ppm. The vickers hardness change of the Ti-6Al-4V alloys showed a similar behavior with that of pure Ti. As a result, we confirmed a possibility of preparation of Ti-6Al-4V alloy by recycling of dental Ti scraps using vacuum arc melting process in this study.
Keywords
Titanium; Dental Scrap; Vacuum arc melting; Ti-6Al-4V; Oxygen;
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