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Dent Mater J. 2004 Jun;23(2):203-10.

Mechanical properties and grindability of experimental Ti-Au alloys.

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Divison of Dental Biomaterials, Graduate School of Dentistry, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Miyagi, Japan.


Experimental Ti-Au alloys (5, 10, 20 and 40 mass% Au) were made. Mechanical properties and grindability of the castings of the Ti-Au alloys were examined. As the concentration of gold increased to 20%, the yield strength and the tensile strength of the Ti-Au alloys became higher without markedly deteriorating their ductility. This higher strength can be explained by the solid-solution strengthening of the a titanium. The Ti-40%Au alloy became brittle because the intermetallic compound Ti3Au precipitated intensively near the grain boundaries. There was no significant difference in the grinding rate and grinding ratio among all the Ti-Au alloys and the pure titanium at any speed.

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