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Structure, mechanical properties, and grindability of dental Ti–Zr alloys

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Abstract

Structure, mechanical properties and grindability of a series of binary Ti–Zr alloys with zirconium contents ranging from 10 to 40 wt% have been investigated. Commercially pure titanium (c.p. Ti) was used as a control. Experimental results indicated that the diffraction peaks of all the Ti–Zr alloys matched those for α Ti. No β-phase peaks were found. The hardness of the Ti–Zr alloys increased as the Zr contents increased, and ranged from 266 HV (Ti–10Zr) to 350 HV (Ti–40Zr). As the concentration of zirconium in the alloys increased, the strength, elastic recovery angles and hardness increased. Moreover, the elastically recoverable angle of Ti–40Zr was higher than of c.p. Ti by as much as 550%. The grindability of each metal was found to be largely dependent on the grinding conditions. The Ti–40Zr alloy had a higher grinding rate and grinding ratio than c.p. Ti at low speed. The grinding rate of the Ti–40Zr alloy at 500 m/min was about 1.8 times larger than that of c.p. Ti, and the grinding ratio was about 1.6 times larger than that of c.p. Ti. Our research suggested that the Ti–40Zr alloy has better mechanical properties, excellent elastic recovery capability and improved grindability at low grinding speed. The Ti–40Zr alloy has a great potential for use as a dental machining alloy.

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Acknowledgment

This work was supported by grants, NSC95-2622-E-212-003-CC3 and NSC96-2622-E-212-008-CC3, provided by National Science Council of Taiwan.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Da-Yeh University, Chang-Hwa, Taiwan, R.O.C

    Wen-Fu Ho

  2. Department of Mechanical and Automation Engineering, Da-Yeh University, Chang-Hwa, Taiwan, R.O.C

    Wei-Kai Chen

  3. Department of Dental Laboratory Technology, Central Taiwan University of Science and Technology, No. 11, Buzih Lane, Beitun District, Taichung, 40605, Taiwan, R.O.C

    Shih-Ching Wu & Hsueh-Chuan Hsu

  4. Institute of Biomedical Engineering and Material Science, Central Taiwan University of Science and Technology, Taichung, Taiwan, R.O.C

    Shih-Ching Wu & Hsueh-Chuan Hsu

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  1. Wen-Fu Ho
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  2. Wei-Kai Chen
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  3. Shih-Ching Wu
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  4. Hsueh-Chuan Hsu
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Correspondence to Hsueh-Chuan Hsu.

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Ho, WF., Chen, WK., Wu, SC. et al. Structure, mechanical properties, and grindability of dental Ti–Zr alloys. J Mater Sci: Mater Med 19, 3179–3186 (2008). https://doi.org/10.1007/s10856-008-3454-x

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  • DOI: https://doi.org/10.1007/s10856-008-3454-x

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