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Open AccessArticle

Development of Zirconium-Based Alloys with Low Elastic Modulus for Dental Implant Materials

Department of Materials Science and Engineering, Chosun University, Gwangju 501-759, Korea
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Appl. Sci. 2019, 9(24), 5281; https://doi.org/10.3390/app9245281
Received: 15 November 2019 / Revised: 29 November 2019 / Accepted: 2 December 2019 / Published: 4 December 2019
(This article belongs to the Special Issue Selected Papers from the ICMR 2019)
The stress-shielding effect is a phenomenon in which the mutual coupling between bones and bio-materials of the human body is loosened due to the difference in elastic modulus, and bone absorption occurs due to the difference in density, which causes a shortening of the life of the material. The purpose of this study is to develop a zirconium-based alloy with low modulus and to prevent the stress-shielding effect. Zr–7Cu–xSn (x = 1, 5, 10, 15 mass%) alloys were prepared by an arc-melting process of pure zirconium, oxygen-free copper, and tin, respectively. The Zr–7Cu–xSn alloy has two phase α-Zr and Zr2Cu intermetallic compounds. Microstructure characterization was analyzed by microscopy and X-ray diffraction. Corrosion tests of zirconium-based alloys were conducted through polarization tests, and zirconium-based alloys had better corrosion characteristics than other metal bio-materials. In general, the elastic modulus value (14–25 GPa) of the zirconium-based alloy is very similar to the elastic modulus value (15–30 GPa) of the human bone. Consequently, the zirconium-based alloy is likely to be used as a bio-material that negates the effect of stress shielding on human bones. View Full-Text
Keywords: biomaterials; zirconium; dental implant; elastic modulus; alloy design biomaterials; zirconium; dental implant; elastic modulus; alloy design
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Kim, M.; An, S.; Huh, C.; Kim, C. Development of Zirconium-Based Alloys with Low Elastic Modulus for Dental Implant Materials. Appl. Sci. 2019, 9, 5281.

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