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KMID : 0362220100370020171
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Journal of The Korean Research Society for Dental Materials
2010 Volume.37 No. 2 p.171 ~ p.176
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Development of Ti-Nb-X System Titanium Alloys for dentals
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Won Dae-Hee
Yoon Dong-Joo
Lee Min-Ho
Kim Yang-Soo
Kim Byung-Il
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Abstract
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This study developed titanium alloy with low elastic modulus to be used as dental implant. The new titanium alloy was prepared as ternary and quaternary alloy by adding tantalum (Ta) and zirconium (Zr) into the Ti-Nb-X system alloy. In designing the new titanium alloy, two physical variables bond order (Bo) and d-electron orbit energy level (Md) were varied. Bond order (Bo) was around 2.8364～2.8742, and d-electron orbit energy level (Md) was 2.4572～2.4757. The elastic modulus of the developed titanium alloy was 87.2～63.0 GPa. In the results of X-ray diffraction analysis, ß-phase was observed in all the specimens, but α-phase texture was also observed in 7Nb15Ta8.2Zr alloy. According to the results of potentiodynamic polarization experiment, 24Nb17Ta5Zr alloy showed the highest corrosion potential as 3.0㎷.
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KEYWORD
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Titanium alloys, Low elastic modulus, Bond order, d-orbital energy level
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