TY - JOUR
T1 - Mechanical properties and cyto-toxicity of newly designed β type Ti alloys for dental applications
AU - Akahori, Toshikazu
AU - Niinomi, Mitsuo
AU - Harada, Masaaki
AU - Takeda, Junji
AU - Toda, Hiroyuki
AU - Katsura, Sigeki
AU - Takeuchi, Tsutomu
AU - Fukui, Hisao
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2005/1
Y1 - 2005/1
N2 - Ti-29Nb-13Zr-2Cr, Ti-29Nb-15Zr-1.5Fe, Ti-29Nb-10Zr-0.5Si, Ti-29Nb-10Zr-0.5Cr-0.5Fe and Ti-29Nb-18Zr-2Cr-0.5Si were newly designed for dental applications. These alloys were designed based on Ti-29Nb-13Ta-4.6Zr (TNTZ), replacing relatively high melting point element, Ta, with beta stabilizing elements such as Cr, Fe and Si, which would lower the melting point of the alloy. Their melting points, mechanical properties, and cytotoxicity were investigated in this study. The following results were obtained. Melting points of designed alloys decrease about 50 to 370 K as compared with that of TNTZ, and Ti-29Nb-13Zr-2Cr has the lowest melting point around 2050 K. Vickers hardness of the surface of each designed alloy cast into modified magnesia based investment material is in the range of 400HV to 500HV, which is lower than that of TNTZ (around 560HV). Balances of the strength and the ductility of Ti-29Nb-13Zr-2Cr, Ti-29Nb-15Zr-1.5Fe and Ti-29Nb-10Zr-0.5Cr-0.5Fe are nearly equal to those of TNTZ. Cell viability of each designed alloy is excellent.
AB - Ti-29Nb-13Zr-2Cr, Ti-29Nb-15Zr-1.5Fe, Ti-29Nb-10Zr-0.5Si, Ti-29Nb-10Zr-0.5Cr-0.5Fe and Ti-29Nb-18Zr-2Cr-0.5Si were newly designed for dental applications. These alloys were designed based on Ti-29Nb-13Ta-4.6Zr (TNTZ), replacing relatively high melting point element, Ta, with beta stabilizing elements such as Cr, Fe and Si, which would lower the melting point of the alloy. Their melting points, mechanical properties, and cytotoxicity were investigated in this study. The following results were obtained. Melting points of designed alloys decrease about 50 to 370 K as compared with that of TNTZ, and Ti-29Nb-13Zr-2Cr has the lowest melting point around 2050 K. Vickers hardness of the surface of each designed alloy cast into modified magnesia based investment material is in the range of 400HV to 500HV, which is lower than that of TNTZ (around 560HV). Balances of the strength and the ductility of Ti-29Nb-13Zr-2Cr, Ti-29Nb-15Zr-1.5Fe and Ti-29Nb-10Zr-0.5Cr-0.5Fe are nearly equal to those of TNTZ. Cell viability of each designed alloy is excellent.
KW - Beta titanium alloy
KW - Biocompatibility
KW - Casting
KW - Melting point
KW - Surface reaction layer
KW - Tensile properties
UR - http://www.scopus.com/inward/record.url?scp=14844349798&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=14844349798&partnerID=8YFLogxK
U2 - 10.2320/jinstmet.69.96
DO - 10.2320/jinstmet.69.96
M3 - Article
AN - SCOPUS:14844349798
VL - 69
SP - 96
EP - 102
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
SN - 0021-4876
IS - 1
ER -