TY - JOUR
T1 - Effects of heat treatment and load on frictional wear characteristics of β-Type Ti-Nb-Ta-Zr system alloy for biomedical applications in air and simulated body environment
AU - Akahori, Toshikazu
AU - Niinomi, Mitsuo
AU - Watanabe, Manabu
AU - Nakai, Masaaki
AU - Fukui, Hisao
AU - Ogawa, Michiharu
PY - 2007/4/1
Y1 - 2007/4/1
N2 - The frictional wear characteristics of heat-treated Ti-29Nb-13Ta-4.6Zr (TNTZ) subjected to solution treatment (TNTZST) or aging treatments at 598, 673, and 723 K, respectively after solution treatment (TNTZ 598 K, TNTZ673 K, and TNTZ 723 K, respectively) and Ti-6Al-4V ELI (Ti64) subjected to aging treatment after solution treatment (T64STA) in air and simulated body environment (Ringer's solution) were investigated as a function of load in this study. Wear weight losses of TNTZST, TNTZ598 K, TNTZ673 K, TNTZ 723 K, and Ti64STA are smaller in Ringer's solution than in air under both low and high loading conditions (1.96 and 29.4N, respectively). This is considered to suggest that the frictional coefficient decreased because of the lubricant effect of Ringer's solution between the contact surfaces of specimen and zirconia ball as mating material. The wear losses of TNTZST, TNTZ598 K, TNTZ673 K, TNTZ723 K, and Ti64STA increase with increasing load in Ringer's solution. The wear losses of TNTZST, TNTZ598 K, TNTZ698 K, and TNTZ723 K at a low loading level are smaller than that of Ti64STA in Ringer's solution. On the other hand, the wear losses of TNTZ598 K and TNTZ673 K at a high loading level are larger than that of Ti64STA in Ringer's solution. This reason is that the transition point from sever wear to mild wear versus load is changed according to the materials.
AB - The frictional wear characteristics of heat-treated Ti-29Nb-13Ta-4.6Zr (TNTZ) subjected to solution treatment (TNTZST) or aging treatments at 598, 673, and 723 K, respectively after solution treatment (TNTZ 598 K, TNTZ673 K, and TNTZ 723 K, respectively) and Ti-6Al-4V ELI (Ti64) subjected to aging treatment after solution treatment (T64STA) in air and simulated body environment (Ringer's solution) were investigated as a function of load in this study. Wear weight losses of TNTZST, TNTZ598 K, TNTZ673 K, TNTZ 723 K, and Ti64STA are smaller in Ringer's solution than in air under both low and high loading conditions (1.96 and 29.4N, respectively). This is considered to suggest that the frictional coefficient decreased because of the lubricant effect of Ringer's solution between the contact surfaces of specimen and zirconia ball as mating material. The wear losses of TNTZST, TNTZ598 K, TNTZ673 K, TNTZ723 K, and Ti64STA increase with increasing load in Ringer's solution. The wear losses of TNTZST, TNTZ598 K, TNTZ698 K, and TNTZ723 K at a low loading level are smaller than that of Ti64STA in Ringer's solution. On the other hand, the wear losses of TNTZ598 K and TNTZ673 K at a high loading level are larger than that of Ti64STA in Ringer's solution. This reason is that the transition point from sever wear to mild wear versus load is changed according to the materials.
KW - Beta type titanium alloy
KW - Biomaterial
KW - Frictional wear
KW - Mild wear
KW - Sever wear
KW - Simulated body environment
UR - http://www.scopus.com/inward/record.url?scp=34249808492&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34249808492&partnerID=8YFLogxK
U2 - 10.2320/jinstmet.71.407
DO - 10.2320/jinstmet.71.407
M3 - Article
AN - SCOPUS:34249808492
VL - 71
SP - 407
EP - 414
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 - 4
ER -