TY - GEN
T1 - Wear properties of Ti-6Al-4V/Ti-29Nb-13Ta-4.6Zr combination for spinal implants
AU - Lee, Yoon Seok
AU - Niinomi, Mitsuo
AU - Nakai, Masaaki
AU - Hieda, Junko
AU - Cho, Ken
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - The wear mechanisms of a conventional titanium alloy, Ti-6Al-4V extra-low interstitial (Ti64), and a new titanium alloy, Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) were studied to investigate the wear properties of a Ti64/TNTZ combination for spinal fixation devices. Balls and discs made of Ti64 and TNTZ were prepared to be used as wear-test specimens. Frictional wear tests of Ti64 and TNTZ discs were carried out against Ti64 and TNTZ balls in air using a ball-on-disc frictional wear testing system. The wear mechanisms were investigated by analysis of worn surfaces and wear debris using scanning electron microscopy. Volume losses of the TNTZ discs were found to be larger than those of the Ti64 discs, regardless of mating ball. Furthermore, the morphologies of wear tracks and debris were found to be different between TNTZ and Ti64 discs. It is considered that the wear mechanism for a Ti64 disc is oxidative wear, whereas that for a TNTZ disc is delamination wear, regardless of mating ball material.
AB - The wear mechanisms of a conventional titanium alloy, Ti-6Al-4V extra-low interstitial (Ti64), and a new titanium alloy, Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) were studied to investigate the wear properties of a Ti64/TNTZ combination for spinal fixation devices. Balls and discs made of Ti64 and TNTZ were prepared to be used as wear-test specimens. Frictional wear tests of Ti64 and TNTZ discs were carried out against Ti64 and TNTZ balls in air using a ball-on-disc frictional wear testing system. The wear mechanisms were investigated by analysis of worn surfaces and wear debris using scanning electron microscopy. Volume losses of the TNTZ discs were found to be larger than those of the Ti64 discs, regardless of mating ball. Furthermore, the morphologies of wear tracks and debris were found to be different between TNTZ and Ti64 discs. It is considered that the wear mechanism for a Ti64 disc is oxidative wear, whereas that for a TNTZ disc is delamination wear, regardless of mating ball material.
KW - Frictional wear
KW - Metallic biomaterial
KW - Ti-29Nb-13Ta-4.6Zr
KW - Ti-6Al-4V
KW - Titanium alloy
KW - Wear mechanism
UR - http://www.scopus.com/inward/record.url?scp=84901483663&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901483663&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.922.424
DO - 10.4028/www.scientific.net/AMR.922.424
M3 - Conference contribution
AN - SCOPUS:84901483663
SN - 9783038350743
T3 - Advanced Materials Research
SP - 424
EP - 428
BT - THERMEC 2013 Supplement
PB - Trans Tech Publications
T2 - 8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013
Y2 - 2 December 2013 through 6 December 2013
ER -