Predominant factor determining wear properties of β-type and (α+β)-type titanium alloys in metal-to-metal contact for biomedical applications

Recent Topics of Titanium Research and Development in Japan

“…The wear properties of titanium alloys (TNTZ versus Ti-6Al-4V), which are expected to be used for spinal fixation devices [45], and the adhesive strength of surface modified layer such as HAp [46] [47] and blood compatible polymer [48] on titanium alloys are also being investigated.…”

Wear transition of solid-solution-strengthened Ti–29Nb–13Ta–4.6Zr alloys by interstitial oxygen for biomedical applications

“…In previous studies, V loss of the combinations for Ti64 and TNTZ (TNTZ with 0.06 mass% oxygen content, 06O) was obtained to compare the amount of wear debris generated during wear tests in both air [11] and Ringer's solution [12]. V loss of discs and balls made of Ti64 and 06O subjected to frictional wear tests in air and Ringer's solution are represented in Fig.…”

“…Based on the results of previous studies [11,12], it has been concluded that volume losses (V loss ) of the TNTZ discs and balls are larger than those of the respective Ti64 discs and balls, both in air and Ringer's solution. Particularly, when a TNTZ disc slides against a TNTZ ball, V loss of both the disc and ball reaches the maximum values both in air and Ringer's solution.…”

“…The wear behaviors and mechanisms of two types of titanium alloys have been analyzed and compared previously both in air [11] and Ringer's solution [12]. The first is a conventional (α + β)-type Ti-6Al-4V extra low interstitial (Ti64) alloy, which accounts for approximately 45-60% of the total titanium alloys produced globally [13], and the second is a newly developed β-type Ti alloy for biomedical applications, Ti-29Nb-13Ta-4.6Zr (TNTZ).…”

Microstructures and wear properties of surface treated Ti–36Nb–2Ta–3Zr–0.35O alloy by electron beam melting (EBM)

“…Lee et al [5] studied the wear resistance of Ti-29Nb-13Ta-4.6Zr and Ti-6Al-4V, and showed that the wear loss of the TNTZ is higher than that of Ti-6Al-4V. Long et al [6,7] found that the coefficient of friction of a metastable β-Ti alloy (Ti-35Nb-8Zr-5Ta, 21SRX) was higher than that of the Ti-6Al-4V alloy.…”