Effect of solute oxygen on compressive fatigue strength of spinal fixation rods made of Ti-29Nb-13Ta-4.6Zr alloys

Yoon Seok Lee; Mitsuo Niinomi; Masaaki Nakai; Kengo Narita; Huihong Liu

doi:10.2320/matertrans.MI201504

Effect of solute oxygen on compressive fatigue strength of spinal fixation rods made of Ti-29Nb-13Ta-4.6Zr alloys

Yoon Seok Lee, Mitsuo Niinomi, Masaaki Nakai, Kengo Narita, Huihong Liu

Research output: Contribution to journal › Article › peer-review

Abstract

In spinal fixation devices, the activity of the patient can cause fretting of the metal-to-metal contacts between the rod and plug, which may result in failures. In this study, compressive fatigue tests were conducted with rods made of Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with oxygen contents of 0.06 mass% (06O) and 0.89 mass% (89O) and Ti-6Al-4V extra low interstitial alloy (Ti64) as comparison in both air and saline solution. The fatigue strength increases in the order of 06O<89O< Ti64 in both air and saline solution. These results indicate that solid-solution strengthening by oxygen improves the fretting fatigue resistance of the TNTZ rod.

Original language	English
Pages (from-to)	1993-1997
Number of pages	5
Journal	Materials Transactions
Volume	57
Issue number	12
DOIs	https://doi.org/10.2320/matertrans.MI201504
Publication status	Published - 2016

Keywords

Biomaterials
Fatigue
Fretting
Orthopedic device
Spinal fixation
Ti-29Nb-13Ta-4.6Zr
Ti-6Al-4V

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Effect of solute oxygen on compressive fatigue strength of spinal fixation rods made of Ti-29Nb-13Ta-4.6Zr alloys",

abstract = "In spinal fixation devices, the activity of the patient can cause fretting of the metal-to-metal contacts between the rod and plug, which may result in failures. In this study, compressive fatigue tests were conducted with rods made of Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with oxygen contents of 0.06 mass% (06O) and 0.89 mass% (89O) and Ti-6Al-4V extra low interstitial alloy (Ti64) as comparison in both air and saline solution. The fatigue strength increases in the order of 06O<89O< Ti64 in both air and saline solution. These results indicate that solid-solution strengthening by oxygen improves the fretting fatigue resistance of the TNTZ rod.",

keywords = "Biomaterials, Fatigue, Fretting, Orthopedic device, Spinal fixation, Ti-29Nb-13Ta-4.6Zr, Ti-6Al-4V",

author = "Lee, {Yoon Seok} and Mitsuo Niinomi and Masaaki Nakai and Kengo Narita and Huihong Liu",

note = "Funding Information: This work was supported in part by the Industrial Technology Research Grant Program in 2009 from the New Energy and Industrial Technology Development Organization (NEDO), Grant-in-Aid for Scientific Research (A), Young Scientists (A), Challenging Exploratory Research from the Japan Society for the Promotion of Science (JSPS), and the Inter-University Cooperative Research Program {"}Innovation Research for Biosis-Abiosis Intelligent Interface{"} from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. Publisher Copyright: {\textcopyright} 2016 The Japan Institute of Metals and Materials.",

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doi = "10.2320/matertrans.MI201504",

language = "English",

volume = "57",

pages = "1993--1997",

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AU - Lee, Yoon Seok

AU - Niinomi, Mitsuo

AU - Nakai, Masaaki

AU - Narita, Kengo

AU - Liu, Huihong

N1 - Funding Information: This work was supported in part by the Industrial Technology Research Grant Program in 2009 from the New Energy and Industrial Technology Development Organization (NEDO), Grant-in-Aid for Scientific Research (A), Young Scientists (A), Challenging Exploratory Research from the Japan Society for the Promotion of Science (JSPS), and the Inter-University Cooperative Research Program "Innovation Research for Biosis-Abiosis Intelligent Interface" from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. Publisher Copyright: © 2016 The Japan Institute of Metals and Materials.

PY - 2016

Y1 - 2016

N2 - In spinal fixation devices, the activity of the patient can cause fretting of the metal-to-metal contacts between the rod and plug, which may result in failures. In this study, compressive fatigue tests were conducted with rods made of Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with oxygen contents of 0.06 mass% (06O) and 0.89 mass% (89O) and Ti-6Al-4V extra low interstitial alloy (Ti64) as comparison in both air and saline solution. The fatigue strength increases in the order of 06O<89O< Ti64 in both air and saline solution. These results indicate that solid-solution strengthening by oxygen improves the fretting fatigue resistance of the TNTZ rod.

AB - In spinal fixation devices, the activity of the patient can cause fretting of the metal-to-metal contacts between the rod and plug, which may result in failures. In this study, compressive fatigue tests were conducted with rods made of Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with oxygen contents of 0.06 mass% (06O) and 0.89 mass% (89O) and Ti-6Al-4V extra low interstitial alloy (Ti64) as comparison in both air and saline solution. The fatigue strength increases in the order of 06O<89O< Ti64 in both air and saline solution. These results indicate that solid-solution strengthening by oxygen improves the fretting fatigue resistance of the TNTZ rod.

KW - Biomaterials

KW - Fatigue

KW - Fretting

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KW - Spinal fixation

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KW - Ti-6Al-4V

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Effect of solute oxygen on compressive fatigue strength of spinal fixation rods made of Ti-29Nb-13Ta-4.6Zr alloys

Abstract

Keywords

ASJC Scopus subject areas

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