Effect of radiation dose on depth-dependent oxidation and wear of shelf-aged gamma-irradiated ultra-high molecular weight polyethylene (UHMWPE)

Lei Zhang; Yoshinori Sawae; Tetsuo Yamaguchi; Teruo Murakami; Hong Yang

doi:10.1016/j.triboint.2014.12.011

Effect of radiation dose on depth-dependent oxidation and wear of shelf-aged gamma-irradiated ultra-high molecular weight polyethylene (UHMWPE)

Lei Zhang, Yoshinori Sawae, Tetsuo Yamaguchi, Teruo Murakami, Hong Yang

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

14 Citations (Scopus)

Abstract

The effect of radiation dose on the depth-dependent oxidation and wear of shelf-aged gamma-irradiated UHMWPE was investigated in this paper. FTIR, micro-indentation, pin-on-plate wear tests and SEM imaging were carried out at three representative regions (surface, subsurface and center) for each sample. The experimental results show that when the oxidation index (OI) <1, the wear rate is clearly affected by the radiation dose (crosslinking density). When 1<OI<3, the wear rates are mainly controlled by the OI. When OI>3 - except for the 1000 kGy specimen - the wear resistance is severely deteriorated and the relationship with the radiation dose is difficult to predict. Results suggest that higher irradiation (above 200 kGy) is capable of lowering the oxidative degradation of UHMWPE.

Original language	English
Pages (from-to)	78-85
Number of pages	8
Journal	Tribology International
Volume	89
DOIs	https://doi.org/10.1016/j.triboint.2014.12.011
Publication status	Published - Sept 2015

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.triboint.2014.12.011

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title = "Effect of radiation dose on depth-dependent oxidation and wear of shelf-aged gamma-irradiated ultra-high molecular weight polyethylene (UHMWPE)",

abstract = "The effect of radiation dose on the depth-dependent oxidation and wear of shelf-aged gamma-irradiated UHMWPE was investigated in this paper. FTIR, micro-indentation, pin-on-plate wear tests and SEM imaging were carried out at three representative regions (surface, subsurface and center) for each sample. The experimental results show that when the oxidation index (OI) <1, the wear rate is clearly affected by the radiation dose (crosslinking density). When 1<OI<3, the wear rates are mainly controlled by the OI. When OI>3 - except for the 1000 kGy specimen - the wear resistance is severely deteriorated and the relationship with the radiation dose is difficult to predict. Results suggest that higher irradiation (above 200 kGy) is capable of lowering the oxidative degradation of UHMWPE.",

author = "Lei Zhang and Yoshinori Sawae and Tetsuo Yamaguchi and Teruo Murakami and Hong Yang",

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T1 - Effect of radiation dose on depth-dependent oxidation and wear of shelf-aged gamma-irradiated ultra-high molecular weight polyethylene (UHMWPE)

AU - Zhang, Lei

AU - Sawae, Yoshinori

AU - Yamaguchi, Tetsuo

AU - Murakami, Teruo

AU - Yang, Hong

PY - 2015/9

Y1 - 2015/9

N2 - The effect of radiation dose on the depth-dependent oxidation and wear of shelf-aged gamma-irradiated UHMWPE was investigated in this paper. FTIR, micro-indentation, pin-on-plate wear tests and SEM imaging were carried out at three representative regions (surface, subsurface and center) for each sample. The experimental results show that when the oxidation index (OI) <1, the wear rate is clearly affected by the radiation dose (crosslinking density). When 1<OI<3, the wear rates are mainly controlled by the OI. When OI>3 - except for the 1000 kGy specimen - the wear resistance is severely deteriorated and the relationship with the radiation dose is difficult to predict. Results suggest that higher irradiation (above 200 kGy) is capable of lowering the oxidative degradation of UHMWPE.

AB - The effect of radiation dose on the depth-dependent oxidation and wear of shelf-aged gamma-irradiated UHMWPE was investigated in this paper. FTIR, micro-indentation, pin-on-plate wear tests and SEM imaging were carried out at three representative regions (surface, subsurface and center) for each sample. The experimental results show that when the oxidation index (OI) <1, the wear rate is clearly affected by the radiation dose (crosslinking density). When 1<OI<3, the wear rates are mainly controlled by the OI. When OI>3 - except for the 1000 kGy specimen - the wear resistance is severely deteriorated and the relationship with the radiation dose is difficult to predict. Results suggest that higher irradiation (above 200 kGy) is capable of lowering the oxidative degradation of UHMWPE.

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JF - Tribology International

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Effect of radiation dose on depth-dependent oxidation and wear of shelf-aged gamma-irradiated ultra-high molecular weight polyethylene (UHMWPE)

Abstract

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