Cold atmospheric pressure gas plasma enhances the wear performance of ultra-high molecular weight polyethylene

2012 ◽  
Vol 8 (3) ◽  
pp. 1357-1365 ◽  
Author(s):  
Stefano Perni ◽  
Michael G. Kong ◽  
Polina Prokopovich
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Atmospheric Pressure ◽  
Wear Performance ◽  
Gas Plasma ◽  
Ultra High Molecular Weight

SiO2 modified graphene oxide hybrids for improving fretting wear performance of ultra-high molecular weight polyethylene

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xiaocui Xin ◽  
Yunxia Wang ◽  
Zhaojie Meng ◽  
Fengyuan Yan
Keyword(s):  
Molecular Weight ◽  
Wear Resistance ◽  
High Molecular Weight ◽  
Design Methodology ◽  
Fretting Wear ◽  
Wear Performance ◽  
Content Type ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Ultra High Molecular Weight

Purpose The purpose of this paper is to investigate the fretting wear performance of ultra-high-molecular-weight-polyethene (UHMWPE) with addition of GO and SiO2. Design/methodology/approach In this study, GO were synthesized and SiO2 nanoparticles were grafted onto GO. The effect of nanofiller on fretting wear performance of UHMWPE was investigated. Findings The results indicated that GO was successfully synthesized and SiO2 nanoparticles successfully grafted onto GO. Incorporation of GS was beneficial for the reduction in friction and the improvement in wear resistance of UHMWPE. GO was beneficial for reducing friction coefficient, while SiO2 was good for improving wear resistance. There existed a tribological synergistic effect between GO nanosheet and SiO2 nanoparticles. Research limitations/implications The hybrids of GS were promising nanofiller for improving the fretting wear performance of UHMWPE. Originality/value The main originality of the research is to reveal the effect of GO and SiO2 nanoparticles on fretting behavior of UHMWPE. The result indicated hybrids of GS were promising nanofiller for improving the fretting wear performance of UHMWPE.

Fretting wear behavior of WS2/ultra-high molecular weight polyethylene nanocomposites

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xiaocui Xin ◽  
Yunxia Wang ◽  
Zhaojie Meng ◽  
Hao Liu ◽  
Yunfeng Yan ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Peer Review ◽  
High Molecular Weight ◽  
Fretting Wear ◽  
Specific Wear Rate ◽  
Wear Performance ◽  
Content Type ◽  
Ultra High Molecular Weight

Purpose This paper aims to focus on studying the addition of nano-tungsten disulfide (WS2) on fretting wear performance of ultra-high-molecular-weight-polyethylene (UHMWPE). Design/methodology/approach In this study, the effect of WS2 content on fretting wear performance of UHMWPE was investigated. The fretting wear performance of the UHMWPE and WS2/UHMWPE nanocomposites were evaluated on oscillating reciprocating friction and wear tester. The data of the friction coefficient and the specific wear rate were obtained. The worn surfaces of composites were observed. The transfer film and its component were analyzed. Findings With the addition of 0.5% WS2, the friction coefficient and specific wear rate increased. With the content increased to 1% and 1.5%, the friction coefficient and specific wear rate decreased. The lowest friction coefficient and specific wear rate were obtained with the addition of 1.5% nano-WS2. Continuingly increasing content, the friction coefficient and wear rate increased but lower than that of pure UHMWPE. Research limitations/implications The research indicated the fretting wear performance related to the content of nano-WS2 with the incorporation of WS2 into UHMWPE. Practical implications The result may help to choose the appropriate content. Originality/value The main originality of the research is to reveal the fretting behavior of UHMWPE and WS2/UHMWPE nanocomposites. It makes us realize the nano-WS2 had an effect on the fretting wear performance of UHMWPE. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2020-0151/

Comparison of gas plasma and gamma irradiation in air sterilization on the delamination wear of the ultra-high molecular weight polyethylene used in knee replacements

2000 ◽  
Vol 214 (3) ◽  
pp. 249-255 ◽  
Author(s):  
E A Reeves ◽  
D C Barton ◽  
D P FitzPatrick ◽  
J Fisher
Keyword(s):  
Molecular Weight ◽  
Gamma Irradiation ◽  
High Molecular Weight ◽  
Permanent Deformation ◽  
Ftir Analysis ◽  
Analysis Model ◽  
Gas Plasma ◽  
Knee Replacements ◽  
Gamma Irradiated ◽  
Ultra High Molecular Weight

Early failure of knee replacements is thought to be due to the combination of sterilization by gamma irradiation in air and the high cyclic stresses that they endure during use. Such failures are shown through delamination and permanent deformation of the ultra-high molecular weight polyethylene (UHMWPE) component. This study investigated whether gas plasma sterilization, as an alternative to gamma irradiation in air, would give better performance after ageing in a knee replacement using a metal pin on polymer plate wear test. Fourier transform infrared (FTIR) analysis was performed on the components to assess oxidation levels and a finite element stress analysis model is presented to estimate strain at failure in the UHMWPE. Delamination occurred in the majority of the gamma-irradiated plates but did not occur in any of the gas-plasma-sterilized plates. The FTIR analysis showed that the plates gamma irradiated in air were highly oxidized when compared with the gas-plasma-sterilized plates. Plastic strain at failure was determined for the gamma-irradiated plates and found to be less than 2.4-14 per cent.

scholarly journals Improved wear performance of ultra high molecular weight polyethylene coated with hydrogenated diamond like carbon

Wear ◽  
2010 ◽  
Vol 269 (5-6) ◽  
pp. 458-465 ◽  
Author(s):  
J.A. Puértolas ◽  
V. Martínez-Nogués ◽  
M.J. Martínez-Morlanes ◽  
M.D. Mariscal ◽  
F.J. Medel ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Diamond Like Carbon ◽  
Wear Performance ◽  
Ultra High Molecular Weight
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