The influence of concave dimples on the metallic counterface on the wear of ultra-high molecular weight polyethylene

被引：13

作者：

Zhou, Xincong ^{[1
]}

Galvin, Alison L. ^{[2
]}

Jin, Zhongmin ^{[2
]}

Yan, Xinping ^{[1
]}

Fisher, J. ^{[2
]}

机构：

[1] Wuhan Univ Technol, Reliabil Engn Inst, Sch Energy & Power Engn, Wuhan 430063, Peoples R China

[2] Univ Leeds, Sch Mech Engn, Inst Med & Biol Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY | 2012年 / 226卷 / J6期

基金：

英国工程与自然科学研究理事会;

关键词：

UHMWPE; hip; concave dimples; wear; ARTIFICIAL JOINTS; REPLACEMENT; RESISTANCE; FRICTION; SURFACE;

D O I：

10.1177/1350650111425439

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The aims of this study were to investigate how the dimples on a metallic counterface affect the wear rate of ultra-high molecular weight polyethylene (UHMWPE) in a multi-directional reciprocating pin-on-plate machine. The plates were high nitrogen stainless steel, representing the femoral head material. The pins used in this study were of ultra-high molecular weight polyethylene GUR 1120, which represents the material used in an acetabular cup. Three different cases were investigated: a smooth surface without dimples as a reference case, a surface with medium dimples with an average valley of 2.3 mu m and a surface with large dimples with an average valley of 5.9 mu m. It was found that all the dimples investigated did not improve the lubrication, but instead increased the surface roughness; consequently, the wear of UHWMPE was slightly increased.

引用

页码：455 / 462

页数：8

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