Fretting corrosion characteristics of polished collarless tapered stems in a simulated biological environment

被引：15

作者：

Bryant, Michael ^{[1
]}

Farrar, Richard ^{[2
]}

Freeman, Robert ^{[2
]}

Brummitt, Ken ^{[2
]}

Neville, Anne ^{[1
]}

机构：

[1] Univ Leeds, Inst Engn Thermofluids Surfaces & Interfaces, Leeds LS2 9JT, W Yorkshire, England

[2] DePuy Int, Leeds, W Yorkshire, England

来源：

TRIBOLOGY INTERNATIONAL | 2013年 / 65卷

关键词：

Fretting-corrosion; Biomedical; Femoral stem; Depassivation; TOTAL HIP-REPLACEMENT; IONS IN-VITRO; ORTHOPEDIC IMPLANTS; SURFACE FINISH; CHROMIUM IONS; FEMORAL STEM; METAL; COBALT; APOPTOSIS; STRENGTH;

D O I：

10.1016/j.triboint.2013.01.024

中图分类号：

TH [机械、仪表工业];

学科分类号：

120111 [工业工程];

摘要：

The role fretting-corrosion plays on the degradation and formation of debris within the stem cement interface was investigated. Electrochemical measurements of potential and polarisation resistance, along with solution mass spectroscopy were employed. Optical, Scanning Electron and Transmission Electron Microscopy with Energy Dispersive X-Ray Spectroscopy techniques were utilised to observe surface morphology after fretting-corrosion tests. Electrochemical measurements indicated dynamic loading resulted in de-passivation of the metallic surface. Solution mass spectroscopy indicted high concentrations of cobalt were released from the interface, accounting for 94% of all metallic ions released into the environment. Detailed imagery of fretting-corrosion product indicated a chromium and oxygen layer on the metallic and bone cement surface owing to the electrochemical stability of species released as a result of fretting-corrosion. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：105 / 112

页数：8

共 36 条

[1]

[Anonymous], 1995, An introduction to metallurgy

[2]

The basic science of periprosthetic osteolysis [J].