Study on torsional fretting behavior of UHMWPE

Torsional fretting tests of UHMWPE against titanium alloy ball (TC4) had been carried out. A frictional torque–angular displacement ( T– θ) curve was used to analyze the kinetics behaviors of torsional fretting mode. The wear morphology and damage mechanisms of UHMWPE were studied based on examinati...

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Veröffentlicht in:	Applied surface science 2008-11, Vol.255 (2), p.616-618
Hauptverfasser:	Yu, Jia, Cai, Zhenbing, Zhu, Minhao, Qu, Shuxin, Zhou, Zhongrong
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Fretting damage Fretting wear Physics Torsional fretting UHMWPE
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Zusammenfassung:	Torsional fretting tests of UHMWPE against titanium alloy ball (TC4) had been carried out. A frictional torque–angular displacement ( T– θ) curve was used to analyze the kinetics behaviors of torsional fretting mode. The wear morphology and damage mechanisms of UHMWPE were studied based on examinations by scanning electron microscopy (SEM). It is found that the contact stiffness and friction-dissipated energy initially rise and then gradually reach a steady state. The worn surface is characterized by adhesion in the centre zone, while in the outer annulus, ripples, ploughs and delamination appeared. In addition, a transfer film is found on the surface of titanium alloy ball.
ISSN:	0169-4332 1873-5584
DOI:	10.1016/j.apsusc.2008.06.179