Characterization of steady-state wear in all-alumina THR to 20 Mc

Characterization of steady-state wear in all-alumina THR to 20 Mc

The steady-state ceramic wear-rates was characterized to 20 million cycles test duration for the all-alumina total hip replacement (THR) as a follow-up to an earlier simulator study. Scanning electron microscopy (SEM) studies at 20 Mc showed that the original machine tracks were polished off and cra...

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Bibliographische Detailangaben
Hauptverfasser: Oonishi, H, Clarke, I C, Williams, P A, Shishido, T, Gustafson, A
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Alumina
Ceramic materials
Coating techniques
Scanning electron microscopy
Simulators
Wear of materials
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Zusammenfassung:The steady-state ceramic wear-rates was characterized to 20 million cycles test duration for the all-alumina total hip replacement (THR) as a follow-up to an earlier simulator study. Scanning electron microscopy (SEM) studies at 20 Mc showed that the original machine tracks were polished off and craters representing regions of grain-pullout dominated the major wear zone. It was found that a duration of 5-6 Mc was not adequate to define steady-state wear-rates of Al sub(2)O sub(3).
ISSN:1013-9826