The acting wear mechanisms on metal-on-metal hip joint bearings: in vitro results

Wimmer, Matthias; Loos, Joachim; Nassutt, R.; Heitkemper, Margaret; Fischer, Alfons

doi:10.1016/s0043-1648(01)00654-8

Cited by 184 publications

(149 citation statements)

References 22 publications

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“…Thus, any difference of acting mechanisms should be visible by alterations of the wear appearances. Any organic layer of this type is accompanied by a distinct increase of the C-peak visible by EDS analyses [7][8][9]20,36]. Thus, the cleaning results of the LiquiNox treatment could be verified by EDS and were followed by the analyses of the wear appearances.…”

Section: Wear Appearancesmentioning

confidence: 89%

“…Due to the fact that no indications of any torn-off carbides from the head have been found, microcracking as a submechanism of abrasion [37] can be ruled out as in an earlier investigation [20]. Thus, microcutting and microploughing should prevail.…”

Section: Wear Mechanisms and Tribological Behaviormentioning

confidence: 96%

“…Polished concave pins of defined clearance are rotated and slid against a head under bovine serum lubrication (BCS, SigmaAldrich, St. Louis, MO, USA) at 37 °C (Thermostat Julabo F25, Julabo Labortechnik GmbH, Seelbach, Germany) by means of a pin-on-ball wear test [19,20]. The interface motion is generated by sine-wave type axial oscillation of both the pins and the ball.…”

Section: Laboratory Tribosystem and Analysesmentioning

confidence: 99%

“…Three sub-mechanisms are known today: the thermally driven and tribologically accelerated tribooxidation in gaseous media [38], tribocorrosion in liquid media [39] and mechanical mixing of solids [40]. Under the given conditions, the contact temperatures hardly exceed 60˝C [20] and any weight gain by oxide layers can be neglected, while the tribologically accelerated corrosive attack in proteinaceous medium would have brought about weight loss [41]. Thus, mechanical mixing should prevail.…”

Section: Wear Mechanisms and Tribological Behaviormentioning

confidence: 99%

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On the Growth Rate of Tribomaterial in Bovine Serum Lubricated Sliding Contacts

et al. 2016

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Considering total hip arthroplasty, so-called tribolayers (aka tribomaterial), consist of carbonaceous material from the periprosthetic joint fluid or bovine serum mixed with nanometer size metal and oxide wear particles. Currently, its growth sequence and rate are unknown. Thus, smooth surfaces of low-Carbon (LC-) vs. high-Carbon (HC-)CoCrMo (Cobalt-Chromium-Molybdenum) alloys have been worn in a conforming contact under bovine serum lubrication by means of a pin-on-ball wear tester. These tests were interrupted at certain numbers of cycles in order to weigh the specimens, characterize the topography, and investigate the wear appearances. In addition, after cleaning in ethanol and anionic detergent, before-and-after comparison rendered the weight of the tribomaterial. This revealed that, during run-in, the specimens gained weight by generating tribomaterial. Afterwards the loss of material surpassed the generation of new tribomaterial and a steady weight-loss was measured. Topography measurements were used as input data for contact mechanics calculations. Apparently the incipient, locally high contact stresses accelerated tribochemical reactions. After run-in, the contact situation changes and leads to a much smaller generation rate. This paper provides information about the growth sequence and rate of such tribomaterial formation. It further highlights the significance of highly localized contact stress as an important factor for tribomaterial generation.

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Section: Wear Appearancesmentioning

confidence: 89%

Section: Wear Mechanisms and Tribological Behaviormentioning

confidence: 96%

Section: Laboratory Tribosystem and Analysesmentioning

confidence: 99%

Section: Wear Mechanisms and Tribological Behaviormentioning

confidence: 99%

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On the Growth Rate of Tribomaterial in Bovine Serum Lubricated Sliding Contacts

et al. 2016

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“…A chromium coated crystal was used in QCM to represent the CoCrMo alloy used in rolling tests. This crystal has a surface layer of hydrophilic chromium oxide Cr 2 O 3 , which correspond to the primary oxide found on the surface of CoCrMo implants [28,29].…”

Section: This Implies That Interactions Among Proteins In Bcs Impact mentioning

confidence: 99%

Synovial Fluid Lubrication: The Effect of Protein Interactions on Adsorbed and Lubricating Films

et al. 2015

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Biomaterials, Corrosion and Wear of

Narayan

Marek

Jin

2006

Encyclopedia of Medical Devices and Instrumentation

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Many materials suffer degradation with time when exposed to aggressive chemical environments within the human body. In metallic biomaterials, degradation results from electrochemical corrosion. Ceramic and polymeric biomaterials may undergo physical or chemical deterioration processes. In addition, mechanical forces may act to increase damage by wear, abrasion, or environment‐induced cracking processes.

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The acting wear mechanisms on metal-on-metal hip joint bearings: in vitro results

Cited by 184 publications

References 22 publications

On the Growth Rate of Tribomaterial in Bovine Serum Lubricated Sliding Contacts

On the Growth Rate of Tribomaterial in Bovine Serum Lubricated Sliding Contacts

Synovial Fluid Lubrication: The Effect of Protein Interactions on Adsorbed and Lubricating Films

Biomaterials, Corrosion and Wear of

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