Tribological evaluation of CoCrMo alloy for biomedical applications
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2019
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BRAZIL MRS MEETING, 18th
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Resumo
The tribological behavior of the CoCrMo alloy was evaluated in the air in a
nanotribometer. The chemical composition, microstructure and mechanical
properties of CoCrMo alloys makes them potential materials for use as
implantable medical or dental devices [1]. This work has a specific focus on
covering the possible in vitro wear modes seen on metal-on metal surfaces. Ballcratering
wear test was carried out for 10 min with a solid sphere of WC as
counterbody, at a frequency of 75 rpm [2]. The CoCrMo samples’ citotoxicity was
analyzed in order to determine if the alloy casting process and its surface
finishing, current used in industry, affects the biomaterial’s biocompatibility. All
tested surfaces were prepared according to the recommendations for clinical use.
The results address the potential detrimental effects of hard particles in vivo such
as increased wear rates (debris generation), which is greatly influenced by the
normal force, and corrosion (metal-ion release). None sample was considered
cytotoxic.
Como referenciar
PIERETTI, EURICO F.; NEVES, MAURICIO M. das; CORREA, OLANDIR V.; ANTUNES, R.A. Tribological evaluation of CoCrMo alloy for biomedical applications. In: BRAZIL MRS MEETING, 18th, September 22-26, 2019, Balneário Camburiú, SC. Abstract... São Carlos, SP: Aptor Software, 2019. p. 1836-1836. Disponível em: http://repositorio.ipen.br/handle/123456789/31052. Acesso em: 25 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.