Bioactivity study of Co-Cr alloys doped with tantalum for biomedical applications
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2019
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BRAZIL MRS MEETING, 18th
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Resumo
Co-Cr alloys are well known because of its high wear resistance, mechanical
strength and corrosion resistance due to the chromium oxide passive layer
formation that protects the material surface [1].The addition of alloying elements,
particularly Mo and W, improve the properties of Co-Cr bioalloys, although these
materials can still be improved to meet the requirements for a biomaterial.Thus,
considering that tantalum is a bioactive metal, it can be an interesting option to
improve the biocompatibility properties of these alloys[2].The present study aims
the synthesis and in vitro evaluation bioactivity of Co-Cr alloy doped with
tantalum.The synthetized alloys were submitted to a surface treatment and
subsequentlyimmersed in Simulated Body Fluid (SBF) for 28 days. The samples
bioactivity was evaluated by using X- ray Diffraction (DRX), Scanning Electron
Microscopy (SEM), Dispersive Energy Spectroscopy (EDS) and Atomic Force
Microscopy (AFM) techniques. X- ray diffraction analysisin the SBF immersed
samples shown a small intensity peak characteristicof hydroxyapatite while MEV
and EDS results revealeda surface structure with the presence of P, Mg, Ca and
Oelements. The grain growth dynamics on the samples surfaces was observed by
using AFM measurements.
Como referenciar
SANTOS, EMANUELLA C. dos; BATISTA, BEATRIZ da S.; LIMA, RUANA C.; ALENCAR, LUCIANA M.R.; SANTOS, ADENILSON O. dos; PEDROCHI, FRANCIANA; OTUBO, LARISSA; LANG, ROSSANO; SILVA, LUZELI M. da. Bioactivity study of Co-Cr alloys doped with tantalum for biomedical applications. In: BRAZIL MRS MEETING, 18th, September 22-26, 2019, Balneário Camburiú, SC. Abstract... São Carlos, SP: Aptor Software, 2019. p. 1017-1018. Disponível em: http://repositorio.ipen.br/handle/123456789/31033. Acesso em: 30 Dec 2025.
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.