Corrosion evaluation of an optical fiber laser treated stainless steel for biomedical applications
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2018
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BRAZILIAN MRS MEETING, 17th
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Resumo
The implant manufacturing process includes marking the final devices for their
identification, long-term quality control and traceability. Marking is carried out
after cleaning and prior to sterilization. These marks eventually can concentrate
stress leading to premature failure. The marked areas are defective regions that
affect the oxide layer formed on the biomaterials used for implants favoring the
onset of various corrosion forms, such as pitting, crevice or fatigue [1, 2]. This
study aims to evaluate the effect of an Yb optical fiber laser marking process on
the localized corrosion resistance of the austenitic stainless steel ISO 5832-1
samples. This is one of the most used materials for implants manufacturing. The
electrochemical behavior of the marked areas obtained by this method was
evaluated in a phosphate buffered solution (PBS) with pH of 7.4 and the results
were compared with non treated samples. All tested surfaces were prepared
according to the recommendations for clinical use. For localized corrosion
resistance evaluation, electrochemical tests as monitoring the open circuit
potential (OCP), electrochemical impedance spectroscopy (EIS), and cyclic
potentiodynamic polarization measurements were performed. The results showed
that the laser marks affects the protector characteristics of the biomaterial’s
passive film. Lower pitting resistance was associated to the laser marked areas,
because of its roughness changes.
Como referenciar
PIERETTI, EURICO; CORREA, OLANDIR V.; PILLIS, MARINA F.; NEVES, MAURICIO M. das. Corrosion evaluation of an optical fiber laser treated stainless steel for biomedical applications. In: BRAZILIAN MRS MEETING, 17th, September 16-20, 2018, Natal, RN. Abstract... São Carlos: Aptor Software, 2018. p. 604-604. Disponível em: http://repositorio.ipen.br/handle/123456789/30335. Acesso em: 12 Mar 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.