Electrodeposition of high entropy FeCoCrNiMn coating on SAE 1020
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2024
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BRAZIL MRS MEETING, 22nd
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Resumo
High entropy alloys (HEA) represent a relatively new class of metallic materials. They are
composed of multiple components, without a predominance of elements, in an equiatomic
form of five or more elements, with atomic concentrations between 5 and 35%. They present
a distorted crystal structure and a combination of characteristics that affect their structure
and functionality. These alloys exhibit excellent mechanical properties, such as high
strength, hardness, wear and compression resistance, and chemical properties, including
corrosion resistance. From the point of view of practical engineering applications, the and
cost of components manufactured with HEA and produced by conventional casting methods
are still considered a barrier. In this sense, coatings based on high entropy alloys have been
gaining prominence in the scientific scenario to improve surface characteristics of
conventional metallic alloys in a variety of applications, as resistance to corrosion and wear,
when applied to low-cost metallic substrates, such as carbon steels and aluminum alloys.
The electrodeposition process is considered advantageous in relation to the cost of
equipment necessary for its execution and a more precise adjustment of the deposition
conditions. In this study FeCoCrNiMn HEA coatings were electrodeposited on SAE 1020
steel. Process parameters as concentration of elements in the electrolyte, current-voltage
values and process time of 15 and 30 minutes as well as substrate surface finish, were
evaluated. The coatings obtained were characterized by X-ray diffraction, scanning electron
microscopy and spectroscopy of dispersive energy. The electrochemical behavior in a 3.5
wt% NaCl aqueous solution was evaluated by the techniques of impedance spectroscopy and
linear polarization. The results show the formation of a homogeneous coating on the steel
surface and good corrosion resistance.
Como referenciar
OLIVEIRA, LEANDRO da S.; COTINHO, SAMUEL P.; SANTOS, DAVI R. dos; GODOI, CAMILA; CORREA, OLANDIR V.; PILLIS, MARINA F. Electrodeposition of high entropy FeCoCrNiMn coating on SAE 1020. In: BRAZIL MRS MEETING, 22nd, September 29 - October 3, 2024, Santos, SP. Abstract... São Carlos, SP: Aptor Software, 2024. p. 1323-1323. Disponível em: https://repositorio.ipen.br/handle/123456789/48935. 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.