Novel CuxFeMnNiSnTi high entropy alloys: Microstructure, surface chemistry, and corrosion resistance

Autor(es)

da Silva, Leandro Santos ; Ferreira, Tiago Luiz ; Lopes de Oliveira, Mara Cristina ; Antunes, Renato Altobelli ; Galdino da Silva, Ricardo Alexandre

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 26, p. 16-pg., 2023-09-06.

Resumo

CuxFeMnNiSnTi alloys were prepared by electric arc melting. The microstructure was examined by scanning electron microscopy and the crystalline phases were assessed by X-ray diffractometry. The composition of the surface oxide film was analyzed by X-ray photoelectron spectroscopy. The corrosion resistance was studied by electrochemical impedance spectroscopy and potentiodynamic polarization. Depending on the copper content, the microstructures were comprised of (Cu,Mn,Ni)3Sn, Ti(Ni,Fe)2Sn, and (Fe,Mn)2Ti. The oxide films consisted of a complex mixture of different oxide phases. The corrosion resistance was affected by the copper content and was mainly influenced by the alloy microstructure than the composition of the oxide film.(c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). (AU)

• Processo FAPESP: 18/26267-7 - Estudo de ligas de alta entropia à base de FeNiCuMnTiSn para aplicação em motores termomagnéticos
• Beneficiário: Leandro Santos da Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 22/04262-9 - Desenvolvimento e caracterização físico-química de ligas multicomponentes
• Beneficiário: Ricardo Alexandre Galdino da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular