Influence of chromium concentration and partial crystallization on the corrosion resistance of FeCrNiB amorphous alloys

Autor(es)

Berger, J. E. ^[1] ; Jorge Jr, A. M. ; Koga, G. Y. ^[2] ; Roche, V. ^[3] ; Kiminami, C. S. ^[2] ; Bolfarini, C. ^[2] ; Botta, W. J. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Programa Posgrad Ciencia & Engn Mat, Rod Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[2] Jorge Jr, Jr., A. M., Univ Fed Sao Carlos, Dept Engn Mat, Rod Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Savoie Mt Blanc, Univ Grenoble Alpes, CNRS, Grenoble INP, LEPMI, F-38000 Grenoble - France

• Tipo de documento: Artigo de Revisão
• Fonte: MATERIALS CHARACTERIZATION; v. 179, SEP 2021.
• Citações Web of Science: 0

Resumo

The influence of chromium concentration and partial crystallization on the corrosion resistance of the FeCrNiB amorphous alloys was investigated. The samples were produced by melt-spinning equipment. Vacuum heat treatments were used for partial and total crystallization. The study methods used were: X-ray diffraction, differential scanning calorimetry, transmission electron microscopy, and electrochemical tests in high salt concentration media. The results revealed that the concentration of chromium in FeCrNiB amorphous alloys could be reduced significantly, still providing passive film stability. They also show that partial crystallization of FeCrNiB alloys may not be deleterious to the corrosion properties, opening important possibilities for the development of high-performance coatings. (AU)

• Processo FAPESP: 17/21114-5 - Estudo e caracterização da formação de fase e estabilidade em uma liga de alta entropia AlCoCrFeNiB0.1
• Beneficiário: Vítor Ramos Ferrari
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Iniciação Científica
• Processo FAPESP: 16/12601-7 - Efeito da taxa de resfriamento na microestrutura de ligas de alta entropia do sistema AlxCoFeCrNiBy
• Beneficiário: Vítor Ramos Ferrari
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 13/05987-8 - Processamento e caracterização de ligas metálicas amorfas, metaestáveis e nano-estruturadas
• Beneficiário: Claudio Shyinti Kiminami
• Modalidade de apoio: Auxílio à Pesquisa - Temático