Structural Features and Corrosion Resistance of Fe66Cr10Nb5B19 Metallic Glass Coatings Obtained by Detonation Spraying

Autor(es):Mostrar menos -

Kuchumova, Ivanna D. ^{[1, 2]} ; Eryomina, Marina A. ^[3] ; Lyalina, V, Natalia ; Dudina, V, Dina ; Batraev, Igor S. ^[4] ; Ulianitsky, Vladimir Yu ^[4] ; Shtertser, Alexandr A. ^[4] ; Cherkasova, Nina Yu ^[5] ; Ruktuev, Alexey A. ^[5] ; Ukhina, V, Arina ; Borisenko, Tatiana A. ^[6] ; Koga, Guilherme Yuuki ^[7] ; Kiminami, Claudio Shyint ^[7] ; Jorge, Jr., Alberto Moreira ^{[7, 8, 9]}

Afiliação do(s) autor(es)

^[1] Novosibirsk State Tech Univ, K Marx Ave 20, Novosibirsk 630073 - Russia

^[2] Russian Acad Sci, Lavrentyev Inst Hydrodynam, Siberian Branch, Lavrentyev Ave 15, Novosibirsk 630090 - Russia

^[3] V, Russian Acad Sci, Udmurt Fed Res Ctr, Ural Branch, T Baramzinoy Str 34, Izhevsk 426067 - Russia

^[4] Dudina, Dina, V, Russian Acad Sci, Lavrentyev Inst Hydrodynam, Siberian Branch, Lavrentyev Ave 15, Novosibirsk 630090 - Russia

^[5] Dudina, Dina, V, Novosibirsk State Tech Univ, K Marx Ave 20, Novosibirsk 630073 - Russia

^[6] Ukhina, Arina, V, Dudina, Dina, V, Russian Acad Sci, Inst Solid State Chem & Mechanochem, Siberian Branch, Kutateladze Str 18, Novosibirsk 630128 - Russia

^[7] Univ Fed Sao Carlos, Dept Mat Sci & Engn, Via Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[8] Univ Grenoble Alpes, Univ Savoie Mt Blanc, Lab Electrochim & Physicochim Mat Interfaces, Ctr Natl Rech Sci, Grenoble INP, F-38000 Grenoble - France

^[9] Univ Grenoble Alpes, Sci & Ingn Mat & Proc, Ctr Natl Rech Sci, Grenoble INP, F-38000 Grenoble - France

• Tipo de documento: Artigo Científico
• Fonte: Journal of Materials Engineering and Performance; v. 31, n. 1 AUG 2021.
• Citações Web of Science: 0

Resumo

In the present work, Fe66Cr10Nb5B19 metallic glass coatings deposited by detonation spraying (DS) on carbon steel substrates were structurally characterized and tested in 3.5 wt.% NaCl solutions with pH values of 3.0, 5.5, and 10.0 under potentiodynamic polarization conditions. The coatings had low porosity (2.9-4.5%) and showed a predominantly amorphous structure. The concentration of an amorphous phase in the detonation coatings was 97.5-99.5 wt.%. Such high concentrations were not observed in thermally sprayed Fe-Cr-Nb-B coatings obtained by other research groups. Under the test conditions, the coatings exhibited low corrosion current densities (of the order of 10(-6) A cm(-2)) and low passive current densities (below 10(-3) A cm(-2)) while showing extended passive regions (stable within 1.5 V from the corrosion potential). The Fe66Cr10Nb5B19 coatings produced by DS showed a much better corrosion resistance than the carbon steel substrate. Furthermore, the corrosion resistance of the Fe66Cr10Nb5B19 DS coatings was superior to that of flame-sprayed or high-velocity oxygen fuel-sprayed Fe-Cr-Nb-B coatings reported to date. These results open new prospects for the use of affordable and Cr-lean Fe-Cr-Nb-B glassy coatings for carbon steel protection, where chloride-induced corrosion is the major degradation risk, such as metallic components for marine applications. (AU)

• 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