Comparative microstructural and corrosion development of VCrNiCoFeCu equiatomic multicomponent alloy produced by induction melting and spark plasma sintering

E-MRS Fall Symposium I: Solutions for Critical Raw Materials Under Extreme Conditions

Fazakas, E.^1,7 ; Heczel, A.^1,2 ; Molnár, D.^3,4 ; Varga, B.^5 ; Zadorozhnyy, V.^6 ; Vida, A.^1,2,7

Bay Zoltán Nonprofit Ltd. for Applied Research, Engineering Division, Budapest, Hungary^1

Institute of Materials Physics, Eötvös University, Pázmány P. stny 1/A, Budapest

H-1117, Hungary^2

Materials Science Group, Dalarna University, Falun

791 88, Sweden^3

Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology, Stockholm

SE-100 44, Sweden^4

Transilvania University of Brasov, Bulevardul Eroilor 29, Braov

500036, Romania^5

National University of Science and Technology MISIS, Leninsky prosp., 4, Moscow

119049, Russia^6

Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, P.O. Box 49, Budapest

H-1525, Hungary^7

关键词: 3.5% nacl solutions;    Corrosion behavior;    High entropy alloys;    Multi-component alloy;    Polarization curves;    Potentiodynamic polarization measurements;    Production methods;    Salty environments;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/329/1/012016/pdf
DOI  :  10.1088/1757-899X/329/1/012016

来源: IOP

【 摘 要 】

The present study focuses on the corrosion behavior of a single-phase FCC high entropy alloy (VCrNiCoFeCu) casted by two different methods: induction melting and spark plasma sintering. The corrosion resistance has been evaluated using immersion tests in 3.5% NaCl solution, the potentiodynamic polarization measurements and the results are compared how is dependent the corrosion rate as a function of the production methods. Our results show that induction melted sample is stable in salty environment. On the other hand, based on the changes of polarization curves, there must be an evolution of oxide films on the SPSed sample until reaching the stable oxide layer.