Effect of Mo Addition on Corrosion Behavior of High-Entropy Alloys CoCrFeNiMo_x in Aqueous Environments
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摘要
The corrosion behavior of CoCrFeNiMo_x alloys was investigated in aqueous environments, NaCl and H_2SO_4 solutions,respectively, to simulate typical neutral and acidic conditions. The cyclic polarization curves in NaCl and the potentiodynamic curves in H_2SO_4 clearly reveal the beneficial effects of Mo and the detrimental effect of σ-phase on the corrosion resistance. The X-ray photoelectron spectroscopy results of CoCrFeNiMo_x alloys in H_2SO_4 solution indicate that Cr and Mo predominate the corroded surface of the alloys, where Mo primarily exists in the form of MoO_3.
The corrosion behavior of CoCrFeNiMo_x alloys was investigated in aqueous environments, NaCl and H_2SO_4 solutions,respectively, to simulate typical neutral and acidic conditions. The cyclic polarization curves in NaCl and the potentiodynamic curves in H_2SO_4 clearly reveal the beneficial effects of Mo and the detrimental effect of σ-phase on the corrosion resistance. The X-ray photoelectron spectroscopy results of CoCrFeNiMo_x alloys in H_2SO_4 solution indicate that Cr and Mo predominate the corroded surface of the alloys, where Mo primarily exists in the form of MoO_3.
The corrosion behavior of CoCrFeNiMo_x alloys was investigated in aqueous environments, NaCl and H_2SO_4 solutions,respectively, to simulate typical neutral and acidic conditions. The cyclic polarization curves in NaCl and the potentiodynamic curves in H_2SO_4 clearly reveal the beneficial effects of Mo and the detrimental effect of σ-phase on the corrosion resistance. The X-ray photoelectron spectroscopy results of CoCrFeNiMo_x alloys in H_2SO_4 solution indicate that Cr and Mo predominate the corroded surface of the alloys, where Mo primarily exists in the form of MoO_3.
引文
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[68]D.Zingg,L.E.Makovsky,R.Tischer,F.R.Brown,D.M.Hercules,J.Phys.Chem.84,2898(1980)
[69]H.Yao,R.Baird,H.Gandhi,J.Catal.84,8(1983)
[70]J.Simmons,Mater.Sci.Eng.A 207,159(1996)
[71]J.O.Nilsson,Mater.Sci.Technol.8,685(1992)
[72]D.Y.Kobayashi,S.Wolynec,Mater.Res.2,239(1999)
[73]X.H.Zhao,Z.Q.Bai,Y.R.Feng,A.Q.Fu,Appl.Mech.Mater.184,1038(2002)
[74]J.Michalska,M.Sozan′ska,Mater.Charact.56,355(2006)
[75]H.M.Ezuber,A.Houd,F.Shawesh,Desalination 207,268(2007)
[76]J.Xu,C.Zhuo,J.Tao,S.Jiang,Appl.Surf.Sci.255,2688(2008)
[77]K.Adhe,V.Kain,K.Madangopal,H.Gadiyar,J.Mater.Eng.Perform.5,500(1996)