Plasma transferred arc cladding process was used to fabricate (NiCoFeCrCu)95B5 multielement alloy coating. The microstructure and electrochemical behaviours of the coating were investigated. Results show that the precipitation of intermetallic compounds in the coating is effectively inhibited by the rapid solidification process. The coating has simple ordered body centred cubic and face centred cubic solid solution phases. The as prepared coating has excellent corrosion resistance in hydrochloric acid solution. The corresponding corrosion current and corrosion rates are effectively reduced, and the electrochemical impedance is significantly improved referenced to those of the 304 stainless steel.
YehJW, ChenSK., LinSJ, GanJT, ChinTS, ShunTT, TsauCH and ChangSY: ‘Nanostructured high-entropy alloys with multiple principal elements: novel alloy design comcepts and outcomes’, Adv. Eng. Mater., 2004, 6, 299–303.
2.
ZhuJM, FuHM, ZhangHF, WangAM, LiH and HuZQ: ‘Microstructures and compressive properties of multicomponent AlCoCrFeNiMox alloys’, Mater. Sci. Eng. A, 2010, A527, 6975–6979.
3.
ChuangMH, TsaiMH, WangWR, LinSJ and YehJW: ‘Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Tiy high-entropy alloys’, Acta Mater., 2011, 59, 6308–6317.
4.
HsuCY, JuanCC, WangWR, SheuTS, YehJW and ChenSK: ‘On the superior hot hardness and softening resistance of AlCoCrxFeMo0.5Ni high-entropy alloys’, Mater. Sci. Eng. A, 2011, A528, 3581–3588.
5.
SenkovON, WilksGB, ScottJM and MiracleDB: ‘Mechanical properties of Nb25Mo25Ta25W25 and V20Nb20Mo20Ta20W20 refractory high entropy alloys’, Intermetallics, 2011, 19, 698–706.
6.
TsaiMH, WangCW, TsaiCW, ShenWJ, YehJW and GanJY: ‘Thermal stability and performance of NbSiTaTiZr high-entropy alloy barrier for copper metallization’, J. Electrochem. Soc., 2011, 158, H1161–H1165.
7.
ChenJH, ChenPN, LinCM, ChangCM, ChangYY and WuW: ‘Characterization of multi-element alloy claddings manufactured by the tungsten inert gas process’, Surf. Coat. Technol., 2009, 203, 2983–2988.
8.
ZhangH, PanY and HeYZ: ‘Synthesis and characterization of FeCoNiCrCu high-entropy alloy coating by laser cladding’, Mater. Des., 2011, 32, 1910.
9.
ZhangH, PanY, HeYZ and JiaoHS: ‘Microstructure and properties of 6FeNiCoSiCrAlTi high-entropy alloy coating prepared by laser cladding’, Appl. Surf. Sci., 2011, 257, 2259–2263.
10.
YeXY, MaMX, CaoYX, LiuWJ, YeXH and GuY: ‘The property research on high-entropy alloy AlxFeCoNiCuCr coating by laser cladding’, Physics Procedia, 2011, 12, 303–312.
11.
QiuXW, ZhangYP, HeL and LiuCG: ‘Microstructure and corrosion resistance of AlCrFeCuCo high entropy alloy’, J. Alloys. Compd, 2013, 549, 195–199.
12.
De BoerFR, BoomR, MattensWCM, MiedemaAR and NiessenAK: ‘Cohesion in metals’, 165–199; 1989, The Netherlands, Elsevier Science Publishing Company Inc.
13.
InoueA, ZhangT and MasumotoT: ‘Al–La–Ni amorphous alloy with a wide supercooled liquid region’, Mater. Trans. JIM, 1989, 30, 965–972.
14.
PoonSJ, ShifletGJ, GuoFQ and PonnambalamV: ‘Glass formability of ferrous- and aluminum-based structural metallic alloys’, J. Non-Cryst. Solids, 2003, 317, 1–9.
15.
BoettingerWJ and AzizMJ: ‘Theory for the trapping of disorder and solute in intermetallic phases by rapid solidification’, Acta Metall., 1989, 37, 3379–3391.
16.
JonesDA: ‘Principals and prevention of corrosion’, 2nd edn; 1996, Upper Saddle River, NJ, Prentice Hall.
17.
ChenYY, DuvalT, HungUD, YehJW and ShihHC: ‘Microstructure and electrochemical properties of high entropy alloys—a comparison with type-304 stainless steel’, Corros. Sci., 2005, 47, 2257–2279.
18.
PebereN, RieraC and DabosiF: ‘Investigation of magnesium corrosion in aerated sodium sulfate solution by electrochemical impedance spectroscopy’, Electrochim. Acta, 1990, 35, 555–561.
19.
CaoC: ‘On the impedance plane displays for irreversible electrode reactions based on the stability conditions of the steady-state—II. Two state variables besides electrode potential’, Electrochim. Acta, 1990, 35, 837–844.
20.
CaoC: ‘On the impedance plane displays for irreversible electrode reactions based on the stability conditions of the steady-state—I. One state variable besides electrode potential’, Electrochim. Acta, 1990, 35, 831–836.
21.
de Freitas Cunha LinsV, de Andrade ReisGF, de AraujoCR and MatencioT: ‘Electrochemical impedance spectroscopy and linear polarization applied to evaluation of porosity of phosphate conversion coatings on electrogalvanized steels’, Appl. Surf. Sci., 2006, 253, 2875–2884.
