CoCrFeNi |
FCC |
-234 |
---- |
4.0 |
---- |
Electrolyte: 3.5 wt.% NaCl solution at RT |
17
17 Nascimento CB, Donatus U, Ríos CT, Antunes RA. Electronic properties of the passive films formed on CoCrFeNi and CoCrFeNiAl high entropy alloys in sodium chloride solution. Journal of Materials Research and Technology. 2020;9:13879-92.
-a
|
CoCrFeNiAl |
BCC + B2 (ordered BCC) |
-300 |
---- |
6.3 |
667 |
17
17 Nascimento CB, Donatus U, Ríos CT, Antunes RA. Electronic properties of the passive films formed on CoCrFeNi and CoCrFeNiAl high entropy alloys in sodium chloride solution. Journal of Materials Research and Technology. 2020;9:13879-92.
-b
|
Al0.3CoCrFeNi |
FCC |
-195 |
0.0835 |
1.24 |
460 |
Increasing Al content reduces the corrosion resistance (thicker, less stable passive film); Electrolyte: 3.5 wt.% NaCl solution at RT |
27
27 Shi Y, Yang B, Xie X, Brechtl J, Dahmen KA, Liaw PK. Corrosion of AlxCoCrFeNi high-entropy alloys: al-content and potential scan-rate dependent pitting behavior. Corros Sci. 2017;119:33-45.
|
CoCrFeNiMo0.4
|
FCC + Cr and Mo-rich sigma phase |
-261 |
0.082 |
16 |
948 |
Electrolyte: 3.5 wt.% NaCl solution at RT |
30
30 Shang X, Wang Z, Wu Q, Wang J, Li J, Yu J. Effect of Mo addition on corrosion behavior of high-entropy alloys CoCrFeNiMox in aqueous environments. Acta Metall Engl Lett. 2019;32:41-51.
|
FeCoNiCr0.5
|
FCC |
-319 |
2.36 |
---- |
453 |
Electrolyte: 3.5 wt.% NaCl solution at RT |
31
31 Chai W, Lu T, Pan Y. Corrosion behaviors of FeCoNiCrx (x = 0, 0,5, 1,0) multi-principal element alloys: Role of Cr-induced segregation. Intermetallics. 2020;116:106654.
|
AlCr2.5FeNi2Cu1.6
|
FCC + BCC |
-516 |
1.25 |
---- |
-21 |
Electrolyte: 3.5 wt.% NaCl solution at RT |
34
34 Yang S, Yu W, Liu T, Li C, Zhang Y, Qu Y. Effect of Cr content on corrosion behavior of AlCrxFeNi2Cu1.6 high entropy alloys. Mater Res Express. 2019;6:076501.
|
CoCrFeMnNi |
FCC |
-230 |
0.14 |
---- |
---- |
Electrolyte: 3.5 wt.% NaCl solution at RT |
37
37 Han Z, Ren W, Yang J, Tian A, Du Y, Liu G, et al. The corrosion behavior of ultra-fine grained CoNiFeCrMn high-entropy alloys. J Alloys Compd. 2020;816:152583.
|
Al2CrFeCoCuTiNi |
FCC + BCC |
-220 |
13 |
---- |
---- |
Increasing Ni contents reduced the corrosion resistance; Electrolyte: 3.5 wt.% NaCl solution at RT |
40
40 Qiu X-W, Liu C-G. Microstructure and properties of Al2CrFeCoCuTiNix high-entropy alloys prepared by laser cladding. J Alloys Compd. 2013;553:216-20.
-a
|
Al2CrFeCoCuTiNi2
|
FCC + BCC |
-500 |
67 |
---- |
---- |
40
40 Qiu X-W, Liu C-G. Microstructure and properties of Al2CrFeCoCuTiNix high-entropy alloys prepared by laser cladding. J Alloys Compd. 2013;553:216-20.
-b
|
Al2CrFeCo1.0CuNiTi |
---- |
-220 |
0.013 |
---- |
No passivity breakdown up to 1.2 VSCE
|
Laser-cladded coatings on Q235 steel substrate; Electrolyte: 3.5 wt.% NaCl solution at RT |
43
43 Qiu X-W. Corrosion behavior of Al2CrFeCoxCuNiTi high-entropy alloy coating in alkaline solution and salt solution. Results in Physics. 2019;12:1737-41.
-a
|
Al2CrFeCo1.5CuNiTi |
---- |
-510 |
0.074 |
---- |
43
43 Qiu X-W. Corrosion behavior of Al2CrFeCoxCuNiTi high-entropy alloy coating in alkaline solution and salt solution. Results in Physics. 2019;12:1737-41.
-b
|
Alloy composition |
Structure |
Ecorr (mVSCE) |
icorr (µA.cm-2) |
ipass (µA.cm-2) |
Epit (mVSCE) |
Additional comments |
Reference |
Co2CrCuFeMnNi |
Two FCC phases |
-787 |
6.95 |
---- |
19 |
Sintered alloy; the FCC phase with higher Co content is more resistant to corrosion; Electrolyte: 3.5 wt.% NaCl solution at RT |
44
44 Zhao R-F, Ben B, Cai B, Liu Z-X, Zhang G-P, Zhang J-J. Corrosion behavior of CoxCrCuFeMnNi high-entropy alloys prepared by hot pressing sintered in 3.5% NaCl solution. Results in Physics. 2019;15:102667.
|
CrMnFeCoNi |
FCC |
142.5 |
0.105 |
---- |
460 |
Cr-depleted interdendrites are the starting point for corrosion; Electrolyte: 3.5 wt.% NaCl solution at RT |
61
61 Ye Q, Feng K, Li Z, Lu F, Li R, Huang J, et al. Microstructure and corrosion properties of CrMnFeCoNi high entropy alloy coating. Appl Surf Sci. 2017;396:1420-6.
|
(CoCrFeNi)95Nb5
|
FCC |
-128 |
7.23 |
41.3 |
502 |
Plasma sprayed coating on Q235 steel substrate; Electrolyte: 3.5 wt.% NaCl solution at RT |
62
62 Wang W, Qi W, Xie L, Yang X, Li J, Zhang Y. Microstructure and corrosion behavior of (CoCrFeNi)95Nb5 high-entropy alloy coating fabricated by plasma spraying. Materials. 2019;12:694.
|
Al0.9CoCrFeNi |
FCC + BCC + B2 (ordered BCC) |
-216 |
0.093 |
---- |
164 |
Electrolyte: 3.5wt.% NaCl solution at RT |
63
63 Qiu Y, Thomas S, Fabijanic D, Barlow AJ, Fraser HL, Birbilis N. Microstructural evolution, electrochemical and corrosion properties of AlxCoCrFeNiTiy high entropy alloys. Mater Des. 2019;170:107698.
-a
|
Al0.9CoCrFeNiTi0.5
|
BCC + B2 (ordered BCC) + Fe-Cr sigma phase |
-347 |
0.310 |
---- |
184 |
63
63 Qiu Y, Thomas S, Fabijanic D, Barlow AJ, Fraser HL, Birbilis N. Microstructural evolution, electrochemical and corrosion properties of AlxCoCrFeNiTiy high entropy alloys. Mater Des. 2019;170:107698.
-b
|
CoCrFeNi2
|
FCC |
-290 |
0.129 |
---- |
320 |
Mo enrichment in the passive film reduces pitting corrosion susceptibility; Electrolyte: 3.5 wt.% NaCl solution at RT |
64
64 Rodriguez AA, Tylczak JH, Gao MC, Jablonski PD, Detrois M, Ziomek-Moroz M, et al. Effect of molybdenum on the corrosion behavior of high-entropy alloys CoCrFeNi2 and CoCrFeNi2Mo0.25 under sodium chloride aqueous solutions. Adv Mater Sci Eng. 2018;2018:3016304.
-a
|
CoCrFeNi2Mo0.25
|
FCC + HCP |
-260 |
0.125 |
---- |
910 |
64
64 Rodriguez AA, Tylczak JH, Gao MC, Jablonski PD, Detrois M, Ziomek-Moroz M, et al. Effect of molybdenum on the corrosion behavior of high-entropy alloys CoCrFeNi2 and CoCrFeNi2Mo0.25 under sodium chloride aqueous solutions. Adv Mater Sci Eng. 2018;2018:3016304.
-b
|
(Fe-Co-Ni)15(Al-Ti-Zr)85
|
FCC + amorphous phase |
-460 |
2.046 |
---- |
---- |
Multi-component films obtained by sputtering on Si substrate; Electrolyte: 3.5 wt.% NaCl solution at RT |
65
65 Wang H, Liu J, Xing Z, Ma G, Cui X, Jin G, et al. Microstructure and corrosion behaviour of AlCoFeNiTiZr high-entropy alloy films. Surf Eng. 2020;36(1):78-85.
-a
|
(Fe-Co-Ni)20(Al-Ti-Zr)80
|
FCC + amorphous phase |
-281 |
0.586 |
---- |
---- |
65
65 Wang H, Liu J, Xing Z, Ma G, Cui X, Jin G, et al. Microstructure and corrosion behaviour of AlCoFeNiTiZr high-entropy alloy films. Surf Eng. 2020;36(1):78-85.
-b
|
(Fe-Co-Ni)25(Al-Ti-Zr)75
|
FCC + amorphous phase |
-260 |
0.062 |
---- |
---- |
65
65 Wang H, Liu J, Xing Z, Ma G, Cui X, Jin G, et al. Microstructure and corrosion behaviour of AlCoFeNiTiZr high-entropy alloy films. Surf Eng. 2020;36(1):78-85.
-c
|
Alloy composition |
Structure |
Ecorr (mVSCE) |
icorr (µA.cm-2) |
ipass (µA.cm-2) |
Epit (mVSCE) |
Additional comments |
Reference
|
Al0.3Cr0.5FeCoNi |
FCC |
-185 |
0.1 |
---- |
350 |
Increasing the Cr content in the alloy, the FCC and BCC phases became enriched with Cr; Electrolyte: 3.5 wt.% NaCl solution at RT |
66
66 Yan X, Guo H, Wang W, Pang S, Wang Q, Liu Y, et al. 0.3CrxFeCoNi high-entropy alloys with high corrosion resistance and good mechanical properties. J Alloys Compd. 2021;860:158436.
-a
|
Al0.3Cr2FeCoNi |
FCC + BCC + B2 (ordered BCC) |
-99 |
0.01 |
---- |
No breakdown up to 2 VSCE
|
66
66 Yan X, Guo H, Wang W, Pang S, Wang Q, Liu Y, et al. 0.3CrxFeCoNi high-entropy alloys with high corrosion resistance and good mechanical properties. J Alloys Compd. 2021;860:158436.
-b
|
TiCrVNb0.5Al0.5
|
BCC |
-450 |
0.089 |
---- |
1950 |
Uniform distribution of elements without segregation; Electrolyte: 3.5 wt.% NaCl solution at RT |
67
67 Li M, Chen Q, Cui X, Peng X, Huang G. Evaluation of corrosion resistance of the single-phase light refractory high entropy alloy TiCrVNb0.5Al0.5 in chloride environment. J Alloys Compd. 2020;857:158278.
|
Al0.5CoCrFeNi |
FCC |
-570 |
0.17 |
---- |
130 |
As-cast condition; Electrolyte: 3.5 wt.% NaCl solution at RT |
68
68 Lin C, Tsai H. Evolution of microstructure, hardness, and corrosion properties of high-entropy Al0.5CoCrFeNi alloy. Intermetallics. 2011;19:288-94.
|
CoCrFeNiMo0.2
|
FCC |
-192 |
0.00184 |
---- |
827 |
Mo enhances passivity (passive film composition not shown); Electrolyte: 3.5 wt.% NaCl solution at RT |
69
69 Wang Q, Amar A, Jiang C, Luan H, Zhao S, Zhang H, et al. CoCrFeNiMo0.2 high entropy alloy by laser melting deposition: prospective material for low temperature and corrosion resistant applications. Intermetallics. 2020;119:106727.
|
(CoCrFeNi)98Mo2
|
FCC |
-191 |
0.07 |
---- |
---- |
Aging at 900 °C for 16 h, followed by water quenching; Co and Fe-rich dendrites; Cr and Mo-rich interdendrites; Electrolyte: 3.5 wt.% NaCl solution at RT |
70
70 Wang W, Wang J, Sun Z, Li J, Li L, Song X, et al. Effect of Mo and aging temperature on corrosion behavior of (CoCrFeNi)100-xMox high-entropy alloys. J Alloys Compd. 2020;812:152139.
-a
|
(CoCrFeNi)98Mo3
|
FCC + Mo-rich precipitates |
-194 |
0.22 |
---- |
---- |
70
70 Wang W, Wang J, Sun Z, Li J, Li L, Song X, et al. Effect of Mo and aging temperature on corrosion behavior of (CoCrFeNi)100-xMox high-entropy alloys. J Alloys Compd. 2020;812:152139.
-b
|
AlCoCrFeNiCu0.5
|
FCC + BCC |
-282 |
1.77 |
---- |
---- |
Equiaxed grains (grain size smaller than 30 µm); no Cu segregation in grain boundaries; Electrolyte: artificial seawater |
71
71 Yu Y, Xu N, Zhu S, Qiao Z, Zhang J, Yang J, et al. A novel Cu-coped high entropy alloy with excellent comprehensive performances for marine application. J Mater Sci Technol. 2021;69:48-59.
|
Alloy composition |
Structure |
Ecorr (mVSCE) |
icorr (µA.cm-2) |
ipass (µA.cm-2) |
Epit (mVSCE) |
Additional comments |
Reference |
CoCrFeNi |
FCC |
-238 |
---- |
---- |
575 |
Sn increases the corrosion resistance of CoCrFeNi, whereas Al and Cu decrease; Electrolyte: 3.5 wt.% NaCl solution at RT |
72
72 Muangtong P, Rodchanarowan A, Chaysuwan D, Chanlek N, Goodall R. The corrosion behaviour of CoCrFeNi-x (x= Cu, Al, Sn) high entropy alloy. Corros Sci. 2020;172:108740.
-a
|
CoCrFeNiAl |
BCC + B2 (ordered BCC) |
-303 |
---- |
---- |
316 |
72
72 Muangtong P, Rodchanarowan A, Chaysuwan D, Chanlek N, Goodall R. The corrosion behaviour of CoCrFeNi-x (x= Cu, Al, Sn) high entropy alloy. Corros Sci. 2020;172:108740.
-b
|
CoCrFeNiCu |
FCC (matrix) + Cu-rich FCC (Cu segregation) |
-161 |
---- |
---- |
-50 |
72
72 Muangtong P, Rodchanarowan A, Chaysuwan D, Chanlek N, Goodall R. The corrosion behaviour of CoCrFeNi-x (x= Cu, Al, Sn) high entropy alloy. Corros Sci. 2020;172:108740.
-c
|
CoCrFeNiSn |
FCC + HCP |
-233 |
---- |
---- |
1118 |
72
72 Muangtong P, Rodchanarowan A, Chaysuwan D, Chanlek N, Goodall R. The corrosion behaviour of CoCrFeNi-x (x= Cu, Al, Sn) high entropy alloy. Corros Sci. 2020;172:108740.
-d
|
CoFeMn1.2NiGa0.8
|
FCC + BCC |
-416 |
1.11 |
---- |
790 |
Electrolyte: 3.5 wt.% NaCl solution at RT |
73
73 Sun X, Du L, Lan H, Cui J, Wang L, Li R, et al. Mechanical, corrosion and magnetic behavior of a CoFeMn1.2NiGa0.8 high entropy alloy. J Mater Sci Technol. 2021;73:139-134.
|
Al10Co24Cr10Fe15Ni34Ti6Cu1
|
FCC |
-63 |
0.022 |
---- |
---- |
Fe, Co and Cr enriched in the dendrite region; Al and Ti enriched in the interdendrite region; Electrolyte: 3.5 wt.% NaCl solution at RT |
74
74 Sünbul SE, Için K, Seren FZ, Sahin O, Çakil DD, Sezer R, et al. Determination of structural, isothermal oxidation and corrosion properties of Al-Co-Cr-Fe-Ni-Ti-Cu high-entropy alloy. Vacuum. 2021;187:110072.
|
CoCrFeNiGe0.3
|
FCC |
-34 |
0.56 |
2.51 |
1410 |
GeO2 oxide present in the passive film increases the corrosion resistance with respect to CoCrFeNi HEA; Electrolyte: 3.5 wt.% NaCl solution at RT |
75
75 Liu H, Tsai C. Effect of Ge addition on the microstructure, mechanical properties, and corrosion behavior of CoCrFeNi high-entropy alloys. Intermetallics. 2021;132:107167.
|
Co30Cr20Fe30Ni20
|
---- |
12 |
2.32 |
2.01 |
970 |
Electrolyte: 3.5 wt.% NaCl solution at RT |
76
76 Yang H, Shang X, Wang L, Wang Z, Wang J, Lin X. Effect of constituent elements on the corrosion resistance of single-phase CoCrFeNi high-entropy alloys in NaCl solution. Chin Shu Hsueh Pao. 2018;54:905-10. [in Chinese]
|
Ni2CrFeMo0.2
|
---- |
-179 |
0.896 |
5.404 |
920 |
|
77
77 Wei L, Wu Q, Shang X, Li J, Wang J. Effect of Mo element and heat treatment on corrosion resistance of Ni2CrFeMox high-entropy alloy in NaCl solution. Chin Shu Hsueh Pao. 2019;55:840-8. [in Chinese]
|