Microstructure and Properties of CoCrFeMnNiTix High-Entropy Alloy Coating by Laser Cladding

Hao Liu; Qiang Gao; Jiaxiang Man; Xiaojia Li; Haifeng Yang; Jingbin Hao

doi:10.3788/CJL202249.0802002

Journals >Chinese Journal of Lasers >Volume 49 >Issue 8 >Page 0802002 > Article

Chinese Journal of Lasers
Vol. 49, Issue 8, 0802002 (2022)

Microstructure and Properties of CoCrFeMnNiTi_x High-Entropy Alloy Coating by Laser Cladding

Hao Liu^1,2, Qiang Gao¹, Jiaxiang Man^1,2,*, Xiaojia Li¹..., Haifeng Yang¹ and Jingbin Hao¹|Show fewer author(s)

Author Affiliations

¹China University of Mining and Technology, School of Mechanical and Electrical Engineering, Xuzhou, Jiangsu 221116, China

²Jiangsu Collaborative Innovation Center of Intelligent Mining Equipment, Xuzhou, Jiangsu 221116, China

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DOI: 10.3788/CJL202249.0802002 Cite this Article Set citation alerts

Hao Liu, Qiang Gao, Jiaxiang Man, Xiaojia Li, Haifeng Yang, Jingbin Hao. Microstructure and Properties of CoCrFeMnNiTi_x High-Entropy Alloy Coating by Laser Cladding[J]. Chinese Journal of Lasers, 2022, 49(8): 0802002 Copy Citation Text

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Fig. 1. XRD pattern of CoCrFeMnNiTi_x high-entropy alloy coatings

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Fig. 2. FSEM images of CoCrFeMnNiTi_x high-entropy alloy coatings. (a) Ti_0.25;(b) Ti_0.50;(c) Ti_0.75;(d) Ti_1.00

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Fig. 3. Atom-pair mixing enthalpy, atomic radius and Pauling electronegativityof element in CoCrFeMnNiTi_x HEA coatings system

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Fig. 4. Elemental mapping of Ti_0.25 and Ti_0.50 high-entropy alloy coatings. (a) Ti_0.25;(b) Ti_0.50

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Fig. 5. Microhardness of CoCrFeMnNiTi_x high-entropy alloy coatings

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Fig. 6. Potentiodynamic polarization curves of CoCrFeMnNiTi_x high-entropy alloy coatings

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Fig. 7. Electrochemical corrosion parameters of CoCrFeMnNiTi_x high-entropy alloy coatings

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Fig. 8. Corrosion morphology of high-entropy alloy coatings. (a) CoCrFeMnNi; (b) Ti_0.25;(c) Ti_0.50;(d) Ti_0.75;(e) Ti_1.00

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Fig. 9. Friction coefficient of CoCrFeMnNiTi_x high-entropy alloy coatings. (a) Friction coefficient curve; (b) average friction coefficient

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Fig. 10. Wear results of CoCrFeMnNiTi_x high-entropy alloy coatings. (a) Worn profile; (b) wear rate

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Fig. 11. Worn morphology of CoCrFeMnNiTi_x high-entropy alloy coatings. (a)(c) Ti_0.50;(d)(f) Ti_0.75;(g)(i) Ti_1.00

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Coating	Region	Test point	Atomic fraction /%
Coating	Region	Test point	C	Ti	Cr	Mn	Fe	Co	Ni
Ti_0.25	P	A	61.23	8.09	3.09	2.93	19.04	2.84	2.77
Ti_0.25	DR	B	42.40	0.86	4.89	4.18	38.16	5.09	4.42
Ti_0.50	P	A	53.41	11.42	2.49	2.35	25.76	2.31	2.27
	DR	B	31.64	1.34	3.96	3.63	51.70	4.25	3.49
	IR	C	33.40	2.10	4.18	4.28	47.70	4.37	3.97
Ti_0.75	P	A	50.44	15.90	2.22	2.10	25.55	2.06	1.73
	DR	B	32.30	1.77	3.77	3.56	51.32	3.81	3.54
	IR	C	36.08	5.46	3.38	3.79	42.74	4.29	4.26
Ti_1.00	P	A	51.18	27.02	1.23	1.01	17.96	0.89	0.72
Ti_1.00	DR	B	43.97	4.27	2.32	2.44	42.56	2.21	2.23

Table 1. Results of energy spectrum analysis of CoCrFeMnNiTi_x high-entropy alloy coatings

Coating	I_corr /A·cm^－2	E_corr /V
CoCrFeMnNi	7.36×10^－6	－0.466
Ti_0.25	4.60×10^－6	－0.490
Ti_0.50	7.50×10^－6	－0.474
Ti_0.75	6.78×10^－6	－0.475
Ti_1.00	6.32×10^－6	－0.582

Table 2. Electrochemical corrosion parameters of high-entropy alloy coatings

Coating	Test point	Mass fraction /%
Coating	Test point	C	N	O	Si	Ti	Cr	Mn	Fe	Co	Ni
Ti_0.25	A	4.79	0.60	20.02	1.28	1.87	9.49	9.92	31.55	10.33	10.13
	B	6.65	0	1.00	0.22	1.76	11.87	12.35	39.14	13.79	13.20
	C	7.31	0	5.43	0.19	2.54	11.77	11.48	35.70	13.23	12.36
Ti_0.50	A	15	0.64	32.66	3.61	1.77	5.94	6.05	21.49	6.74	6.10
	B	5.64	0	3.27	0.07	21.72	9.09	8.89	32.97	9.19	9.17
	C	7.88	0	13.40	0.24	2.57	9.68	9.77	34.48	10.88	11.09
Ti_1.00	A	3.40	0.47	34.40	2.52	11.77	5.67	5.33	25.18	5.77	5.51
	B	5.51	0	2.27	0.13	5.77	9.44	9.75	45.37	10.62	11.13
	C	18.03	0	13.10	0.39	1.77	6.18	4.20	42.93	6.84	6.56

Table 3. Elemental distribution of worn scar of CoCrFeMnNiTi_x high-entropy alloy coatings

Coating	A_n /mm²	$\bar{F}$	$\bar{V}$	N	T_b /K	T_f /K
CoCrFeMnNi	1.83×10^－2	0.16	70.12	1854	360.43	384.41
Ti_0.25	0.63×10^－2	0.47	43.20	1298	427.48	470.87
Ti_0.50	2.51×10^－2	0.12	103.02	3068	350.14	365.66
Ti_0.75	1.76×10^－2	0.17	69.76	1893	366.57	392.25
Ti_1.00	1.40×10^－2	0.21	65.69	2001	356.02	375.23