Sulfurizing of CoCrFeNiSi0.4 and CoCrFeMoNi high entropy alloys fabricated by laser cladding

Gang Cui; Bin Han; Ying Yang; Meiyan Li; Jianlong Li

doi:10.1016/j.surfcoat.2019.125182

Sulfurizing of CoCrFeNiSi_0.4 and CoCrFeMoNi high entropy alloys fabricated by laser cladding

Gang Cui, Bin Han, Ying Yang, Meiyan Li, Jianlong Li

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

The ion sulfurizing technique was carried out on CoCrFeNiSi_0.4 and CoCrFeMoNi high entropy alloys (HEAs), the microstructures and tribological properties of the HEAs before and after sulfurization were tested and analyzed. Results indicated that the CoCrFeNiSi_0.4 and CoCrFeMoNi HEAs were both dominated by FCC solid solution. After sulfurization, the FeS and FeS/MoS₂ multisulfides lubricant films with thickness around 4 μm were successfully fabricated on CoCrFeNiSi_0.4 and CoCrFeMoNi HEAs, respectively. The grains of FeS/MoS₂ multisulfides films were more compact than those of single FeS films. After sulfurization, the friction coefficients of CoCrFeNiSi_0.4 and CoCrFeMoNi HEAs were decreased from 0.6 and 0.47 to 0.152 and 0.12, respectively. Because of the effectively synergistic work of FeS and MoS₂ lubricant phases, the FeS/MoS₂ multisulfides films performed lower stable friction coefficient (0.12) and weight loss (4.25 mg) than single FeS films, which were 0.152 and 5.9 mg, respectively.

Original language	English
Article number	125182
Journal	Surface and Coatings Technology
Volume	381
DOIs	https://doi.org/10.1016/j.surfcoat.2019.125182
State	Published - Jan 15 2020
Externally published	Yes

Funding

This work was supported by National Natural Science Foundation of China ( 51771228 , 51801234 ); Natural Science Foundation of Shandong Province ( ZR201702200455 ); State Key Laboratory of Solid Lubrication ( LSL1609 ); Fundamental Research Funds for the Central Universities ( 18CX06052A ).

Keywords

FeS/MoS multisulfides lubricant films
High entropy alloy
Ion sulfurizing
Laser cladding
Tribological properties

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.surfcoat.2019.125182

Cite this

@article{d69c80a056af4b38876ffb5c398b0fd6,

title = "Sulfurizing of CoCrFeNiSi0.4 and CoCrFeMoNi high entropy alloys fabricated by laser cladding",

abstract = "The ion sulfurizing technique was carried out on CoCrFeNiSi0.4 and CoCrFeMoNi high entropy alloys (HEAs), the microstructures and tribological properties of the HEAs before and after sulfurization were tested and analyzed. Results indicated that the CoCrFeNiSi0.4 and CoCrFeMoNi HEAs were both dominated by FCC solid solution. After sulfurization, the FeS and FeS/MoS2 multisulfides lubricant films with thickness around 4 μm were successfully fabricated on CoCrFeNiSi0.4 and CoCrFeMoNi HEAs, respectively. The grains of FeS/MoS2 multisulfides films were more compact than those of single FeS films. After sulfurization, the friction coefficients of CoCrFeNiSi0.4 and CoCrFeMoNi HEAs were decreased from 0.6 and 0.47 to 0.152 and 0.12, respectively. Because of the effectively synergistic work of FeS and MoS2 lubricant phases, the FeS/MoS2 multisulfides films performed lower stable friction coefficient (0.12) and weight loss (4.25 mg) than single FeS films, which were 0.152 and 5.9 mg, respectively.",

keywords = "FeS/MoS multisulfides lubricant films, High entropy alloy, Ion sulfurizing, Laser cladding, Tribological properties",

author = "Gang Cui and Bin Han and Ying Yang and Meiyan Li and Jianlong Li",

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doi = "10.1016/j.surfcoat.2019.125182",

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T1 - Sulfurizing of CoCrFeNiSi0.4 and CoCrFeMoNi high entropy alloys fabricated by laser cladding

AU - Cui, Gang

AU - Han, Bin

AU - Yang, Ying

AU - Li, Meiyan

AU - Li, Jianlong

PY - 2020/1/15

Y1 - 2020/1/15

N2 - The ion sulfurizing technique was carried out on CoCrFeNiSi0.4 and CoCrFeMoNi high entropy alloys (HEAs), the microstructures and tribological properties of the HEAs before and after sulfurization were tested and analyzed. Results indicated that the CoCrFeNiSi0.4 and CoCrFeMoNi HEAs were both dominated by FCC solid solution. After sulfurization, the FeS and FeS/MoS2 multisulfides lubricant films with thickness around 4 μm were successfully fabricated on CoCrFeNiSi0.4 and CoCrFeMoNi HEAs, respectively. The grains of FeS/MoS2 multisulfides films were more compact than those of single FeS films. After sulfurization, the friction coefficients of CoCrFeNiSi0.4 and CoCrFeMoNi HEAs were decreased from 0.6 and 0.47 to 0.152 and 0.12, respectively. Because of the effectively synergistic work of FeS and MoS2 lubricant phases, the FeS/MoS2 multisulfides films performed lower stable friction coefficient (0.12) and weight loss (4.25 mg) than single FeS films, which were 0.152 and 5.9 mg, respectively.

AB - The ion sulfurizing technique was carried out on CoCrFeNiSi0.4 and CoCrFeMoNi high entropy alloys (HEAs), the microstructures and tribological properties of the HEAs before and after sulfurization were tested and analyzed. Results indicated that the CoCrFeNiSi0.4 and CoCrFeMoNi HEAs were both dominated by FCC solid solution. After sulfurization, the FeS and FeS/MoS2 multisulfides lubricant films with thickness around 4 μm were successfully fabricated on CoCrFeNiSi0.4 and CoCrFeMoNi HEAs, respectively. The grains of FeS/MoS2 multisulfides films were more compact than those of single FeS films. After sulfurization, the friction coefficients of CoCrFeNiSi0.4 and CoCrFeMoNi HEAs were decreased from 0.6 and 0.47 to 0.152 and 0.12, respectively. Because of the effectively synergistic work of FeS and MoS2 lubricant phases, the FeS/MoS2 multisulfides films performed lower stable friction coefficient (0.12) and weight loss (4.25 mg) than single FeS films, which were 0.152 and 5.9 mg, respectively.

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KW - Laser cladding

KW - Tribological properties

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