Optimizing mechanical and tribological properties of DLC/Cr3C2-NiCr duplex coating via tailoring interlayer thickness
Optimizing mechanical and tribological properties of DLC/Cr3C2-NiCr duplex coating via tailoring interlayer thickness
A top DLC film was deposited on the surface of Cr3C2-NiCr coated 38CrMoAl steel substrate, and the effect of Cr3C2-NiCr cermet interlayer thickness on the mechanical and tribological properties of the duplex coating was investigated by experimental analysis and finite element modeling (FEM). Results shown that, compared with single DLC film, the load-bearing capacity and tribological performance of DLC/Cr3C2-NiCr duplex coating were significantly improved, especially its anti-wear performance was nearly ten times higher than that of the single DLC film. Moreover, the duplex coating with an optimum cermet interlayer thickness of 100 μm showed the best comprehensive performance. FEM analysis also shown that the presence of Cr3C2-NiCr cermet interlayer limited the stress concentration area within the interlayer, which made the stress concentration area far away from the interface of DLC film and cermet interlayer, thus improved duplex coating durability. What's more, the cermet interlayer thickness increase resulted in the contact stress on DLC film increase, which contributed to the improvement of its tribological performance.
DLC/Cr3C2-NiCr duplex coating, Finite element analysis, Mechanical property, Stress distribution, Tribological property
Li, Wensheng
9483fd8e-f3d4-48b8-8a75-14ff5fc5d9e5
Zhao, Yaoting
ca4e1118-15bb-415c-b92a-c6ff837e0f60
He, Dongqing
e2d4bf25-4f51-4ebd-a426-b66b041a43af
Song, Qiang
0e63963e-ca53-43ad-bd0b-1524ec77c389
Sun, Xuwei
b85834c3-cee6-4078-9591-2d503df27292
Wang, Shuncai
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Zhai, Haiming
60587ac0-26b5-4e71-aabc-f54ebaef56a7
Zheng, Wenwen
bb4e45a2-261b-4b75-bda4-93caa6b63b48
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73
Li, Wensheng
9483fd8e-f3d4-48b8-8a75-14ff5fc5d9e5
Zhao, Yaoting
ca4e1118-15bb-415c-b92a-c6ff837e0f60
He, Dongqing
e2d4bf25-4f51-4ebd-a426-b66b041a43af
Song, Qiang
0e63963e-ca53-43ad-bd0b-1524ec77c389
Sun, Xuwei
b85834c3-cee6-4078-9591-2d503df27292
Wang, Shuncai
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Zhai, Haiming
60587ac0-26b5-4e71-aabc-f54ebaef56a7
Zheng, Wenwen
bb4e45a2-261b-4b75-bda4-93caa6b63b48
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73
Li, Wensheng, Zhao, Yaoting, He, Dongqing, Song, Qiang, Sun, Xuwei, Wang, Shuncai, Zhai, Haiming, Zheng, Wenwen and Wood, Robert
(2022)
Optimizing mechanical and tribological properties of DLC/Cr3C2-NiCr duplex coating via tailoring interlayer thickness.
Surface and Coatings Technology, 434, [128198].
(doi:10.1016/j.surfcoat.2022.128198).
Abstract
A top DLC film was deposited on the surface of Cr3C2-NiCr coated 38CrMoAl steel substrate, and the effect of Cr3C2-NiCr cermet interlayer thickness on the mechanical and tribological properties of the duplex coating was investigated by experimental analysis and finite element modeling (FEM). Results shown that, compared with single DLC film, the load-bearing capacity and tribological performance of DLC/Cr3C2-NiCr duplex coating were significantly improved, especially its anti-wear performance was nearly ten times higher than that of the single DLC film. Moreover, the duplex coating with an optimum cermet interlayer thickness of 100 μm showed the best comprehensive performance. FEM analysis also shown that the presence of Cr3C2-NiCr cermet interlayer limited the stress concentration area within the interlayer, which made the stress concentration area far away from the interface of DLC film and cermet interlayer, thus improved duplex coating durability. What's more, the cermet interlayer thickness increase resulted in the contact stress on DLC film increase, which contributed to the improvement of its tribological performance.
Text
1-s2.0-S0002929722000544-main
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More information
Accepted/In Press date: 31 January 2022
e-pub ahead of print date: 5 February 2022
Additional Information:
Funding Information:
The authors are grateful for financial support from National Natural Science Foundation of China ( 51905244 , 52075234 ), and the program of “ Science and Technology International Cooperation Demonstrative Base of Metal Surface Engineering along the Silk Road ” ( 2017D01003 ) of China and the Hongliu Distinguished Young Talent Support Program of Lanzhou University of Technology .
Publisher Copyright:
© 2022
Keywords:
DLC/Cr3C2-NiCr duplex coating, Finite element analysis, Mechanical property, Stress distribution, Tribological property
Identifiers
Local EPrints ID: 454963
URI: http://eprints.soton.ac.uk/id/eprint/454963
ISSN: 0257-8972
PURE UUID: 38eb06d7-1a63-42b1-a185-ae587d0fec11
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Date deposited: 02 Mar 2022 17:58
Last modified: 17 Mar 2024 02:40
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Contributors
Author:
Wensheng Li
Author:
Yaoting Zhao
Author:
Dongqing He
Author:
Qiang Song
Author:
Xuwei Sun
Author:
Haiming Zhai
Author:
Wenwen Zheng
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