Microstructure and tribological properties of WC-12Ni/Cu composite coating prepared by laser cladding on 45 steel surface

To reduce the amount of copper used and improve the service life of the copper layer in the plunger pair of a plunger pump, Ni15 was chosen as the transition layer to assist in the laser cladding preparation of copper-steel composite materials. WC-12Ni powder was mixed into Cu powder at concentratio...

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Main Authors: Fulong Zhang, Junquan Zhang, Lu Ping, Zhang Wentao, Shuangyu Liu, Huang Chuanjin, Zhang Qiushi, Bo Cui, Wang Binhua
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:Materials Research Express
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Online Access:https://doi.org/10.1088/2053-1591/ada5c5
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author Fulong Zhang
Junquan Zhang
Lu Ping
Zhang Wentao
Shuangyu Liu
Huang Chuanjin
Zhang Qiushi
Bo Cui
Wang Binhua
author_facet Fulong Zhang
Junquan Zhang
Lu Ping
Zhang Wentao
Shuangyu Liu
Huang Chuanjin
Zhang Qiushi
Bo Cui
Wang Binhua
author_sort Fulong Zhang
collection DOAJ
description To reduce the amount of copper used and improve the service life of the copper layer in the plunger pair of a plunger pump, Ni15 was chosen as the transition layer to assist in the laser cladding preparation of copper-steel composite materials. WC-12Ni powder was mixed into Cu powder at concentrations of 5, 10, 15, 20, 25 wt%, and different compositions of cladding layers were prepared using laser cladding technology. The microstructure of the cladding layers was analyzed by optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive x-ray spectroscopy (EDS). The microhardness of the composite coatings was tested using microhardness Vickers (MHV), and the tribological performance of the composite coatings was evaluated using the friction and wear testing machine (F&WM). The results showed that, in terms of microstructure, element diffusion occurred around the WC particles, and partial dissolution of WC particles at their sharp corners led to the formation of new compounds with other elements. Additionally, WC particles contributed to the refinement of the microstructure. In terms of performance, the microhardness of the composite coatings increased with the increase in WC-12Ni content, reaching a maximum of 412.5 HV _0.1 when the content was 25 wt%. Regarding tribological properties, the composite coating with 20 wt% WC-12Ni exhibited excellent friction-reducing properties, with a stable coefficient of friction of 0.53. Both the 20 wt% and 25 wt% WC-12Ni composite coatings demonstrated good wear resistance, with wear rates of 4.4 × 10 ^−4 mg/ N·m.
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spelling doaj-art-5551835ef730498b8dfa7bdd0b8ba81a2025-01-16T16:43:21ZengIOP PublishingMaterials Research Express2053-15912025-01-0112101650710.1088/2053-1591/ada5c5Microstructure and tribological properties of WC-12Ni/Cu composite coating prepared by laser cladding on 45 steel surfaceFulong Zhang0https://orcid.org/0000-0002-1211-3294Junquan Zhang1https://orcid.org/0009-0000-0998-3822Lu Ping2Zhang Wentao3Shuangyu Liu4Huang Chuanjin5Zhang Qiushi6Bo Cui7Wang Binhua8College of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaCollege of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaCollege of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaZhongshan Institute of Changchun University of Science and Technology , Zhongshan, 528400, People’s Republic of ChinaCollege of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaCollege of Mechanical Engineering, Yancheng Institute of Technology , Yancheng 224051, People’s Republic of ChinaCollege of Mechanical Engineering, Changchun Technical University of Automobile , Changchun, 130013, People’s Republic of ChinaSchool of Mechanical and Civil Engineering, Jilin Agricultural Science and Technology University , Jilin 132101, People’s Republic of ChinaJiangsu Global Laser Box Digital Tech Co., Ltd , Yancheng, 224001, People’s Republic of ChinaTo reduce the amount of copper used and improve the service life of the copper layer in the plunger pair of a plunger pump, Ni15 was chosen as the transition layer to assist in the laser cladding preparation of copper-steel composite materials. WC-12Ni powder was mixed into Cu powder at concentrations of 5, 10, 15, 20, 25 wt%, and different compositions of cladding layers were prepared using laser cladding technology. The microstructure of the cladding layers was analyzed by optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive x-ray spectroscopy (EDS). The microhardness of the composite coatings was tested using microhardness Vickers (MHV), and the tribological performance of the composite coatings was evaluated using the friction and wear testing machine (F&WM). The results showed that, in terms of microstructure, element diffusion occurred around the WC particles, and partial dissolution of WC particles at their sharp corners led to the formation of new compounds with other elements. Additionally, WC particles contributed to the refinement of the microstructure. In terms of performance, the microhardness of the composite coatings increased with the increase in WC-12Ni content, reaching a maximum of 412.5 HV _0.1 when the content was 25 wt%. Regarding tribological properties, the composite coating with 20 wt% WC-12Ni exhibited excellent friction-reducing properties, with a stable coefficient of friction of 0.53. Both the 20 wt% and 25 wt% WC-12Ni composite coatings demonstrated good wear resistance, with wear rates of 4.4 × 10 ^−4 mg/ N·m.https://doi.org/10.1088/2053-1591/ada5c545 steellaser claddingcopper alloy composite coatingfriction and wear properties
spellingShingle Fulong Zhang
Junquan Zhang
Lu Ping
Zhang Wentao
Shuangyu Liu
Huang Chuanjin
Zhang Qiushi
Bo Cui
Wang Binhua
Microstructure and tribological properties of WC-12Ni/Cu composite coating prepared by laser cladding on 45 steel surface
Materials Research Express
45 steel
laser cladding
copper alloy composite coating
friction and wear properties
title Microstructure and tribological properties of WC-12Ni/Cu composite coating prepared by laser cladding on 45 steel surface
title_full Microstructure and tribological properties of WC-12Ni/Cu composite coating prepared by laser cladding on 45 steel surface
title_fullStr Microstructure and tribological properties of WC-12Ni/Cu composite coating prepared by laser cladding on 45 steel surface
title_full_unstemmed Microstructure and tribological properties of WC-12Ni/Cu composite coating prepared by laser cladding on 45 steel surface
title_short Microstructure and tribological properties of WC-12Ni/Cu composite coating prepared by laser cladding on 45 steel surface
title_sort microstructure and tribological properties of wc 12ni cu composite coating prepared by laser cladding on 45 steel surface
topic 45 steel
laser cladding
copper alloy composite coating
friction and wear properties
url https://doi.org/10.1088/2053-1591/ada5c5
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