Effect of WC-12Co content on wear and electrochemical corrosion properties of Ni-Cu/WC-12Co composite coatings deposited by laser cladding

Zhang, Jiaqi; Lei, Jianbo; Gu, Zhonghua; Tantai, Fanliang; Tian, Hongyu; Han, Jiajie; Fang, Yan

doi:10.1016/j.surfcoat.2020.125807

Cited by 69 publications

(21 citation statements)

References 29 publications

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“…[38], the alloy properties of different Ni contents prepared by WC-EP in this study were all lower than those in the literature, and the hardness only decreased by 2.4HRA compared with that in this study, showing no significant difference, self-corrosion potential (E corr ) was -0.297 V, with a large gap, the specific reasons for which need to be further explored. In addition, Compared with the corrosion resistance of WC-12wt%Co in NaCl solution in litera- ture [39] , The highest value of polarization resistance (R p ) in the literature was 13.42 Ω and the data of chemical plated WC@18.8wt% Ni was 2.9 times higher. Therefore, the addition of Ni by electroless plating was found to significantly improve the corrosion resistance of the cemented carbide, which is a very promising strategy for fabrication of high corrosion-resistant cemented carbides [40] .…”

Section: Powder Mixingmentioning

confidence: 96%

Electroless Plating of Ni Nanoparticles on WC to Assist Its Pressureless Sintering of WC-Ni Cemented Carbide with Enhanced Mechanical and Corrosion-resistant Performance

Min

Yang

Yao

et al. 2021

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Ni nanoparticles were coated uniformly on the surface of WC powder via a facile electroless plating method (abbreviated as WCN-EP), and then consolidated for mechanical and corrosion resistance performance characterization, in comparison with hand mixed WC-Ni (WCN-H). Under the optimized electroless plating parameters, Ni particles, less than 1 μm in average diameter, were found to be uniformly and densely wrapped on the surface of the tungsten carbide matrix of WCN-EP. In comparison, in WCN-H, the Ni particles about 1.8 μm in average diameter, were randomly distributed together with irregular WC particles. The uniform coating of Ni was found to assist the densification process of WCN-EP effectively, with higher densities and less pores than those of WCN-H at the Ni content of 10.6wt%, 25.5wt%, and 30.3 wt%. However, at the Ni content of 18.8wt%, the relative densities of WCN-EP and WCN-H both increased to the maximum value of 98%. The maximum hardness of the consolidated WCN-EP was 82.6 HRA, about 1.2 HRA higher than that of WCN-H. In addition, the consolidated WCN-EP also exhibits a superior corrosion resistance by the polarization curve analysis at an electrochemical workstation..

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Section: Powder Mixingmentioning

confidence: 96%

Electroless Plating of Ni Nanoparticles on WC to Assist Its Pressureless Sintering of WC-Ni Cemented Carbide with Enhanced Mechanical and Corrosion-resistant Performance

Min

Yang

Yao

et al. 2021

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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“…In summary, different methods and forming processes can deeply affect the corrosion performance of coatings. Simultaneously, some articles have reported that the hard phase can show different morphologies and distributions even when the same commercial powder is used [19][20][21][22]. Consequently, different states of the hard phase can significantly influence the corrosion performance.…”

Section: Introductionmentioning

confidence: 99%

Geometric Influence of Hard Phase on Corrosion Performance between WC-Reinforced Coatings Prepared by High-Velocity Oxygen-Fuel Spray and Electric Contact Strengthening

et al. 2021

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Several kinds of WC-reinforced coatings were prepared by high-velocity oxygen-fuel spray (HVOF) and electric contact strengthening (ECS), respectively, and their corrosion behaviors in 3.5% NaCl solution were investigated. The microstructure, element distribution, phase and corrosion resistance of these coatings were compared. The results showed that, compared with HVOF-sprayed coatings, the ECS-prepared coatings were denser and with lower porosity. Simultaneously, the ECS coatings that used raw powder commercial WC-12Co retained the original spherical geometry of the hard phase. In open-circuit potential measurements, these ECS coatings gave higher stable potentials (Eocp). In potentiodynamic polarization tests, although the corrosion currents (icorr) of the homogeneous coatings were approximately the same, these ECS coatings still exhibited higher corrosion potentials (Ecorr). The spherical geometric distribution of the hard phase led to a bounded diffusion model caused by the diffusion change of corrosion products.

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“…Mosayebi et al 1 investigated the structure and corrosion behavior of Ni–Mo coatings, which revealed the minimum roughness, non-cracked microstructure, and highest corrosion resistance by adding 15 wt% Mo. Feng et al 9 revealed that the corrosion current density of Ni-based alloy coating with 2.5% Al content was the lowest, and Zhang et al 10 and Li et al 11 also improved the corrosion performance of Ni–Cu coatings by optimizing WC-12Co and ZrO 2 addition.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and anti-corrosion performance of laser cladded Nb-modified Ni-based alloy coatings

Chen

Wang

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this work, Ni-based alloy coatings incorporated with Nb mass fractions of 0%, 3%, 6%, and 9% were successfully fabricated by laser cladding. The morphology, chemical composition, and phases of the obtained Nb-modified Ni-based coatings were characterized, and the effects of Nb contents on their electrochemical performance and immersion rates in 3.5 wt% NaCl solution were analyzed. The results show that the Ni-based coating with low Nb exhibits the most compact and refined microstructure, the best electrochemical passivation, and the lowest immersion corrosion rate of 3.30 × 10−3 mm/year. However, with increasing Nb content, the Laves phase is accumulated, and dendritic growth is promoted, which significantly decreases the coating passive stability and worsens the anti-corrosion performance.

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Effect of WC-12Co content on wear and electrochemical corrosion properties of Ni-Cu/WC-12Co composite coatings deposited by laser cladding

Cited by 69 publications

References 29 publications

Electroless Plating of Ni Nanoparticles on WC to Assist Its Pressureless Sintering of WC-Ni Cemented Carbide with Enhanced Mechanical and Corrosion-resistant Performance

Electroless Plating of Ni Nanoparticles on WC to Assist Its Pressureless Sintering of WC-Ni Cemented Carbide with Enhanced Mechanical and Corrosion-resistant Performance

Geometric Influence of Hard Phase on Corrosion Performance between WC-Reinforced Coatings Prepared by High-Velocity Oxygen-Fuel Spray and Electric Contact Strengthening

Microstructure and anti-corrosion performance of laser cladded Nb-modified Ni-based alloy coatings

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