Effect of Vacuum on Microstructure and Properties of Laser Cladding Ni-Based WC Coating

Yongqiang Yao; Chen Lin; Jingyi Shen; Jia Liu; Huanhuan Xu

doi:10.3788/LOP56.221402

Laser & Optoelectronics Progress, Volume. 56, Issue 22, 221402(2019)

Effect of Vacuum on Microstructure and Properties of Laser Cladding Ni-Based WC Coating

Yongqiang Yao, Chen Lin^*, Jingyi Shen, Jia Liu, and Huanhuan Xu

Author Affiliations

School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, Shandong 266520, China

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Figures & Tables(8)

Fig. 1. Vacuum box picture

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Fig. 2. Microstructures of coatings under different process conditions. (a1)(a2) non-vacuum environment; (b1)(b2) vacuum environment

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Fig. 3. XRD patterns of coating under different process conditions. (a) Non-vacuum environment; (b) vacuum environment

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Fig. 4. Microhardness curves of the coating

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Fig. 5. Friction coefficient curves of the coating

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Fig. 6. Scratch corrugated curves of the coating

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Table 1. Chemical composition of Q235 steel
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Table 1. Chemical composition of Q235 steel
Element C Mn Si S P Fe
Mass fraction /% 0.140-0.220 0.300-0.650 ≤0.300 ≤0.050 ≤0.045 Bal.

Table 2. Chemical composition of Ni-based WC powder
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Table 2. Chemical composition of Ni-based WC powder
Element Cr Fe B Si Co WC Ni
Massfraction /% 13.0 3.0 3.1 4.3 5.0 25.0 Bal.

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Yongqiang Yao, Chen Lin, Jingyi Shen, Jia Liu, Huanhuan Xu. Effect of Vacuum on Microstructure and Properties of Laser Cladding Ni-Based WC Coating[J]. Laser & Optoelectronics Progress, 2019, 56(22): 221402

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