Zhang Hongwei, Zhang Dingli, Zhang Tiangang, Li Baoxuan, Xu Yutong. Microstructure and Tribological Properties of In Situ TiC-Reinforced Ti-Based Composite Coating by Laser Cladding on TC4 Surface[J]. Laser & Optoelectronics Progress, 2021, 58(1): 114001
- Laser & Optoelectronics Progress
- Vol. 58, Issue 1, 114001 (2021)
Fig. 1. Micrograph of mixed powders
Fig. 2. Surface morphology and penetrant detection of the coating. (a) Surface morphology; (b) penetrant detection
Fig. 3. Cross section SEM of the coating
Fig. 4. XRD analysis results of the coating
Fig. 5. Distribution and morphology of TiC in different positions of the coating.(a)(b)(c) Top region; (d)(e)(f) middle zone; (g)(h)(i) bonding zone
Fig. 6. EDS spectral of each phase in the coating.(a) A1 phase; (b) A2 phase; (c) A3 phase; (d) A4 phase
Fig. 7. EPMA elements distribution of the coating.(a) Ti; (b) C; (c) Al; (d) V; (e) Ni; (f) Cr; (g) BSE; (h) SEM
Fig. 8. Microhardness curve of the coating
Fig. 9. White light interferogram morphology and wear contour curve of the coating wear surface (x, y axis).(a) TC4 substrate; (b) coating
Fig. 10. Morphology of friction and wear. (a) TC4 substrate; (b) coating
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Table 1. Chemical composition of TC4 alloy unit:%
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Table 2. Chemical composition of NiCr-Cr3C2 powder unit:%
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Table 3. Process parameters of laser cladding
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Table 4. Test methods and equipments of the coating
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Table 5. Melting point of ceramic phases (TiC, Cr7C3, Cr3C2) unit：K
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Table 6. EDS analysis results of each phase in the coating unit：%
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Table 7. Friction and wear properties parameters of TC4 substrate and the coating
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