Yuling Gong, Chen Cui, Meiping Wu. Effect of Nano-CeO2 Content on Microstructure and Corrosion Resistance of Ni60A Coating[J]. Laser & Optoelectronics Progress, 2021, 58(21): 2114007
- Laser & Optoelectronics Progress
- Vol. 58, Issue 21, 2114007 (2021)
Fig. 1. SEM micrographs of powder. (a) Ni60A powder; (b) CeO2 powder
Fig. 2. Picture and principle diagram of laser cladding equipment. (a) Equipment picture; (b) principle diagram
Fig. 3. XRD diffraction patterns of Ni60A coating with different CeO2 mass fractions of 0-4%
Fig. 4. Microstructures of the coating in the top, middle, and bottom regions with different CeO2 mass fractions
Fig. 5. Enlarged diagrams of CeO2/Ni60A coating with different CeO2 mass fractions in the calibration areas of Fig. 4. (a) Ni60A; (b) 1% CeO2/Ni60A; (c) 2% CeO2/Ni60A; (d) 3% CeO2/Ni60A
Fig. 6. EDS spectra of typical tissues in Fig. 5. (a) Region A; (b) region B; (c) region C; (d) region D
Fig. 7. Dynamic polarization curves of Ni60A coating with different CeO2 mass fractions
Fig. 8. Nyquist curves and equivalent circuit diagram of different CeO2/Ni60A coatings. (a) Nyquist curve; (b) equivalent circuit diagram
Fig. 9. Morphologies of different CeO2/Ni60A coatings after electrochemical corrosion. (a) Ni60A; (b) 1% CeO2 /Ni60A;(c) 2% CeO2/Ni60A; (d) 3% CeO2/Ni60A; (e) 4% CeO2/Ni60A
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Table 1. Chemical composition of powder
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Table 2. Electrochemical parameters of Ni60A coating with different CeO2 mass fractions
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Table 3. Equivalent circuit parameters of different CeO2 /Ni60A coatings
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