Chaowei Jiang, Bo Liu, Yunyi Zhang, Jingyong Sun, Bo Li, Qunli Zhang, Jianhua Yao. Process Optimization of CNTs/Cu Composite Coating Prepared by Laser-Assisted Low Pressure Cold Spraying[J]. Laser & Optoelectronics Progress, 2022, 59(7): 0724001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 7, 0724001 (2022)
Fig. 1. Morphologies of feedstock powders. (a) Cu powder; (b) CNTs powder
Fig. 2. Flow chart of electroless plating of copper on CNTs powder
Fig. 3. Morphology and EDS scanning results of CNTs powder after electroless plating of copper. (a) Powder morphology; (b) C element; (c) O element; (d) Cu element
Fig. 4. Schematic of laser-assisted low pressure cold spraying system
Fig. 5. Cross-sectional morphologies of laser-assisted low pressure cold sprayed CNTs/Cu composite coatings prepared at different spraying distances. (a) 10 mm; (b) 15 mm; (c) 20 mm
Fig. 6. Cross-sectional morphologies of laser-assisted cold sprayed CNTs/Cu composite coatings prepared at different scanning speeds. (a) 10 mm/s; (b) 20 mm/s; (c) 30 mm/s
Fig. 7. Cross-sectional morphologies of laser-assisted cold sprayed CNTs/Cu composite coatings prepared under different laser irradiation powers. (a) 400 W; (b) 600 W; (c) 800 W; (d) 1000 W
Fig. 8. Thickness and width of laser-assisted cold sprayed CNTs/Cu composite coating versus laser irradiation power
Fig. 9. Microstructure and EDS scanning results of laser-assisted cold sprayed CNTs/Cu composite coating. (a) Morphology of composite coating; (b) C element; (c) O element; (d) Cu element
Fig. 10. Microstructure of etched CNTs/Cu composite coating prepared by laser-assisted cold spraying
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Table 1. Process parameters for laser-assisted low pressure cold spraying of CNTs/Cu composite coatings
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