Juan Hong, Yuan Kuai, Kun Cheng, Zexin Zhang, Feng Qian, Jun Qian, Rulong Chen, Honglie Shen. Numerical simulation and experimental study of multi-pulse laser cladding of B doped Si nano-film[J]. Infrared and Laser Engineering, 2021, 50(10): 20210023

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- Infrared and Laser Engineering
- Vol. 50, Issue 10, 20210023 (2021)

Fig. 1. Geometric model

Fig. 2. Distributions of three-dimensional temperature field at different moments (a)
; (b)
不同时刻下的三维温度场分布。(a)
;(b)

Fig. 3. Sketch map of node positions

Fig. 4. Different temperatures of the positions as the time change

Fig. 5. Rate of temperature changes at different points. (a) Center of spot; (b) Point B at the edge of the laser beam

Fig. 6. Three-dimensional temperature field distributions at different moments. (a)
; (b)
; (c)
; (d)
; (e)
; (f)
不同时刻下的三维温度场分布。(a)
; (b)
; (c)
; (d)
; (e)
; (f)

Fig. 7. Temperature at different locations changes with time. (a) Horizontal direction point A ,B ,C ; (b) Vertical direction point C ,D ,E

Fig. 8. Influence of the number of pulses on the size of cladding layer

Fig. 9. Rate of temperature change at different locations changes with time. (a) Point A ; (b) Point B

Fig. 10. Cmparison with the characters of single and multi-pulse laser cladding of Si film. (a) Morphology of single pulse cladding of Si film; (b) Morphology of single pulse cladding after remove redundant Si film; (c) Morphology of muti-pulse cladding of Si film; (d) Morphology of muti-pulse cladding after remove redundant Si film; Morphology of back surface field form by (e) single pulse laser cladding and (f) muti-pulse laser cladding

Fig. 11. B atoms concentration in Si substrate after laser doping measured by ECV
|
Table 1. Thermal physical parameters of matrix materials

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