Effect of laser texture fitting grooves on plasma-sprayed filling coating model

Delong Jia; Peng Yi; Yancong Liu; Jiawei Sun; Qi Zhao; Shengbo Yue

doi:10.1117/12.2586635

2 December 2020 Effect of laser texture fitting grooves on plasma-sprayed filling coating model

Delong Jia, Peng Yi, Yancong Liu, Jiawei Sun, Qi Zhao, Shengbo Yue

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 117171C (2020) https://doi.org/10.1117/12.2586635
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

Laser surface texture and atmospheric plasma spraying technology were used to prepare molybdenum coating on AISI 304 stainless steel substrate. A 3D surface topography instrument was used to extract the groove profile and a quadratic parabola was used to fit the textured groove. Meanwhile, a numerical model was established in which multiple droplets filled a single measured and fitted groove. The solidification, defects, and wall temperature of the coating filled with the groove with droplets were compared with the parabola grooves. The simulation comparison between the fitted groove and measured groove shows that the splat was opening angle increases by 22.95%. The maximum heat flow rate transferred by the groove wall interface decreases by 10.1%. The solidification time trend is the same, whereas the filling splash of droplet fluid is reduced.

Citation Download Citation

Delong Jia, Peng Yi, Yancong Liu, Jiawei Sun, Qi Zhao, and Shengbo Yue "Effect of laser texture fitting grooves on plasma-sprayed filling coating model", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 117171C (2 December 2020); https://doi.org/10.1117/12.2586635

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