The Paton Welding Journal, 2005, №12

2005 №12 (01)

2005 №12 (03)

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The Paton Welding Journal, 2005, #12, pages

Modelling of the process of laser spraying of ceramic coatings allowing for scatter of the laser beam by spray particles

A.I. Bushma, Yu.L. Vasenin, I.V. Krivtsun

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Mathematical model was developed for computer simulation of movement and heating of particles of finely dispersed ceramic materials under conditions of laser spraying of coatings. Scatter and absorption of the laser beam by the whole of the particles were allowed for in estimation of local values of the intensity of radiation along the path of movement of an individual particle. The paths, velocities, spatial distribution and temperature fields of fine SiO2 particles under conditions of laser spraying using CO2-laser were calculated. It is shown that powder consumption has a substantial effect on distributed and integral characteristics of the laser beam, as well as on the thermal state of the spray particles.
Keywords: laser spraying, ceramic particles, laser beam, scatter, movement velocity, thermal state, modelling

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Suggested Citation

A.I. Bushma, Yu.L. Vasenin, I.V. Krivtsun (2005) Modelling of the process of laser spraying of ceramic coatings allowing for scatter of the laser beam by spray particles. The Paton Welding J., 12, 10-14.

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