Heat-transfer processes upon laser heating of inert-matrix-hosted inclusions
V.G. Kriger1, A.V. Kalenskii1, A.A. Zvekov2, I.Yu. Zykov1, and A.P. Nikitin1
1Kemerovo State University, Kemerovo, Russia
2Institute of Coal Chemistry and Chemical Materials Science SB RAS, Kemerovo, Russia
Keywords: laser radiation, melting, hot-spot model, thermal explosion
Pages: 367–374
Abstract
A model to describe the heating of metal inclusions in inert media by a laser radiation pulse with allowance for the heat-transfer and melting processes in the matrix and inclusion materials is proposed. The time regularities of the heating of the matrix and inclusions were examined, and the dependences of the maximum temperature on the particle surface on the laser pulse energy density and on the particle radius were obtained. Approximate formulae for the maximum heating temperature and for the radius of most heated particles are proposed. We show that melting processes result in a reduction of the maximum heating temperature and in an insignificant variation of the radius of most heated particles.
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