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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 65, 2014 - Issue 7
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Original Articles

Numerical Simulation of Heat and Mass Transfer during Nanosecond Laser Chemical Vapor Deposition on a Particle Surface

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Pages 662-678 | Received 28 Jun 2013, Accepted 27 Jul 2013, Published online: 10 Jan 2014
 

Abstract

Chemical vapor deposition of TiN on a spherical particle surface subjected to nanosecond laser heating is simulated numerically here. A thermal model is developed to describe the heat transfer within the particle, chemical reaction on the particle surface, and mass transfer in the gases. The heat conduction and mass diffusion equations are discretized using the finite volume method with fully implicit schemes, and solved with tridiagonal matrix method. Temporal distributions of particle surface temperature and deposited film thickness resulting from multiple-pulse irradiation are analyzed for a wide range of parameters including laser fluence, pulse repetition frequency, pulse width, initial particle temperature, particle radius, and total pressure in the reaction chamber.

Acknowledgments

Support for this work by the National Key Basic Research Program of China (973 Program) under grant no. 2013CB228304, the Chinese National Natural Science Foundation of China under grant no. 51176155, and the US National Science Foundation under grant no. CBET- 1066917 is gratefully acknowledged.

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