Laser thermal effect on silicon nitride ceramic based on thermo-chemical reaction with temperature-dependent thermo-physical parameters
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- 作者：A.F. Pana ; aifeipan@stu.xjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; W.J. Wanga ; wenjunwang@mail.xjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; 47301533@qq.com" class="auth_mail" title="E-mail the corresponding author ; X.S. Meia ; xsmei@mail.xjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; K.D. Wanga ; kdwang@mail.xjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; W.Q. Zhaoa ; zhaowq@stu.xjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; T.Q. Lib ; xmcx731@stu.xjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Silicon nitride ceramic ; Thermo-chemical reaction model ; First-principles calculations ; Laser ablation ; Thermodynamic parameters
- 刊名：Applied Surface Science
- 出版年：2016
- 出版时间：1 July 2016
- 年：2016
- 卷：375
- 期：Complete
- 页码：90-100
- 全文大小：3941 K
文摘
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A two-dimensional thermo-chemical reaction model is creatively built.
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Thermal conductivity and heat capacity of β-Si3N4 are computed accurately.
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The appropriate thermo-chemical reaction rate is fitted and reaction element length is set to assure the constringency.
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The deepest ablated position was not the center of the ablated area due to plasma absorption.
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The simulation results demonstrate the thermo-chemical process cant be simplified to be physical phase transition.