Diffusion Mechanism of Energy Flow in Multi-heat-source Synthesis of SiC  

作　　者：陈杰 WANG Xiaogang LI Yang 

机构地区：[1]School of Material Science and Engineering, Xi'an University of Science and Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2015年第2期266-270,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.51074123);the Scientif ic Research Program Funded by Shaanxi Provincial Education Department(No.12JK0785);the Cooperation Project of Industry,Academe and Research of Yulin City(2011);the Ph D Foundation of Xi’an University of Science and Technology(No.2011QDJ022)

摘　　要：Through the experiments and the numerical simulation of temperature field in multi-heatsource synthesis Si C furnace, in order to research the feature point in multi-heat-source synthesis furnace, the variation law of heat fl ux was studied and the multi-directional energy fl ow diffusion mechanism was revealed. The results show that, due to the shielding action between the heat-source and the superposition effect of thermal fields, the insulating effect is best in multi-heat-source synthesis furnace. The heat emission effect is good outside the common area between heat-sources, but the heat storage is poor. Compared with the synthesis furnace that heat source is parallelly arranged, the furnace of stereoscopic arrangement has a more obvious heat stacking effect and better heat preservation effect, but the air permeability of heat source connecting regions is worse. In the case with the same ingredients, the resistance to thermal diffusion and mass diffusion is higher in heat source connecting regions.Through the experiments and the numerical simulation of temperature field in multi-heatsource synthesis Si C furnace, in order to research the feature point in multi-heat-source synthesis furnace, the variation law of heat fl ux was studied and the multi-directional energy fl ow diffusion mechanism was revealed. The results show that, due to the shielding action between the heat-source and the superposition effect of thermal fields, the insulating effect is best in multi-heat-source synthesis furnace. The heat emission effect is good outside the common area between heat-sources, but the heat storage is poor. Compared with the synthesis furnace that heat source is parallelly arranged, the furnace of stereoscopic arrangement has a more obvious heat stacking effect and better heat preservation effect, but the air permeability of heat source connecting regions is worse. In the case with the same ingredients, the resistance to thermal diffusion and mass diffusion is higher in heat source connecting regions.

关 键 词：multi-heat-source synthesis SiC temperature field energy diffusion mechanism heat flux 

分 类 号：TQ163.4[化学工程—高温制品工业]