FINITE ELEMENT MODELING OF TEMPERATURE DISTRIBUTION IN FIELD ACTIVATED SINTERING OF MoSi2-SiC COMPOSITE
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Finite element modeling of temperature distribution in field activated sintered(FAS) MoSi_2-SiC composite was made on the basis of modeling for FAS process.The results show that FAS temperature field is determined by a combined effect of Joule heat of electric field,heat released by chemical reaction,and transferring heat in die-specimen system.Due to overlap of heats produced by Joule effect and chemical reactions,the center temperature is the highest in the sample,a radius and axial temperature gradients are formed,which significantly affect the uniformity of mierostructure in the sizes and densifications of grains.The simulation results provide a theoretical support on temperature gradient controlling,which help to prepare dense and fine grained bulk materials.Keywords:
Temperature Gradient
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