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HU Zhuo-pei, CHENG Lai-fei, WEI Xi, et al. Numerical simulation for ICVI process of Si3N4P/ Si3N4 composites[J]. Acta Materiae Compositae Sinica, 2006, 23(5): 111-115.
Citation: HU Zhuo-pei, CHENG Lai-fei, WEI Xi, et al. Numerical simulation for ICVI process of Si3N4P/ Si3N4 composites[J]. Acta Materiae Compositae Sinica, 2006, 23(5): 111-115.
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Numerical simulation for ICVI process of Si3N4P/ Si3N4 composites

  • National Key Laboratory of Thermost ructural Composite Materials| NorthwesternPolytechnical University| Xipan 710072| China

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  • Received Date: October 08, 2005
  • Revised Date: March 16, 2006
    Abstract
  • A mathematical model according to st ructural feature of Si3N4 particle reinforcement and process characteristic of isothermal chemical vapor infilt ration ( ICVI) was proposed to numerically simulate the densification behaviors of Si3N4 particle reinforced Si3N4 composites. The ball-like pore model is developed to depict the st ructure ofSi3N4 particle reinforcement and the mass t ransfer equation of reagent s is used to characterize the concent ration profile in the preform. The corresponding experiment was done in order to testify the mathematical model . The calculated result s represent the same densification regularity as the experimental data does , and the curves of calculatedinfilt ration time and porosity are in agreement with the experimental ones , which indicates that the model developedhere is reasonable to characterize the ICVI process of Si3N4P / Si3N4 composites.
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