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Calculation of Infiltration of AlSi12 Alloys into Si Porous Preforms with General and Modified Infiltration Equations
Transport in Porous Media ( IF 2.376 ) Pub Date : 2019-12-14 , DOI: 10.1007/s11242-019-01377-w
Ruizhe Liu; Haidong Zhao; Bin Xie

A high-resolution (~ 1 μm) three-dimensional (3D) X-ray micro-computed tomography (μ-CT) was used to nondestructively detect pore characteristics in silicon particle preforms with different starch contents (10%, 20% and 30%) and particle sizes (20, 50 and 90 μm). A pressure infiltration equipment was made to infiltrate the preforms. The preforms were infiltrated at constant temperature (800 °C) and pressure (400 kPa) with different pressure-applied times (3, 5, 8, 11 and 15 s). Since the discrepancy between the infiltration heights measured in the experiment and calculated with the general infiltration equation was found, a modified infiltration equation was proposed considering the pore characteristic parameters from 3D μ-CT. The results of the modified infiltration equation showed good agreement with the experiment.
更新日期:2019-12-14

 

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