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首页> 外文期刊>Transport in porous media >Calculation of Infiltration of AlSi12 Alloys into Si Porous Preforms with General and Modified Infiltration Equations
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Calculation of Infiltration of AlSi12 Alloys into Si Porous Preforms with General and Modified Infiltration Equations

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A high-resolution (~ 1 mu m) three-dimensional (3D) X-ray micro-computed tomography (mu-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 mu m). A pressure infiltration equipment was made to infiltrate the preforms. The preforms were infiltrated at constant temperature (800 degrees 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 mu-CT. The results of the modified infiltration equation showed good agreement with the experiment.

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