Reactive Infiltration of Silicon Melt Through Microporous Amorphous Carbon Preforms (Paperback) (ISBN-13: 9781289279936)

The kinetics of unidirectional capillary infiltration of silicon melt into microporous carbon preforms have been investigated as a function of the pore morphology and melt temperature. The infiltrated specimens showed alternating bands of dark and bright regions, which corresponded to the unreacted free carbon and free silicon regions, respectively. The decrease in the infiltration front velocity for increasing infiltration distances, is in qualitative agreement with the closed-form solution of capillarity driven fluid flow through constant cross section cylindrical pores. However, drastic changes in the thermal response and infiltration front morphologies were observed for minute differences in the preforms microstructure. This suggests the need for a dynamic percolation model that would account for the exothermic nature of the silicon-carbon chemical reaction and the associated pore closing phenomenon.

Author: P. Sangsuwan
ISBN-10: 1289279934
ISBN-13: 9781289279936
Publisher: Bibliogov
Language: English
Published: 08/06/2013
Pages: 38
Format: Paperback
Weight: 0.19lbs
Size: 9.69h x 7.44w x 0.08d