Reactive Infiltration of Silicon Melt Through Microporous Amorphous Carbon Preforms

P. Sangsuwan; Jorge E. Gatica; M. Singh; R. Dickerson

doi:10.1007/s11663-999-0099-1

Reactive Infiltration of Silicon Melt Through Microporous Amorphous Carbon Preforms

P. Sangsuwan
, Jorge E. Gatica
, M. Singh
, R. Dickerson

3M Thailand Limited
NYMA NASA Lewis Group, Inc.,
Los Alamos National Laboratories

Research output: Contribution to journal › Article › peer-review

Abstract

The kinetics of unidirectional capillary infiltration of silicon melt into microporous carbon preforms has 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 preform's 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.

Original language	American English
Journal	Metallurgical and Materials Transactions B: Physical Metallurgy and Materials Science
Volume	30
DOIs	https://doi.org/10.1007/s11663-999-0099-1
State	Published - Oct 1 1999

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Materials Science and Engineering

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title = "Reactive Infiltration of Silicon Melt Through Microporous Amorphous Carbon Preforms",

abstract = " The kinetics of unidirectional capillary infiltration of silicon melt into microporous carbon preforms has 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 preform's 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 and Gatica, \{Jorge E.\} and M. Singh and R. Dickerson",

note = "Sangsuwan, P; Tewari, SN; Gatica, JE; Singh, M; Dickerson, R. (1999). Reactive Infiltration of Silicon Melt Through Microporous Amorphous Carbon Preforms. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science 30, 933-944.",

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doi = "10.1007/s11663-999-0099-1",

language = "American English",

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T1 - Reactive Infiltration of Silicon Melt Through Microporous Amorphous Carbon Preforms

AU - Sangsuwan, P.

AU - Gatica, Jorge E.

AU - Singh, M.

AU - Dickerson, R.

N1 - Sangsuwan, P; Tewari, SN; Gatica, JE; Singh, M; Dickerson, R. (1999). Reactive Infiltration of Silicon Melt Through Microporous Amorphous Carbon Preforms. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science 30, 933-944.

PY - 1999/10/1

Y1 - 1999/10/1

N2 - The kinetics of unidirectional capillary infiltration of silicon melt into microporous carbon preforms has 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 preform's 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.

AB - The kinetics of unidirectional capillary infiltration of silicon melt into microporous carbon preforms has 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 preform's 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.

UR - https://engagedscholarship.csuohio.edu/encbe_facpub/16

U2 - 10.1007/s11663-999-0099-1

DO - 10.1007/s11663-999-0099-1

M3 - Article

VL - 30

JO - Metallurgical and Materials Transactions B: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions B: Physical Metallurgy and Materials Science

ER -

Reactive Infiltration of Silicon Melt Through Microporous Amorphous Carbon Preforms

Abstract

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