Sintering and crystallization of mullite in diphasic gels

L. Pach; A. Iratni; Z. Hrabe; S. Svetík; S. Komarneni

doi:10.1007/BF00351563

Sintering and crystallization of mullite in diphasic gels

L. Pach, A. Iratni, Z. Hrabe, S. Svetík, S. Komarneni

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18 Scopus citations

Abstract

Diphasic monolithic mullite gel of stoichiometric composition shows a multiple aggregation of colloidal SiO₂ (∼ 12 nm) and AlOOH (∼10 nm) particles. The identity of the colloidal particles is retained up to the crystallization of mullite at a temperature of 1240°C in unpressed or 1220°C in gels cold-isostatically pressed at 1.5 GPa. Intensive sintering is closely followed by crystallization of mullite. Both sintering and crystallization are apparently related with the formation of a silica continuum. Nucleation of mullite appears to occur at points of contact (interface) of SiO₂/δ-Al₂O₃ particles.

Original language	English (US)
Pages (from-to)	5490-5494
Number of pages	5
Journal	Journal of Materials Science
Volume	30
Issue number	21
DOIs	https://doi.org/10.1007/BF00351563
State	Published - Jan 1995

All Science Journal Classification (ASJC) codes

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1007/BF00351563

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title = "Sintering and crystallization of mullite in diphasic gels",

abstract = "Diphasic monolithic mullite gel of stoichiometric composition shows a multiple aggregation of colloidal SiO2 (∼ 12 nm) and AlOOH (∼10 nm) particles. The identity of the colloidal particles is retained up to the crystallization of mullite at a temperature of 1240°C in unpressed or 1220°C in gels cold-isostatically pressed at 1.5 GPa. Intensive sintering is closely followed by crystallization of mullite. Both sintering and crystallization are apparently related with the formation of a silica continuum. Nucleation of mullite appears to occur at points of contact (interface) of SiO2/δ-Al2O3 particles.",

author = "L. Pach and A. Iratni and Z. Hrabe and S. Svet{\'i}k and S. Komarneni",

year = "1995",

month = jan,

doi = "10.1007/BF00351563",

language = "English (US)",

volume = "30",

pages = "5490--5494",

journal = "Journal of Materials Science",

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T1 - Sintering and crystallization of mullite in diphasic gels

AU - Pach, L.

AU - Iratni, A.

AU - Hrabe, Z.

AU - Svetík, S.

AU - Komarneni, S.

PY - 1995/1

Y1 - 1995/1

N2 - Diphasic monolithic mullite gel of stoichiometric composition shows a multiple aggregation of colloidal SiO2 (∼ 12 nm) and AlOOH (∼10 nm) particles. The identity of the colloidal particles is retained up to the crystallization of mullite at a temperature of 1240°C in unpressed or 1220°C in gels cold-isostatically pressed at 1.5 GPa. Intensive sintering is closely followed by crystallization of mullite. Both sintering and crystallization are apparently related with the formation of a silica continuum. Nucleation of mullite appears to occur at points of contact (interface) of SiO2/δ-Al2O3 particles.

AB - Diphasic monolithic mullite gel of stoichiometric composition shows a multiple aggregation of colloidal SiO2 (∼ 12 nm) and AlOOH (∼10 nm) particles. The identity of the colloidal particles is retained up to the crystallization of mullite at a temperature of 1240°C in unpressed or 1220°C in gels cold-isostatically pressed at 1.5 GPa. Intensive sintering is closely followed by crystallization of mullite. Both sintering and crystallization are apparently related with the formation of a silica continuum. Nucleation of mullite appears to occur at points of contact (interface) of SiO2/δ-Al2O3 particles.

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ER -

Sintering and crystallization of mullite in diphasic gels

Abstract

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