Processing of nanocomposite silicon nitride-mullite-alumina by reaction sintering

Y. Sakka; Ilhan A. Aksay

doi:10.1016/0965-9773(94)90076-0

Processing of nanocomposite silicon nitride-mullite-alumina by reaction sintering

Y. Sakka, Ilhan A. Aksay

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Abstract

We describe a new method for processing Si₃N₄mulliteAl₂O₃ nanocomposites by reaction sintering of the green compacts after partial oxidation treatment. Bimodal powder compacts used in this process were prepared by a colloidal filtration method. Si₃N₄ and Al₂O₃ powders were dispersed in aqueous suspensions at pH=10 with the aid of an electrosteric stabilizer, polymethacrylic acid. A binary mixture of Al₂O₃ powder was used to attain high green densities. This process results in the following morphology: nanometer-sized Si₃N₄ particles that are distributed in the mullite phase which is embedded in an Al₂O₃ matrix.

Original language	English (US)
Pages (from-to)	169-182
Number of pages	14
Journal	Nanostructured Materials
Volume	4
Issue number	2
DOIs	https://doi.org/10.1016/0965-9773(94)90076-0
State	Published - 1994

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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10.1016/0965-9773(94)90076-0

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@article{bc96adb56b654001b9b9776f21b5869d,

title = "Processing of nanocomposite silicon nitride-mullite-alumina by reaction sintering",

abstract = "We describe a new method for processing Si3N4mulliteAl2O3 nanocomposites by reaction sintering of the green compacts after partial oxidation treatment. Bimodal powder compacts used in this process were prepared by a colloidal filtration method. Si3N4 and Al2O3 powders were dispersed in aqueous suspensions at pH=10 with the aid of an electrosteric stabilizer, polymethacrylic acid. A binary mixture of Al2O3 powder was used to attain high green densities. This process results in the following morphology: nanometer-sized Si3N4 particles that are distributed in the mullite phase which is embedded in an Al2O3 matrix.",

author = "Y. Sakka and Aksay, {Ilhan A.}",

note = "Funding Information: This work was supported by the U.S. Air Force Office of Scientific Research under Grant No. AFOSR-F49620-93-1-0259. The main part of this work was conducted at the Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195. We acknowledge M. Sarikaya and J. Liu of the University of Washington for their help with TEM observation and T. Takahashi of NRIM for his help with measuring the rheological properties. We also wish to thank D.D. Bidinger, L. Bergstr0m, M. Yasrebi, C.H. Schilling and K. Shinozaki for the help in performing the experiment. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

year = "1994",

doi = "10.1016/0965-9773(94)90076-0",

language = "English (US)",

volume = "4",

pages = "169--182",

journal = "Nanostructured Materials",

issn = "0965-9773",

publisher = "Pergamon Press Ltd.",

number = "2",

}

TY - JOUR

T1 - Processing of nanocomposite silicon nitride-mullite-alumina by reaction sintering

AU - Sakka, Y.

AU - Aksay, Ilhan A.

N1 - Funding Information: This work was supported by the U.S. Air Force Office of Scientific Research under Grant No. AFOSR-F49620-93-1-0259. The main part of this work was conducted at the Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195. We acknowledge M. Sarikaya and J. Liu of the University of Washington for their help with TEM observation and T. Takahashi of NRIM for his help with measuring the rheological properties. We also wish to thank D.D. Bidinger, L. Bergstr0m, M. Yasrebi, C.H. Schilling and K. Shinozaki for the help in performing the experiment. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 1994

Y1 - 1994

N2 - We describe a new method for processing Si3N4mulliteAl2O3 nanocomposites by reaction sintering of the green compacts after partial oxidation treatment. Bimodal powder compacts used in this process were prepared by a colloidal filtration method. Si3N4 and Al2O3 powders were dispersed in aqueous suspensions at pH=10 with the aid of an electrosteric stabilizer, polymethacrylic acid. A binary mixture of Al2O3 powder was used to attain high green densities. This process results in the following morphology: nanometer-sized Si3N4 particles that are distributed in the mullite phase which is embedded in an Al2O3 matrix.

AB - We describe a new method for processing Si3N4mulliteAl2O3 nanocomposites by reaction sintering of the green compacts after partial oxidation treatment. Bimodal powder compacts used in this process were prepared by a colloidal filtration method. Si3N4 and Al2O3 powders were dispersed in aqueous suspensions at pH=10 with the aid of an electrosteric stabilizer, polymethacrylic acid. A binary mixture of Al2O3 powder was used to attain high green densities. This process results in the following morphology: nanometer-sized Si3N4 particles that are distributed in the mullite phase which is embedded in an Al2O3 matrix.

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U2 - 10.1016/0965-9773(94)90076-0

DO - 10.1016/0965-9773(94)90076-0

M3 - Article

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SN - 0965-9773

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EP - 182

JO - Nanostructured Materials

JF - Nanostructured Materials

IS - 2

ER -

Processing of nanocomposite silicon nitride-mullite-alumina by reaction sintering

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