Fabrication of silicon nitride ceramics by electrophoretic deposition

Tetsuo Uchikoshi; Yoko Fukada; Tohru S. Suzuki; Patrick S. Nicholson

doi:10.2497/jjspm.47.1021

Fabrication of silicon nitride ceramics by electrophoretic deposition

Tetsuo Uchikoshi, Yoko Fukada, Tohru S. Suzuki, Patrick S. Nicholson

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

1 Citation (Scopus)

Abstract

Surface coating of Si₃N₄, powder with an alumina precursor was achieved by a sol-gel method using aluminum isopropoxide. Electrophoretic data showed the surface-coated Si₃N₄ powder behaved like alumina. Consolidation of the surface-coated powder was attempted by an electrophoretic deposition (EPD) technique. EPD rate was improved for the surface-coated powder. Sintering characteristics and fracture toughness were investigated for EPDed compacts. It was demonstrated that the surface coating of Si₃N₄ powder with alumina precursor had the advantage of not only the improvement of suspension stability, but also the addition of sintering aid.

Original language	English
Pages (from-to)	1021-1025
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	47
Issue number	9
DOIs	https://doi.org/10.2497/jjspm.47.1021
Publication status	Published - 2000 Sept
Externally published	Yes

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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10.2497/jjspm.47.1021

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abstract = "Surface coating of Si3N4, powder with an alumina precursor was achieved by a sol-gel method using aluminum isopropoxide. Electrophoretic data showed the surface-coated Si3N4 powder behaved like alumina. Consolidation of the surface-coated powder was attempted by an electrophoretic deposition (EPD) technique. EPD rate was improved for the surface-coated powder. Sintering characteristics and fracture toughness were investigated for EPDed compacts. It was demonstrated that the surface coating of Si3N4 powder with alumina precursor had the advantage of not only the improvement of suspension stability, but also the addition of sintering aid.",

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AU - Uchikoshi, Tetsuo

AU - Fukada, Yoko

AU - Suzuki, Tohru S.

AU - Nicholson, Patrick S.

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Y1 - 2000/9

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AB - Surface coating of Si3N4, powder with an alumina precursor was achieved by a sol-gel method using aluminum isopropoxide. Electrophoretic data showed the surface-coated Si3N4 powder behaved like alumina. Consolidation of the surface-coated powder was attempted by an electrophoretic deposition (EPD) technique. EPD rate was improved for the surface-coated powder. Sintering characteristics and fracture toughness were investigated for EPDed compacts. It was demonstrated that the surface coating of Si3N4 powder with alumina precursor had the advantage of not only the improvement of suspension stability, but also the addition of sintering aid.

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Fabrication of silicon nitride ceramics by electrophoretic deposition

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