Fabrication of silicon nitride ceramics by electrophoretic deposition

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

Research output: Contribution to journalArticle

Abstract

Surface coating of Si 3 N 4 , powder with an alumina precursor was achieved by a sol-gel method using aluminum isopropoxide. Electrophoretic data showed the surface-coated Si 3 N 4 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 Si 3 N 4 powder with alumina precursor had the advantage of not only the improvement of suspension stability, but also the addition of sintering aid.

Original languageEnglish
Pages (from-to)1021-1025
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume47
Issue number9
DOIs
Publication statusPublished - 2000 Jan 1
Externally publishedYes

Fingerprint

Silicon nitride
Powders
Aluminum Oxide
Fabrication
Alumina
Sintering
Coatings
Deposition rates
Aluminum
Consolidation
Sol-gel process
Fracture toughness
Suspensions
silicon nitride

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Fabrication of silicon nitride ceramics by electrophoretic deposition. / Uchikoshi, Tetsuo; Fukada, Yoko; Suzuki, Tohru; Nicholson, Patrick S.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 47, No. 9, 01.01.2000, p. 1021-1025.

Research output: Contribution to journalArticle

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