Mechanical properties of sintered Si 3N 4 from powder produced by fluidized-bed direct silicon nitridation

Hiroyuki Y. Suzuki, Shunzo Tashima, Shoichi Kimura

Research output: Contribution to journalArticle

Abstract

Si 3N 4 powder, produced by the fluidized-bed direct nitridation of silicon, was blended with water, compacted by pressure slip casting, and sintered under a pressurized nitrogen atmosphere. Compacts made from the powder showed roughly the same sinterability as those made from commercially available imide-process powder, yielding a hardness of H v 1570, a fracture toughness of 7.2 MPa√m, and a three-point bending strength of 1062 MPa, highest values attainable with Si 3N 4. The powder produced by the fluidized-bed direct nitridation may replace the Si 3N 4 powder from the other process, when water is used for preparing slips. A processing rout is proposed, which may realize a substantial reduction of total cost for producing sintered Si 3N 4 parts.

Original languageEnglish
Pages (from-to)774-777
Number of pages4
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume113
Issue number1324
Publication statusPublished - Dec 2005
Externally publishedYes

Fingerprint

Nitridation
Silicon
Powders
Fluidized beds
beds
mechanical properties
Mechanical properties
silicon
slip casting
Imides
Water
flexural strength
imides
fracture strength
Bending strength
water
Fracture toughness
Casting
slip
Nitrogen

Keywords

  • Fluidized-bed direct nitridation
  • Pressure casting
  • Silicon nitride

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

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title = "Mechanical properties of sintered Si 3N 4 from powder produced by fluidized-bed direct silicon nitridation",
abstract = "Si 3N 4 powder, produced by the fluidized-bed direct nitridation of silicon, was blended with water, compacted by pressure slip casting, and sintered under a pressurized nitrogen atmosphere. Compacts made from the powder showed roughly the same sinterability as those made from commercially available imide-process powder, yielding a hardness of H v 1570, a fracture toughness of 7.2 MPa√m, and a three-point bending strength of 1062 MPa, highest values attainable with Si 3N 4. The powder produced by the fluidized-bed direct nitridation may replace the Si 3N 4 powder from the other process, when water is used for preparing slips. A processing rout is proposed, which may realize a substantial reduction of total cost for producing sintered Si 3N 4 parts.",
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T1 - Mechanical properties of sintered Si 3N 4 from powder produced by fluidized-bed direct silicon nitridation

AU - Suzuki, Hiroyuki Y.

AU - Tashima, Shunzo

AU - Kimura, Shoichi

PY - 2005/12

Y1 - 2005/12

N2 - Si 3N 4 powder, produced by the fluidized-bed direct nitridation of silicon, was blended with water, compacted by pressure slip casting, and sintered under a pressurized nitrogen atmosphere. Compacts made from the powder showed roughly the same sinterability as those made from commercially available imide-process powder, yielding a hardness of H v 1570, a fracture toughness of 7.2 MPa√m, and a three-point bending strength of 1062 MPa, highest values attainable with Si 3N 4. The powder produced by the fluidized-bed direct nitridation may replace the Si 3N 4 powder from the other process, when water is used for preparing slips. A processing rout is proposed, which may realize a substantial reduction of total cost for producing sintered Si 3N 4 parts.

AB - Si 3N 4 powder, produced by the fluidized-bed direct nitridation of silicon, was blended with water, compacted by pressure slip casting, and sintered under a pressurized nitrogen atmosphere. Compacts made from the powder showed roughly the same sinterability as those made from commercially available imide-process powder, yielding a hardness of H v 1570, a fracture toughness of 7.2 MPa√m, and a three-point bending strength of 1062 MPa, highest values attainable with Si 3N 4. The powder produced by the fluidized-bed direct nitridation may replace the Si 3N 4 powder from the other process, when water is used for preparing slips. A processing rout is proposed, which may realize a substantial reduction of total cost for producing sintered Si 3N 4 parts.

KW - Fluidized-bed direct nitridation

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