JPS6469568A - Sintered material of silicon nitride and production thereof - Google Patents

Sintered material of silicon nitride and production thereof

Info

Publication number
JPS6469568A
JPS6469568A JP62225539A JP22553987A JPS6469568A JP S6469568 A JPS6469568 A JP S6469568A JP 62225539 A JP62225539 A JP 62225539A JP 22553987 A JP22553987 A JP 22553987A JP S6469568 A JPS6469568 A JP S6469568A
Authority
JP
Japan
Prior art keywords
powder
si3n4
al2o3
sintered material
precursor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62225539A
Other languages
Japanese (ja)
Inventor
Tatsuhiko Suzuki
Susumu Kawakita
Keizo Masuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP62225539A priority Critical patent/JPS6469568A/en
Publication of JPS6469568A publication Critical patent/JPS6469568A/en
Pending legal-status Critical Current

Links

Landscapes

  • Ceramic Products (AREA)

Abstract

PURPOSE:To obtain a high-density sintered material of silicon nitride having high strength and excellent toughness, by blending Si3N4 powder of alpha type with Y2O3 powder and Al2O3 in a specific ratio, molding and sintering in an inert gas. CONSTITUTION:Si3N4 powder comprising >=75wt.% Si3N4 of alpha type is blended with Y2O3 powder or a precursor thereof and Al2O3 powder or a precursor thereof in such a way that the amount of the Y2O3 powder or a precursor thereof is 8-20wt.% calculated as Y2O3 and the amount of the Al2O3 powder or a precursor thereof calculated as Al2O3 is in the weight ratio of (Y2/O3/Al2O3)=5-30. Then the mixture is molded and sintered in an inert gas at 1,600-1,900 deg.C. Si3N4 consists of alpha type and beta type and Si3N4 comprising >=75% alpha type is used in the method. When the amount of Si3N4 of alpha type is <75wt.%, a sintered material slightly has pillar-shaped texture and a sintered material having high toughness is not obtained.
JP62225539A 1987-09-09 1987-09-09 Sintered material of silicon nitride and production thereof Pending JPS6469568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62225539A JPS6469568A (en) 1987-09-09 1987-09-09 Sintered material of silicon nitride and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62225539A JPS6469568A (en) 1987-09-09 1987-09-09 Sintered material of silicon nitride and production thereof

Publications (1)

Publication Number Publication Date
JPS6469568A true JPS6469568A (en) 1989-03-15

Family

ID=16830879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62225539A Pending JPS6469568A (en) 1987-09-09 1987-09-09 Sintered material of silicon nitride and production thereof

Country Status (1)

Country Link
JP (1) JPS6469568A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100422729B1 (en) * 2001-05-07 2004-03-12 현대자동차주식회사 The Composition of High Toughness Silicon Nitride for Engine Parts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100422729B1 (en) * 2001-05-07 2004-03-12 현대자동차주식회사 The Composition of High Toughness Silicon Nitride for Engine Parts

Similar Documents

Publication Publication Date Title
ES475258A1 (en) Process for manufacturing dense polycrystalline shaped articles of boron carbide by pressureless sintering.
DE3772371D1 (en) SILICON NITRIDE-SILICON CARBIDE MATERIAL AND METHOD FOR THE PRODUCTION THEREOF.
KR960007505A (en) Manufacturing method of high density titanium carbide ceramic using preceramic polymer binder
JPS6469568A (en) Sintered material of silicon nitride and production thereof
KR960004291A (en) Process for producing high density titanium diboride ceramic using preceramic polymer binder
JPS5446109A (en) Hard alloy and its preparation
JPS643068A (en) Production of alumina silica-based sintered material
US5545362A (en) Production method of sintered silicon nitride
JPS643075A (en) Sintered material of aluminum nitride and production thereof
EP0172764A3 (en) Ceramic sintered body
JPS6461359A (en) Silicon nitride sintered compact and production thereof
JPS6414167A (en) High-strength aluminum oxide-based sintered body and its production
Wotting et al. A Sintered Material Based on Si sub 3 N sub 4 and Processes for Its Production
JPS6452337A (en) Manufacture of superconductive wire
JPS5663807A (en) Manufacture of silicon nitride powder
JPS6433050A (en) High density high temperature oxide superconducting material and its production
JPS6483557A (en) Production of sintered superconducting ceramic having high strength
JPS6428280A (en) Sintered aluminum nitride and production thereof
Uy et al. Isostatic Densification and Strengthening of Reaction Sintered Si sub 3 N sub 4
Kamagai et al. Ceramic Sintered Body
JPS55116603A (en) Manufacture of ceramic powder
Boskovic et al. Sintering and Some Properties of Si sub 3 N sub 4 Based Ceramics
JPS6424067A (en) Production of compound oxide superconductor
JPS5457499A (en) Production of alpha-type silicon nitride
JPS6469569A (en) Production of sintered material of silicon nitride