JPS6487566A - Production of silicon nitride-based sintered body - Google Patents

Production of silicon nitride-based sintered body

Info

Publication number
JPS6487566A
JPS6487566A JP62247035A JP24703587A JPS6487566A JP S6487566 A JPS6487566 A JP S6487566A JP 62247035 A JP62247035 A JP 62247035A JP 24703587 A JP24703587 A JP 24703587A JP S6487566 A JPS6487566 A JP S6487566A
Authority
JP
Japan
Prior art keywords
heat
compact
sintered body
excess oxygen
treated
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.)
Granted
Application number
JP62247035A
Other languages
Japanese (ja)
Other versions
JP2631108B2 (en
Inventor
Masahiro Sato
Makoto Yoshida
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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 Kyocera Corp filed Critical Kyocera Corp
Priority to JP62247035A priority Critical patent/JP2631108B2/en
Publication of JPS6487566A publication Critical patent/JPS6487566A/en
Application granted granted Critical
Publication of JP2631108B2 publication Critical patent/JP2631108B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Ceramic Products (AREA)

Abstract

PURPOSE:To produce the title sintered body having excellent strength and oxidation resistance at high temp. and having high toughness by compacting the starting material contg. Si3N4 powder, the compd. of a group IIIa element, and excess oxygen, heat-treating the compact at a specified temp., and further subjecting the heat-treated compact to the hot hydrostatic press sintering at a specified temp. CONSTITUTION:The three-component mixed powder contg. 85-95mol.% Si3N4, 0.5-5mol.% of the compd. (oxides are most preferable) of an element (M) (e.g., Sc, Er, and Yb) selected from group IIIa elements, expressed in terms of an oxide (M2O3), and excess oxygen and wherein the molar ratio of the excess oxygen expressed in terms of SiO2 to the M2O3 is controlled to >=1 is used as the starting material and compacted. The compact is heat-treated at 1,550-1,850 deg.C. The heat-treated compact is subjected to the hot hydrostatic press sintering at 1,650-2,000 deg.C. By this method, the title sintered body having excellent strength and oxidation resistance at high temp. and having high toughness can be obtained.
JP62247035A 1987-09-30 1987-09-30 Manufacturing method of silicon nitride sintered body Expired - Fee Related JP2631108B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62247035A JP2631108B2 (en) 1987-09-30 1987-09-30 Manufacturing method of silicon nitride sintered body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62247035A JP2631108B2 (en) 1987-09-30 1987-09-30 Manufacturing method of silicon nitride sintered body

Publications (2)

Publication Number Publication Date
JPS6487566A true JPS6487566A (en) 1989-03-31
JP2631108B2 JP2631108B2 (en) 1997-07-16

Family

ID=17157442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62247035A Expired - Fee Related JP2631108B2 (en) 1987-09-30 1987-09-30 Manufacturing method of silicon nitride sintered body

Country Status (1)

Country Link
JP (1) JP2631108B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04209763A (en) * 1990-12-07 1992-07-31 Kyocera Corp Silicon nitride sintered material for cutting tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105957A (en) * 1985-10-31 1987-05-16 京セラ株式会社 Silicon nitride base sintered body and manufacture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105957A (en) * 1985-10-31 1987-05-16 京セラ株式会社 Silicon nitride base sintered body and manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04209763A (en) * 1990-12-07 1992-07-31 Kyocera Corp Silicon nitride sintered material for cutting tool

Also Published As

Publication number Publication date
JP2631108B2 (en) 1997-07-16

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees