JPS6472967A - Production of high-density silicon nitride member - Google Patents

Production of high-density silicon nitride member

Info

Publication number
JPS6472967A
JPS6472967A JP62228350A JP22835087A JPS6472967A JP S6472967 A JPS6472967 A JP S6472967A JP 62228350 A JP62228350 A JP 62228350A JP 22835087 A JP22835087 A JP 22835087A JP S6472967 A JPS6472967 A JP S6472967A
Authority
JP
Japan
Prior art keywords
silicon nitride
density
sintered body
nitride member
sintered
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
JP62228350A
Other languages
Japanese (ja)
Other versions
JPH0545552B2 (en
Inventor
Katsutoshi Yoneya
Hiroyasu Ota
Yasuhiro Itsudo
Takao Fujikawa
Junichi Miyanaga
Hiroshi Okada
Fukusaburo Yamamoto
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP62228350A priority Critical patent/JPS6472967A/en
Publication of JPS6472967A publication Critical patent/JPS6472967A/en
Publication of JPH0545552B2 publication Critical patent/JPH0545552B2/ja
Granted legal-status Critical Current

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  • Ceramic Products (AREA)

Abstract

PURPOSE:To obtain the title high-density sicon nitride member having high strength and an excellent surface property by exerting a high gaseous nitrogen pressure on a silicon nitride sintered body sintered to higher than a specified density at a prescribed temp. in the presence of a metal selected from Cr, Mo, and W to density the sintered body. CONSTITUTION:A silicon nitride sintered body sintered to >=95% relative density is arranged in the atmosphere wherein at least one kind of metal (e.g., foil and crucible) selected from chromium, molybdenum, and tungsten is present. A gaseous nitrogen pressure at >=300kgf/cm<2> is exerted on the sintered body at >=1,600 deg.C to density the body, and a high-density silicon nitride member is obtained. By this method, since molybdenum, tungsten or chromium are present as the carbon adsorbent, the silicon nitride sintered body can be densitied without infiltration of carbon into the body, and a highly homogeneous silicon nitride member can be obtained.
JP62228350A 1987-09-14 1987-09-14 Production of high-density silicon nitride member Granted JPS6472967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62228350A JPS6472967A (en) 1987-09-14 1987-09-14 Production of high-density silicon nitride member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62228350A JPS6472967A (en) 1987-09-14 1987-09-14 Production of high-density silicon nitride member

Publications (2)

Publication Number Publication Date
JPS6472967A true JPS6472967A (en) 1989-03-17
JPH0545552B2 JPH0545552B2 (en) 1993-07-09

Family

ID=16875084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62228350A Granted JPS6472967A (en) 1987-09-14 1987-09-14 Production of high-density silicon nitride member

Country Status (1)

Country Link
JP (1) JPS6472967A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100408671B1 (en) * 1999-12-24 2003-12-11 주식회사 포스코 Device for removing filler of ladle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6163570A (en) * 1984-09-04 1986-04-01 工業技術院長 Manufacture of silicon nitride sintered body
JPS61256979A (en) * 1985-05-10 1986-11-14 住友金属工業株式会社 Manufacture of silicon nitride sintered body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6163570A (en) * 1984-09-04 1986-04-01 工業技術院長 Manufacture of silicon nitride sintered body
JPS61256979A (en) * 1985-05-10 1986-11-14 住友金属工業株式会社 Manufacture of silicon nitride sintered body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100408671B1 (en) * 1999-12-24 2003-12-11 주식회사 포스코 Device for removing filler of ladle

Also Published As

Publication number Publication date
JPH0545552B2 (en) 1993-07-09

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term