JPS5742515A - Production of silicon nitride - Google Patents

Production of silicon nitride

Info

Publication number
JPS5742515A
JPS5742515A JP11846380A JP11846380A JPS5742515A JP S5742515 A JPS5742515 A JP S5742515A JP 11846380 A JP11846380 A JP 11846380A JP 11846380 A JP11846380 A JP 11846380A JP S5742515 A JPS5742515 A JP S5742515A
Authority
JP
Japan
Prior art keywords
silicon nitride
silicic acid
produce
sol
heated
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
JP11846380A
Other languages
Japanese (ja)
Inventor
Masami Yamaguchi
Yoshiro Tazane
Ryoji Kitahama
Isamu Iwami
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.)
Asahi Dow Ltd
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Dow Ltd
Asahi Chemical Industry Co Ltd
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 Asahi Dow Ltd, Asahi Chemical Industry Co Ltd filed Critical Asahi Dow Ltd
Priority to JP11846380A priority Critical patent/JPS5742515A/en
Priority to US06/294,027 priority patent/US4396587A/en
Priority to DE8181303928T priority patent/DE3166037D1/en
Priority to EP81303928A priority patent/EP0047143B1/en
Publication of JPS5742515A publication Critical patent/JPS5742515A/en
Pending legal-status Critical Current

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  • Ceramic Products (AREA)

Abstract

PURPOSE: When a raw material to be nitrided is heated in a nitrogen atmosphere to produce silicon nitride, a mixture resulting from treatment of a carbonaceous powder with a silicic acid solution is used to produce high-purity α-type silicon nitride readily.
CONSTITUTION: An aqueous alkali silicate is acidolyzed or dealkalized or a hydrolyzable silicon compound is hydrolyzed to prepare a silicic acid aqueous solution or organic solvent solution or a sol. A carbonaceous powder such as carbon black, graphite or activated carbon is added to the silicic acid solution or sol at a weight ratio of 1pt. of SiO2 to 0.3W5 of carbon. Then, the resultant mixture is heated in a nonoxidative atmosphere containing nitrogen at about 1,300W1,600°C to produce the objective silicon nitride of at least 80% α-type silicon nitride content.
COPYRIGHT: (C)1982,JPO&Japio
JP11846380A 1980-08-29 1980-08-29 Production of silicon nitride Pending JPS5742515A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP11846380A JPS5742515A (en) 1980-08-29 1980-08-29 Production of silicon nitride
US06/294,027 US4396587A (en) 1980-08-29 1981-08-18 Method for manufacture of silicon nitride
DE8181303928T DE3166037D1 (en) 1980-08-29 1981-08-27 Method for manufacture of silicon nitride
EP81303928A EP0047143B1 (en) 1980-08-29 1981-08-27 Method for manufacture of silicon nitride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11846380A JPS5742515A (en) 1980-08-29 1980-08-29 Production of silicon nitride

Publications (1)

Publication Number Publication Date
JPS5742515A true JPS5742515A (en) 1982-03-10

Family

ID=14737275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11846380A Pending JPS5742515A (en) 1980-08-29 1980-08-29 Production of silicon nitride

Country Status (1)

Country Link
JP (1) JPS5742515A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104006A (en) * 1981-12-11 1983-06-21 Central Glass Co Ltd Preparation of silicon nitride powder
JP2009161376A (en) * 2007-12-28 2009-07-23 Toda Kogyo Corp Manufacturing method of silicon nitride powder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104006A (en) * 1981-12-11 1983-06-21 Central Glass Co Ltd Preparation of silicon nitride powder
JP2009161376A (en) * 2007-12-28 2009-07-23 Toda Kogyo Corp Manufacturing method of silicon nitride powder

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