JPS643074A - Production of high-density sintered boron nitride - Google Patents
Production of high-density sintered boron nitrideInfo
- Publication number
- JPS643074A JPS643074A JP62156563A JP15656387A JPS643074A JP S643074 A JPS643074 A JP S643074A JP 62156563 A JP62156563 A JP 62156563A JP 15656387 A JP15656387 A JP 15656387A JP S643074 A JPS643074 A JP S643074A
- Authority
- JP
- Japan
- Prior art keywords
- boron nitride
- nitrogen
- hexagonal system
- boron
- density 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
Links
Landscapes
- Ceramic Products (AREA)
Abstract
PURPOSE: To produce a high-density sintered boron nitride at low cost, by blending boron nitride powder of hexagonal system with specific amounts of an alkaline earth metallic compound and boron carbide, molding and burning in a nitrogen atmosphere.
CONSTITUTION: Boron nitride powder of hexagonal system ground pulverized into ≥about 5m2/g BET specific surface area is blended with 0.1W20wt.% alkaline earth metallic compound (calcium carbonate) and 0.1W20wt.% boron carbide (≤50μ particle size) and granulated. Then the granules are molded into a given shape, heated in nitrogen or in a nonoxidizing atmosphere containing nitrogen at a rate of heating of about 20W100°C/min to about 1,600W1,800°C, burnt for about 2W10hr and boron carbide is reacted with nitrogen to give boron nitride. Consequently, high-quality sintered boron nitride of hexagonal system is obtained.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62156563A JPH0742169B2 (en) | 1987-06-25 | 1987-06-25 | Method for producing high-density boron nitride sintered body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62156563A JPH0742169B2 (en) | 1987-06-25 | 1987-06-25 | Method for producing high-density boron nitride sintered body |
Publications (3)
Publication Number | Publication Date |
---|---|
JPS643074A true JPS643074A (en) | 1989-01-06 |
JPH013074A JPH013074A (en) | 1989-01-06 |
JPH0742169B2 JPH0742169B2 (en) | 1995-05-10 |
Family
ID=15630521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62156563A Expired - Lifetime JPH0742169B2 (en) | 1987-06-25 | 1987-06-25 | Method for producing high-density boron nitride sintered body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0742169B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112334408A (en) * | 2018-06-29 | 2021-02-05 | 电化株式会社 | Bulk boron nitride particles, boron nitride powder, method for producing boron nitride powder, resin composition, and heat-dissipating member |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3279173B1 (en) * | 2016-08-05 | 2021-05-26 | 3M Innovative Properties Company | Formed hexagonal boron nitride body, heat-treated hexagonal boron nitride body and processes for producing the same |
-
1987
- 1987-06-25 JP JP62156563A patent/JPH0742169B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112334408A (en) * | 2018-06-29 | 2021-02-05 | 电化株式会社 | Bulk boron nitride particles, boron nitride powder, method for producing boron nitride powder, resin composition, and heat-dissipating member |
Also Published As
Publication number | Publication date |
---|---|
JPH0742169B2 (en) | 1995-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080510 Year of fee payment: 13 |