GB1481026A - Production of large boron nitride particles - Google Patents
Production of large boron nitride particlesInfo
- Publication number
- GB1481026A GB1481026A GB33346/74A GB3334674A GB1481026A GB 1481026 A GB1481026 A GB 1481026A GB 33346/74 A GB33346/74 A GB 33346/74A GB 3334674 A GB3334674 A GB 3334674A GB 1481026 A GB1481026 A GB 1481026A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boron nitride
- mixture
- nitride particles
- particle size
- particles
- 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.)
- Expired
Links
- 239000002245 particle Substances 0.000 title abstract 8
- 229910052582 BN Inorganic materials 0.000 title abstract 6
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 title abstract 6
- 239000000203 mixture Substances 0.000 abstract 5
- 150000004767 nitrides Chemical class 0.000 abstract 3
- -1 alkali metal nitrides Chemical class 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 1
- 229910052787 antimony Inorganic materials 0.000 abstract 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- IDBFBDSKYCUNPW-UHFFFAOYSA-N lithium nitride Chemical compound [Li]N([Li])[Li] IDBFBDSKYCUNPW-UHFFFAOYSA-N 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/064—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with boron
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/38—Nitrides
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B9/00—Single-crystal growth from melt solutions using molten solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Pyridine Compounds (AREA)
Abstract
1481026 Boron nitride particles GENERAL ELECTRIC CO 29 July 1974 [6 Sept 1973] 33346/74 Heading ClA Soft hexagonal boron nitride particles of larger than 50Á average particle size are produced by a method which comprises: (a) mixing soft hexagonal boron nitride particles of less than 50 Á average particle size with a metallic nitride selected from the group consisting of alkali metal nitrides, alkaline earth metal nitrides, nitrides of tin, lead and antimony, and mixtures thereof, preferably lithium nitride, the boron nitride comprising 50-85 mole per cent of the boron nitride-metallic nitride mixture; (b) heating the mixture to a temperature of 1100 C to 1550 C for a period of at least twenty minutes; (c) cooling the mixture; and (d) separating the enlarged boron nitride particles from the mixture. The separation is preferably carried out by dissolving the by-products in water. The particle size of the product is normally larger than 100 Á. The process may be carried out at high pressures, e.g. 40 kilobars.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US39463573A | 1973-09-06 | 1973-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1481026A true GB1481026A (en) | 1977-07-27 |
Family
ID=23559782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33346/74A Expired GB1481026A (en) | 1973-09-06 | 1974-07-29 | Production of large boron nitride particles |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS558925B2 (en) |
| AT (1) | AT362746B (en) |
| BE (1) | BE818939A (en) |
| CA (1) | CA1040385A (en) |
| CH (1) | CH605404A5 (en) |
| DE (1) | DE2441298C3 (en) |
| FR (1) | FR2243151B1 (en) |
| GB (1) | GB1481026A (en) |
| IE (1) | IE39637B1 (en) |
| IT (1) | IT1020281B (en) |
| NO (1) | NO137588C (en) |
| SE (1) | SE394415B (en) |
| ZA (1) | ZA744736B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58133156U (en) * | 1982-03-03 | 1983-09-08 | コニカ株式会社 | developing device |
| FR2796657B1 (en) * | 1999-07-20 | 2001-10-26 | Thomson Csf | PROCESS FOR THE SYNTHESIS OF SOLID MONOCRYSTALLINE MATERIALS IN NITRIDES OF ELEMENTS OF COLUMN III OF THE TABLE OF THE PERIODIC CLASSIFICATION |
-
1974
- 1974-07-22 CA CA205,299A patent/CA1040385A/en not_active Expired
- 1974-07-23 IE IE1563/74A patent/IE39637B1/en unknown
- 1974-07-24 ZA ZA00744736A patent/ZA744736B/en unknown
- 1974-07-29 GB GB33346/74A patent/GB1481026A/en not_active Expired
- 1974-08-16 BE BE147688A patent/BE818939A/en not_active IP Right Cessation
- 1974-08-29 DE DE2441298A patent/DE2441298C3/en not_active Expired
- 1974-08-29 IT IT26719/74A patent/IT1020281B/en active
- 1974-09-03 FR FR7429930A patent/FR2243151B1/fr not_active Expired
- 1974-09-03 AT AT0710174A patent/AT362746B/en not_active IP Right Cessation
- 1974-09-04 CH CH1199174A patent/CH605404A5/xx not_active IP Right Cessation
- 1974-09-05 SE SE7302002A patent/SE394415B/en unknown
- 1974-09-05 NO NO743192A patent/NO137588C/en unknown
- 1974-09-05 JP JP10144874A patent/JPS558925B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ZA744736B (en) | 1975-11-26 |
| SE394415B (en) | 1977-06-27 |
| NO743192L (en) | 1975-04-01 |
| IE39637L (en) | 1975-03-06 |
| FR2243151A1 (en) | 1975-04-04 |
| JPS5076000A (en) | 1975-06-21 |
| SE7411253L (en) | 1975-03-07 |
| BE818939A (en) | 1974-12-16 |
| IE39637B1 (en) | 1978-11-22 |
| CH605404A5 (en) | 1978-09-29 |
| AU7158474A (en) | 1976-01-29 |
| NO137588C (en) | 1978-03-21 |
| FR2243151B1 (en) | 1978-07-13 |
| NO137588B (en) | 1977-12-12 |
| DE2441298B2 (en) | 1981-03-12 |
| DE2441298A1 (en) | 1975-03-13 |
| DE2441298C3 (en) | 1982-01-28 |
| IT1020281B (en) | 1977-12-20 |
| JPS558925B2 (en) | 1980-03-06 |
| CA1040385A (en) | 1978-10-17 |
| ATA710174A (en) | 1980-11-15 |
| AT362746B (en) | 1981-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 429A | Application made for amendment of specification (sect. 29/1949) | ||
| 429H | Application (made) for amendment of specification now open to opposition (sect. 29/1949) | ||
| 429D | Case decided by the comptroller ** specification amended (sect. 29/1949) | ||
| SP | Amendment (slips) printed | ||
| PCNP | Patent ceased through non-payment of renewal fee |