GB887658A - Improvements relating to the preparation of hot-pressed boron nitride - Google Patents
Improvements relating to the preparation of hot-pressed boron nitrideInfo
- Publication number
- GB887658A GB887658A GB607759A GB607759A GB887658A GB 887658 A GB887658 A GB 887658A GB 607759 A GB607759 A GB 607759A GB 607759 A GB607759 A GB 607759A GB 887658 A GB887658 A GB 887658A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- mixture
- added
- hot
- boron nitride
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/583—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on boron nitride
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Products (AREA)
Abstract
Up to 5% by weight aluminium is added to boron nitride powder and the mixture is hot pressed. The aluminium may be added as aluminium powder, aluminium nitride, or as a mixture of aluminium nitride and boric oxide. The hot pressing is effected at 1750 DEG C. and 600 p.s.i. or at 1800 DEG C. and 520 p.s.i. According to the Provisional Specification the aluminium may also be added as a mixture of calcium carbonate and alumina.ALSO:Up to 5% aluminium is added to boron nitride powder and the mixture is hot pressed. The aluminium is added as aluminium powder, aluminium nitride, or as a mixture of boric oxide and aluminium nitride. Hot pressing is effected at 1750 DEG C. and 600 p.s.i. or at 1800 DEG C. and 520 p.s.i. According to the Provisional Specification the aluminium may also be added as a mixture of calcium carbonate and alumina.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB607759A GB887658A (en) | 1959-02-23 | 1959-02-23 | Improvements relating to the preparation of hot-pressed boron nitride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB607759A GB887658A (en) | 1959-02-23 | 1959-02-23 | Improvements relating to the preparation of hot-pressed boron nitride |
Publications (1)
Publication Number | Publication Date |
---|---|
GB887658A true GB887658A (en) | 1962-01-24 |
Family
ID=9807968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB607759A Expired GB887658A (en) | 1959-02-23 | 1959-02-23 | Improvements relating to the preparation of hot-pressed boron nitride |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB887658A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3353954A (en) * | 1959-06-30 | 1967-11-21 | Commw Scient Ind Res Org | Method of producing compacts by reacting particulate ingredients |
FR2193796A1 (en) * | 1972-07-25 | 1974-02-22 | Kempten Elektroschmelz Gmbh | |
FR2196301A1 (en) * | 1972-08-18 | 1974-03-15 | Kempten Elektroschmelz Gmbh | |
CH677488A5 (en) * | 1989-02-14 | 1991-05-31 | Htm Ag |
-
1959
- 1959-02-23 GB GB607759A patent/GB887658A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3353954A (en) * | 1959-06-30 | 1967-11-21 | Commw Scient Ind Res Org | Method of producing compacts by reacting particulate ingredients |
FR2193796A1 (en) * | 1972-07-25 | 1974-02-22 | Kempten Elektroschmelz Gmbh | |
FR2196301A1 (en) * | 1972-08-18 | 1974-03-15 | Kempten Elektroschmelz Gmbh | |
CH677488A5 (en) * | 1989-02-14 | 1991-05-31 | Htm Ag |
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