GB1303925A - - Google Patents
Info
- Publication number
- GB1303925A GB1303925A GB3645871A GB3645871A GB1303925A GB 1303925 A GB1303925 A GB 1303925A GB 3645871 A GB3645871 A GB 3645871A GB 3645871 A GB3645871 A GB 3645871A GB 1303925 A GB1303925 A GB 1303925A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sintering
- compact
- aug
- powder
- 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.)
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
1303925 Sintered boron nitride LONZA Ltd 3 Aug 1971 [13 Aug 1970] 36458/71 Heading C7D Sintered BN is made by cold compacting a BN powder and sintering the compact in a N 2 atmosphere above atmospheric pressure e.g. 5-100 atmospheres. The powder may be compacted isostatically or between punches and the sintering may be at 1300-2500‹C. for 5-120 mins. The compact expands in sintering and has a lower density than the green compact e.g. 1À63 g/cc. against 1À9 g/cc.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1216570 | 1970-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1303925A true GB1303925A (en) | 1973-01-24 |
Family
ID=4380489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3645871A Expired GB1303925A (en) | 1970-08-13 | 1971-08-03 |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT305131B (en) |
BE (1) | BE771333A (en) |
DE (1) | DE2140762A1 (en) |
FR (1) | FR2104188A5 (en) |
GB (1) | GB1303925A (en) |
NL (1) | NL7111049A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0022177A1 (en) * | 1979-06-11 | 1981-01-14 | General Electric Company | Process and apparatus for making cubic boron nitride from powdered hexagonal boron nitride |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2634478B1 (en) * | 1988-07-25 | 1992-08-28 | Financ Cetal Sarl | PROCESS FOR THE MANUFACTURE OF A BORON NITRIDE INSULATING BAR, MAINLY USED IN PROTECTED HEATING ELEMENTS, AND THE BAR THUS OBTAINED |
CH677923A5 (en) * | 1989-04-28 | 1991-07-15 | Htm Ag |
-
1971
- 1971-08-03 GB GB3645871A patent/GB1303925A/en not_active Expired
- 1971-08-09 AT AT692771A patent/AT305131B/en not_active IP Right Cessation
- 1971-08-10 FR FR7129244A patent/FR2104188A5/fr not_active Expired
- 1971-08-11 NL NL7111049A patent/NL7111049A/xx unknown
- 1971-08-13 DE DE19712140762 patent/DE2140762A1/en active Pending
- 1971-08-13 BE BE771333A patent/BE771333A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0022177A1 (en) * | 1979-06-11 | 1981-01-14 | General Electric Company | Process and apparatus for making cubic boron nitride from powdered hexagonal boron nitride |
US4289503A (en) | 1979-06-11 | 1981-09-15 | General Electric Company | Polycrystalline cubic boron nitride abrasive and process for preparing same in the absence of catalyst |
Also Published As
Publication number | Publication date |
---|---|
AT305131B (en) | 1973-02-12 |
NL7111049A (en) | 1972-02-15 |
DE2140762A1 (en) | 1972-02-17 |
FR2104188A5 (en) | 1972-04-14 |
BE771333A (en) | 1972-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |