GB1469768A - Ceramic materials - Google Patents
Ceramic materialsInfo
- Publication number
- GB1469768A GB1469768A GB4140673A GB4140673A GB1469768A GB 1469768 A GB1469768 A GB 1469768A GB 4140673 A GB4140673 A GB 4140673A GB 4140673 A GB4140673 A GB 4140673A GB 1469768 A GB1469768 A GB 1469768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- alumina
- silicon nitride
- carbon
- further particulate
- 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
- C04B35/584—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 silicon nitride
-
- 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
- C04B35/597—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 silicon oxynitride, e.g. SIALONS
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)
Abstract
1469768 Ceramic materials LUCAS INDUSTRIES Ltd 25 July 1974 [4 Sept 1973] 41406/73 Headings CIJ and C1A [Also in Division C7] A ceramic material is produced by sintering, at an elevated temperature and in a protective environment, a mixture containing particulate silicon nitride, and a further particulate refractory material, the further particulate material chemically combining with the silicon nitride to produce the required ceramic material, wherein the mixture also contains carbon at the elevated temperature. The carbon may be introduced into the mixture as a carbon compound decomposable on heating, e.g. carbohydrate or organic binding agent. The further particulate material may be alumina, which may be introduced into the mixture as a compound decomposable to alumina on heating, e.g. aluminium hydroxide. In an example, a mixture of silicon nitride and alumina in the molar ratio of 1 : <SP>4</SP>/ 3 containing 2 wt. per cent graphite was heated in N 2 to give a product containing about 10% free Al 2 O 3 with a trace of α-phase Si 3 N 4 , the balance being silicon aluminium oxynitride.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4140673A GB1469768A (en) | 1973-09-04 | 1973-09-04 | Ceramic materials |
| CA208,484A CA1047745A (en) | 1973-09-04 | 1974-09-04 | Ceramic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4140673A GB1469768A (en) | 1973-09-04 | 1973-09-04 | Ceramic materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1469768A true GB1469768A (en) | 1977-04-06 |
Family
ID=10419552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4140673A Expired GB1469768A (en) | 1973-09-04 | 1973-09-04 | Ceramic materials |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1047745A (en) |
| GB (1) | GB1469768A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5969476A (en) * | 1982-10-08 | 1984-04-19 | 三菱マテリアル株式会社 | Manufacture of sialon base ceramic sintering material |
| US4608353A (en) * | 1984-04-25 | 1986-08-26 | Hitachi, Ltd. | High-alumina refractory for use in non-ferrous metal melting furnace |
-
1973
- 1973-09-04 GB GB4140673A patent/GB1469768A/en not_active Expired
-
1974
- 1974-09-04 CA CA208,484A patent/CA1047745A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5969476A (en) * | 1982-10-08 | 1984-04-19 | 三菱マテリアル株式会社 | Manufacture of sialon base ceramic sintering material |
| JPS6218514B2 (en) * | 1982-10-08 | 1987-04-23 | Mitsubishi Metal Corp | |
| US4608353A (en) * | 1984-04-25 | 1986-08-26 | Hitachi, Ltd. | High-alumina refractory for use in non-ferrous metal melting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CA1047745A (en) | 1979-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |