GB1525610A - Silicon nitride - Google Patents
Silicon nitrideInfo
- Publication number
- GB1525610A GB1525610A GB5321775A GB5321775A GB1525610A GB 1525610 A GB1525610 A GB 1525610A GB 5321775 A GB5321775 A GB 5321775A GB 5321775 A GB5321775 A GB 5321775A GB 1525610 A GB1525610 A GB 1525610A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- silicon nitride
- compound
- iron oxide
- solution
- 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
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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B35/591—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 obtained by reaction sintering
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Catalysts (AREA)
Abstract
1525610 Silicon nitride DEFENCE SECRETARY OF STATE FOR 30 Dec 1976 [30 Dec 1975] 53217/75 Heading C1A Reaction-bonded silicon nitride material is subjected to impregnation to introduce iron oxide therein. Suitably, the material is exposed to an iron-containing compound to deposit the compound in the silicon nitride material, followed by heating to decompose the deposited compound and form the iron oxide. Alternatively exposure to the iron-containing compound may be carried out at a sufficiently elevated temperature to ensure deposition of iron in the reaction-bonded silicon nitride in the form of iron oxide. Impregnation may be effected by placing the silicon nitride in a solution of the compound, suitably a solution of an iron salt in its own water of crystallization, or by vacuum impregnation using a solution of an ironcontaining compound. Colloidal iron compounds e.g. colloidal hydrated or hydroxylated oxides, organic compounds of iron, e.g. the acetate, oxalate or oleate, may be used, readily decomposable oxygen-containing iron salts being preferred, especially ferric nitrate hexahydrate or nonahydrate. The treated silicon nitride may be dried at about 150‹ C and the iron oxide formed by heating to 850‹ C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5321775A GB1525610A (en) | 1976-12-30 | 1976-12-30 | Silicon nitride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5321775A GB1525610A (en) | 1976-12-30 | 1976-12-30 | Silicon nitride |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1525610A true GB1525610A (en) | 1978-09-20 |
Family
ID=10467024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5321775A Expired GB1525610A (en) | 1976-12-30 | 1976-12-30 | Silicon nitride |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1525610A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5643842A (en) * | 1992-10-14 | 1997-07-01 | Isuzu Ceramics Research Institute Co., Ltd. | Low-friction ceramics |
-
1976
- 1976-12-30 GB GB5321775A patent/GB1525610A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5643842A (en) * | 1992-10-14 | 1997-07-01 | Isuzu Ceramics Research Institute Co., Ltd. | Low-friction ceramics |
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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 |