GB1357099A - Method of manufacturing silicon nitride products - Google Patents
Method of manufacturing silicon nitride productsInfo
- Publication number
- GB1357099A GB1357099A GB5456970A GB5456970A GB1357099A GB 1357099 A GB1357099 A GB 1357099A GB 5456970 A GB5456970 A GB 5456970A GB 5456970 A GB5456970 A GB 5456970A GB 1357099 A GB1357099 A GB 1357099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silicon nitride
- preform
- product
- density
- mixture
- 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
- C04B35/593—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 pressure sintering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/284—Selection of ceramic materials
Abstract
1357099 Shaped silicon nitride JOSEPH LUCAS (INDUSTRIES) Ltd 4 Nov 1971 [17 Nov 1970 30 Dec 1970] 54569/70 and 61747/70 Heading C7D A shaped silicon nitride product is produced by:- (a) forming a mixture of silicon nitride in powder form with a fluxing agent and a temporary binder (b) forming from this mixture a preform of substantially uniform density less than the density of the required product, wherein the dimensions of the preform in the direction of subsequent hot pressing to the dimensions of the final product in the same direction are in the ratio of the preform density to the required density (c) heating the preform to remove the temporary binder (d) hot pressing the preform in a die carrying punches which together define the shape of the required product so as to form a silicon nitride product of the required shape, dimensions and density. The fluxing agent may be MgO or Mn 3 O 4 and the binder may be methyl cellulose, cellulose nitrate, polyvinyl isobutyl ether or an acrylic polymer. Alumino-silicate fibres or carbon fibres coated first with silicon carbide and then with silicon nitride may be incorporated into the mixture formed in (a) to produce a reinforced silicon nitride product. The preform may be made by extruding the mixture of silicon nitride, temporary binder and fluxing agent into a die cavity.
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5456970A GB1357099A (en) | 1970-11-17 | 1970-11-17 | Method of manufacturing silicon nitride products |
CA12713125-170A CA957487A (en) | 1970-11-17 | 1971-11-08 | Method of manufacturing silicon nitride products |
AU35546/71A AU458218B2 (en) | 1970-11-17 | 1971-11-10 | A METHOD OF MANUFACTURING SILICON nitride products |
DE19712156592 DE2156592C3 (en) | 1970-11-17 | 1971-11-15 | Process for the manufacture of products from silicon nitride by hot pressing |
FR7141019A FR2131262A5 (en) | 1970-11-17 | 1971-11-16 | |
IT5411471A IT944954B (en) | 1970-11-17 | 1971-11-16 | METHOD OF MANUFACTURING SILICON NITRIDE PRODUCTS AND PRODUCTS SO OBTAINED |
DK560971A DK134596B (en) | 1970-11-17 | 1971-11-16 | Process for producing a silicon nitride product. |
BE775331A BE775331A (en) | 1970-11-17 | 1971-11-16 | MANUFACTURING PROCESS OF NITRIDE PRODUCTS |
AT994471A AT319131B (en) | 1970-11-17 | 1971-11-17 | Process for making a silicon nitride product |
NL7115869A NL7115869A (en) | 1970-11-17 | 1971-11-17 | |
CH1669871A CH541524A (en) | 1970-11-17 | 1971-11-17 | Process for producing a silicon nitride shaped body, and shaped body obtained by the process |
US05/667,582 US4126653A (en) | 1970-11-17 | 1976-03-17 | Method of manufacturing silicon nitride products |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5456970A GB1357099A (en) | 1970-11-17 | 1970-11-17 | Method of manufacturing silicon nitride products |
GB6174870 | 1970-12-30 | ||
GB6174770 | 1970-12-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1357099A true GB1357099A (en) | 1974-06-19 |
Family
ID=27260362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5456970A Expired GB1357099A (en) | 1970-11-17 | 1970-11-17 | Method of manufacturing silicon nitride products |
Country Status (11)
Country | Link |
---|---|
AT (1) | AT319131B (en) |
AU (1) | AU458218B2 (en) |
BE (1) | BE775331A (en) |
CA (1) | CA957487A (en) |
CH (1) | CH541524A (en) |
DE (1) | DE2156592C3 (en) |
DK (1) | DK134596B (en) |
FR (1) | FR2131262A5 (en) |
GB (1) | GB1357099A (en) |
IT (1) | IT944954B (en) |
NL (1) | NL7115869A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2812019C2 (en) * | 1978-03-18 | 1982-06-03 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Device for producing a preform from silicon nitride |
JPS59224306A (en) * | 1983-05-13 | 1984-12-17 | 日本碍子株式会社 | Manufacture of ceramic part |
DE3741689A1 (en) * | 1987-12-09 | 1989-06-29 | Rolf Engel | METHOD FOR PRODUCING MOLDED PARTS |
DE4238878C2 (en) * | 1991-11-21 | 1997-05-07 | Abb Patent Gmbh | Process for producing a hollow ceramic article in the form of a rotating body |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2386604A (en) * | 1943-10-30 | 1945-10-09 | American Electro Metal Corp | Method of molding under pressure metallic powders |
US2778064A (en) * | 1951-10-20 | 1957-01-22 | Thompson Prod Inc | Coining method and apparatus |
GB970639A (en) * | 1960-03-24 | 1964-09-23 | Plessey Co Ltd | Method of producing high density silicon nitride |
GB951681A (en) * | 1961-08-11 | 1964-03-11 | Ti Group Services Ltd | Manufacture of silicon nitride articles |
FR1411642A (en) * | 1964-10-16 | 1965-09-17 | Atomic Energy Authority Uk | Process for manufacturing an extrusion mixture of a powdered ceramic material |
-
1970
- 1970-11-17 GB GB5456970A patent/GB1357099A/en not_active Expired
-
1971
- 1971-11-08 CA CA12713125-170A patent/CA957487A/en not_active Expired
- 1971-11-10 AU AU35546/71A patent/AU458218B2/en not_active Expired
- 1971-11-15 DE DE19712156592 patent/DE2156592C3/en not_active Expired
- 1971-11-16 FR FR7141019A patent/FR2131262A5/fr not_active Expired
- 1971-11-16 IT IT5411471A patent/IT944954B/en active
- 1971-11-16 DK DK560971A patent/DK134596B/en unknown
- 1971-11-16 BE BE775331A patent/BE775331A/en unknown
- 1971-11-17 CH CH1669871A patent/CH541524A/en not_active IP Right Cessation
- 1971-11-17 AT AT994471A patent/AT319131B/en not_active IP Right Cessation
- 1971-11-17 NL NL7115869A patent/NL7115869A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CA957487A (en) | 1974-11-12 |
DE2156592B2 (en) | 1978-08-10 |
CH541524A (en) | 1973-09-15 |
AT319131B (en) | 1974-12-10 |
DK134596C (en) | 1977-05-16 |
DK134596B (en) | 1976-12-06 |
AU3554671A (en) | 1973-05-17 |
DE2156592C3 (en) | 1979-04-05 |
IT944954B (en) | 1973-04-20 |
FR2131262A5 (en) | 1972-11-10 |
NL7115869A (en) | 1972-05-19 |
AU458218B2 (en) | 1975-02-20 |
BE775331A (en) | 1972-03-16 |
DE2156592A1 (en) | 1972-05-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |