GB1377170A - Fabrication of permable sintered artefacts which are electrically conductive - Google Patents
Fabrication of permable sintered artefacts which are electrically conductiveInfo
- Publication number
- GB1377170A GB1377170A GB5514670A GB5514670A GB1377170A GB 1377170 A GB1377170 A GB 1377170A GB 5514670 A GB5514670 A GB 5514670A GB 5514670 A GB5514670 A GB 5514670A GB 1377170 A GB1377170 A GB 1377170A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silicon
- electrically conductive
- firing
- sintered
- setting
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 229910052710 silicon Inorganic materials 0.000 abstract 5
- 239000010703 silicon Substances 0.000 abstract 5
- 238000010304 firing Methods 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 229910052581 Si3N4 Inorganic materials 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 2
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000006018 Li-aluminosilicate Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000011195 cermet Substances 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000002241 glass-ceramic Substances 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920001169 thermoplastic Polymers 0.000 abstract 1
- 239000004416 thermosoftening plastic Substances 0.000 abstract 1
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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/6342—Polyvinylacetals, e.g. polyvinylbutyral [PVB]
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
- Resistance Heating (AREA)
Abstract
1377170 Sintered refractory article UNITED KINGDOM ATOMIC ENERGY AUTHORITY 19 Nov 1971 [19 Nov 1970] 55146/70 Addition to 1274211 Heading B5A [Also in Division C1] Permeable sintered articles, e.g. electrical resistor heater elements are formed by mixing powdered refractory material and one or more binders providing thermoplastic and setting properties, forming green sheets therefrom and deforming at least some thereof to form grooves or channels therein, bonding the sheets together so that the grooves, etc. form passageways through the body formed, and firing the body after setting, at least part of the material being inherently electrically conductive, or, alternatively, the material comprising constituents which react during firing to form an electrically conductive phase. The refractory may be a ceramic, e.g. alumina or silicon, a glass, e.g. lithium aluminosilicate glass, a glass ceramic or a cermet or mixtures of these. The silicon may be converted to silicon nitride by firing in a nitrogen atmosphere. A single resin, e.g. polyvinyl butyral may provide both plastic and setting binder properties. The material may comprise graphite and silicon and firing is effected, initially at a first temperature at which some silicon carbide is formed and for a time sufficient to convert the bulk of the silicon to silicon nitride and finally at a higher temperature to complete the reaction between the silicon and nitrogen, the silicon carbide formed providing the electrically conductive phase in the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5514670A GB1377170A (en) | 1971-11-19 | 1971-11-19 | Fabrication of permable sintered artefacts which are electrically conductive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5514670A GB1377170A (en) | 1971-11-19 | 1971-11-19 | Fabrication of permable sintered artefacts which are electrically conductive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1377170A true GB1377170A (en) | 1974-12-11 |
Family
ID=10473095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5514670A Expired GB1377170A (en) | 1971-11-19 | 1971-11-19 | Fabrication of permable sintered artefacts which are electrically conductive |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1377170A (en) |
-
1971
- 1971-11-19 GB GB5514670A patent/GB1377170A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |