GB976468A - - Google Patents
Info
- Publication number
- GB976468A GB976468A GB3648260A GB3648260A GB976468A GB 976468 A GB976468 A GB 976468A GB 3648260 A GB3648260 A GB 3648260A GB 3648260 A GB3648260 A GB 3648260A GB 976468 A GB976468 A GB 976468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sic
- alloy
- volume
- impregnating
- elements
- 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
- 229910045601 alloy Inorganic materials 0.000 abstract 12
- 239000000956 alloy Substances 0.000 abstract 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 229910052782 aluminium Inorganic materials 0.000 abstract 4
- 229910052790 beryllium Inorganic materials 0.000 abstract 4
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 abstract 4
- 229910052799 carbon Inorganic materials 0.000 abstract 4
- 229910052735 hafnium Inorganic materials 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 4
- 238000005470 impregnation Methods 0.000 abstract 4
- 229910052749 magnesium Inorganic materials 0.000 abstract 4
- 229910021344 molybdenum silicide Inorganic materials 0.000 abstract 4
- 239000011148 porous material Substances 0.000 abstract 4
- 229910052719 titanium Inorganic materials 0.000 abstract 4
- 229910052726 zirconium Inorganic materials 0.000 abstract 4
- 229910000951 Aluminide Inorganic materials 0.000 abstract 2
- 229910052684 Cerium Inorganic materials 0.000 abstract 2
- 229910000676 Si alloy Inorganic materials 0.000 abstract 2
- 229910052776 Thorium Inorganic materials 0.000 abstract 2
- 229910003481 amorphous carbon Inorganic materials 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 2
- 238000010000 carbonizing Methods 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 229910002804 graphite Inorganic materials 0.000 abstract 2
- 239000010439 graphite Substances 0.000 abstract 2
- 238000011065 in-situ storage Methods 0.000 abstract 2
- 230000008595 infiltration Effects 0.000 abstract 2
- 238000001764 infiltration Methods 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 229910052748 manganese Inorganic materials 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 229910003465 moissanite Inorganic materials 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 229910052758 niobium Inorganic materials 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 238000002360 preparation method Methods 0.000 abstract 2
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 2
- 150000002910 rare earth metals Chemical class 0.000 abstract 2
- 229910052710 silicon Inorganic materials 0.000 abstract 2
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 229910052715 tantalum Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 229910052721 tungsten Inorganic materials 0.000 abstract 2
- 229910052720 vanadium Inorganic materials 0.000 abstract 2
- 229910052727 yttrium Inorganic materials 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 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
- 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
- C04B35/56—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 carbides or oxycarbides
- C04B35/565—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 carbides or oxycarbides based on silicon carbide
- C04B35/573—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 carbides or oxycarbides based on silicon carbide obtained by reaction sintering or recrystallisation
-
- 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
- C04B41/5053—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 non-oxide ceramics
- C04B41/5062—Borides, Nitrides or Silicides
- C04B41/5071—Silicides
-
- 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
- C04B41/87—Ceramics
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/148—Silicon, e.g. silicon carbide, magnesium silicide, heating transistors or diodes
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)
- Ceramic Products (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
A dense oxidation proof heat-resistant body is formed by impregnating a preliminary porous body consisting of 30-90% by volume of SiC with 10-70% by volume of an alloy principally comprising molybdenum silicide. The impregnating alloy may also contain 1-15% silicon alloys of members of the groups W, Cr, Ta, Nb, V, Hf, Zr or Ti together with up to 30% by weight of one or more of the elements Al, Be, Ca, Ce, Co, Cu, Mg, Fe, Mn, Ni, C and B. Minor amounts of borides, aluminides, and titanides of certain highmelting metals may be included in the impregnating alloy. The preliminary porous body is shaped from one or more of the following, hexagonal SiC, cubic SiC, graphite, amorphous carbon, and carbon containing carbonizable material, in the case of the three latter substances the SiC is formed in situ during the impregnation process. The final body may have an optional oxide component comprising up to 20% volume of mixed oxides selected from the elements Al, Be, Ce, Cr, Hf, Mg, Ti, Si, Zr, Th, Y and other rare earth metals. In an example, the SiC body impregnated with the molybdenum silicide alloy is heated in air to form a film of SiO2 on the surface and so seal the pores. Generally, the bodies are prepared by coating the porous SiC body with the required amount of alloy powder held in position by a paper binder and heating in a carbonizing atmosphere to effect infiltration of the alloy into the pore space, the residual porous cake loosely adhering to the surface after impregnation being subsequently removed. Examples are given of the preparation of hollow and solid electrical resistance heating elements. Reference has been directed by the Comptroller to Specification 936,118.ALSO:A dense oxidation-proof heat-resistant body is formed by impregnating a preliminary porous body consisting of 30-90% by volume of SiC with 10-70% by volume of an alloy principally comprising molybdenum silicide. The impregnating alloy may also contain 1-15% silicon alloys of members of the group W, Cr, Ta, Nb, V, Hf, Zr or Ti together with up to 30% by weight of one or more of the elements Al, Be, Ca, Ce, Co, Cu, Mg, Fe, Mn, Ni, C and B. Minor amounts of borides, aluminides, and titanides of certain high melting metals may be included in the impregnating alloy. The preliminary porous body is shaped from one or more of the following, hexagonal SiC, cubic SiC, graphite, amorphous carbon, and carbon containing carbonizable material, in the case of the three latter substances the SiC is formed in situ during the impregnation process. The final body may have an optional oxide component comprising up to 20% volume of mixed oxides selected from the elements Al, Be, Ce, Cr. Hf, Mg, Ti, Si, Zr, Th, Y and other rare earth metals. In an example, the SiC body impregnated with the molybdenum silicide alloy is heated in air to form a film of SiO2 on the surface and so seal the pores. Generally the bodies are prepared by coating the porous SiC body with the required amount of alloy powder held in position by a paper binder and heating in a carbonizing atmosphere to effect infiltration of the alloy into the pore space, the residual porous cake loosely adhering to the surface after impregnation being subsequently removed. Examples are given of the preparation of hollow and solid electrical resistance heating elements. Reference has been directed by the Comptroller to Specification 936,118.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1007960 | 1960-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB976468A true GB976468A (en) | 1964-11-25 |
Family
ID=31185896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3648260A Expired GB976468A (en) | 1960-03-02 | 1960-10-24 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB976468A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2125066A (en) * | 1982-07-29 | 1984-02-29 | Mamoru Omori | Sintered silicon carbide molding and process for production thereof |
| GB2142343A (en) * | 1983-06-30 | 1985-01-16 | Japan Metals & Chem Co Ltd | Composite silicon carbide sintered shapes and their manufacture |
| GB2163364A (en) * | 1984-08-22 | 1986-02-26 | Hutschenreuther | Exhaust gas catalysts and processes for the production thereof |
| CN108934087A (en) * | 2017-05-26 | 2018-12-04 | Lg电子株式会社 | Carbon heating body |
| CN108966379A (en) * | 2017-05-26 | 2018-12-07 | Lg电子株式会社 | The manufacturing method of carbon heater |
| US11097985B2 (en) | 2017-05-10 | 2021-08-24 | Lg Electronics Inc. | Carbon composite composition and carbon heater manufactured using the same |
-
1960
- 1960-10-24 GB GB3648260A patent/GB976468A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2125066A (en) * | 1982-07-29 | 1984-02-29 | Mamoru Omori | Sintered silicon carbide molding and process for production thereof |
| GB2142343A (en) * | 1983-06-30 | 1985-01-16 | Japan Metals & Chem Co Ltd | Composite silicon carbide sintered shapes and their manufacture |
| GB2163364A (en) * | 1984-08-22 | 1986-02-26 | Hutschenreuther | Exhaust gas catalysts and processes for the production thereof |
| FR2569355A1 (en) * | 1984-08-22 | 1986-02-28 | Hutschenreuther | EXHAUST GAS CATALYST AND METHOD FOR MANUFACTURING THE SAME |
| US11097985B2 (en) | 2017-05-10 | 2021-08-24 | Lg Electronics Inc. | Carbon composite composition and carbon heater manufactured using the same |
| CN108934087A (en) * | 2017-05-26 | 2018-12-04 | Lg电子株式会社 | Carbon heating body |
| CN108966379A (en) * | 2017-05-26 | 2018-12-07 | Lg电子株式会社 | The manufacturing method of carbon heater |
| US11096249B2 (en) | 2017-05-26 | 2021-08-17 | Lg Electronics Inc. | Carbon heating element and method for manufacturing a carbon heating element |
| CN108966379B (en) * | 2017-05-26 | 2021-12-24 | Lg电子株式会社 | Method for manufacturing carbon heater |
| CN108934087B (en) * | 2017-05-26 | 2022-06-14 | Lg电子株式会社 | Carbon heating element |
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