GB709806A - Improvements in or relating to electrical resistance heating elements - Google Patents
Improvements in or relating to electrical resistance heating elementsInfo
- Publication number
- GB709806A GB709806A GB3012250A GB3012250A GB709806A GB 709806 A GB709806 A GB 709806A GB 3012250 A GB3012250 A GB 3012250A GB 3012250 A GB3012250 A GB 3012250A GB 709806 A GB709806 A GB 709806A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistor
- silicon
- metal
- alloy
- hydrogen
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- 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
Landscapes
- Resistance Heating (AREA)
Abstract
709,806. Electric resistance heaters. GENERAL ELECTRIC CO., Ltd., DAVEY, D. and RANDLE, K. C. Dec. 10, 1951 [Dec. 8, 1950], No. 30122/50. Class 39 (3) An electric furnace heating element is formed of tungsten, molybdenum or a molybdenum-tungsten alloy, with a protective surface composed of an alloy of silicon and the metal or alloy in order to resist oxidation at 1500‹C. The layer of silicon alloy is preferably integral with the metal of the resistor, which may comprise a rod or a preferably helical wire, machined to the required dimensions. The metal is siliconized by exposing it to a non-oxidizing atmosphere containing hydrogen and the vapour of silicon halide, preferably silicon tetrachloride at 1100-1300‹C. This atmosphere is generated by passing a mixture of hydrogen and hydrogen chloride vapour over a silcon containing powder, e.g. ferro-silicon packed around the resistor metal, or by bubbling hydrogen, e.g. mixed with a non-oxidizing gas through liquid silicon tetrachloride, and passing the gas over the bar supported in a graphite vessel. A layer of molybdenum silicide 0.06 mm. thick may be formed after 3 hours. An element 50 cms. long preferably with thickened ends may be mounted between water-cooled terminals. Any cracks formed in the resistor while it is heated up are self-sealing at operative temperature, which may be due to the formation of a film of silica on the resistor. Specification 309,393, [Class 72], is referred to. According to the Provisional Specification, the resistor may be of other refractory metals particularly tantalum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3012250A GB709806A (en) | 1950-12-08 | 1950-12-08 | Improvements in or relating to electrical resistance heating elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3012250A GB709806A (en) | 1950-12-08 | 1950-12-08 | Improvements in or relating to electrical resistance heating elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB709806A true GB709806A (en) | 1954-06-02 |
Family
ID=10302641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3012250A Expired GB709806A (en) | 1950-12-08 | 1950-12-08 | Improvements in or relating to electrical resistance heating elements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB709806A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009060939A1 (en) | 2009-12-22 | 2011-06-30 | HTM Reetz GmbH, 12555 | Electric heating element for high temperature oven, has one-side closed ceramic tube filled with electrically isolating material that is disintegrated into inert and oxygen-binding gas components at high temperatures |
| DE202009018409U1 (en) | 2009-12-22 | 2011-11-29 | Htm Reetz Gmbh | Electric heating element for high-temperature furnaces |
| DE102016202872A1 (en) * | 2016-02-24 | 2017-08-24 | MTU Aero Engines AG | A member of a molybdenum alloy and method for forming an oxidation protective layer therefor |
| DE102018215313A1 (en) * | 2018-09-10 | 2020-03-12 | MTU Aero Engines AG | Process for producing an oxidation-resistant component made of a molybdenum-based alloy |
| DE102019218784A1 (en) * | 2019-12-03 | 2021-06-10 | MTU Aero Engines AG | PROCESS FOR MANUFACTURING AN OXIDATION-RESISTANT COMPONENT FROM AN ALLOY BASED ON A REFRACTORY METAL |
| CN118652139A (en) * | 2024-08-14 | 2024-09-17 | 湖南泽尔顿新材料有限公司 | Surface modification method of high-temperature-resistant silicon carbide rod |
-
1950
- 1950-12-08 GB GB3012250A patent/GB709806A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009060939A1 (en) | 2009-12-22 | 2011-06-30 | HTM Reetz GmbH, 12555 | Electric heating element for high temperature oven, has one-side closed ceramic tube filled with electrically isolating material that is disintegrated into inert and oxygen-binding gas components at high temperatures |
| DE202009018409U1 (en) | 2009-12-22 | 2011-11-29 | Htm Reetz Gmbh | Electric heating element for high-temperature furnaces |
| DE102016202872A1 (en) * | 2016-02-24 | 2017-08-24 | MTU Aero Engines AG | A member of a molybdenum alloy and method for forming an oxidation protective layer therefor |
| DE102018215313A1 (en) * | 2018-09-10 | 2020-03-12 | MTU Aero Engines AG | Process for producing an oxidation-resistant component made of a molybdenum-based alloy |
| DE102019218784A1 (en) * | 2019-12-03 | 2021-06-10 | MTU Aero Engines AG | PROCESS FOR MANUFACTURING AN OXIDATION-RESISTANT COMPONENT FROM AN ALLOY BASED ON A REFRACTORY METAL |
| CN118652139A (en) * | 2024-08-14 | 2024-09-17 | 湖南泽尔顿新材料有限公司 | Surface modification method of high-temperature-resistant silicon carbide rod |
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