GB760265A - Improvements relating to the joining of refractory metals - Google Patents
Improvements relating to the joining of refractory metalsInfo
- Publication number
- GB760265A GB760265A GB980254A GB980254A GB760265A GB 760265 A GB760265 A GB 760265A GB 980254 A GB980254 A GB 980254A GB 980254 A GB980254 A GB 980254A GB 760265 A GB760265 A GB 760265A
- Authority
- GB
- United Kingdom
- Prior art keywords
- molybdenum
- heated
- mass
- joint
- paste
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
760,265. Jointing. BRITISH THOMSONHOUSTON CO., Ltd. April Z, 1955 [April 2, 1954], No. 9802/54. Class 83 (4). A method of joining together the refractory metals, molybdenum, molybdenum tungsten alloys, tungsten and tantalum consists in causing the surfaces to be joined to contact directly at a multiplicity of small areas by a labyrinthine mass through which a reducing gas is passed while the contacting parts are heated in order to cause intergrowth at the contacting surfaces with, and of, the mass, whereby to form electrical contact and mechanical connections between the surfaces and simultaneously and/or subsequently siliciding the joint to protect it from oxidation. The labyrinthine mass may be formed of powdered metal and/or metal oxide the powder being mixed with a liquid containing a binder, e.g. a solution of high viscosity nitrocellulose in amylacetate, to form a paste. The pasted joint is heated to approximately 900‹ C. in a reducing atmosphere containing hydrogen. In an embodiment the ends of the molybdenum wires of an electrical heating element for igniting highly oxidizing fuel are crinkled, pasted with oxidized powdered molybdenum and then forced into a recess in a molybdenum terminal block said recess being preferably filled with the paste. The assembly is then heated as hitherto to reduce the oxide and cause the intergrowth between the particles and the surfaces of the wires and the block. The reduction may be effected simultaneously with the siliciding process by heating the joint with the attached paste in hydrogen mixed with silicon tetrachloride. Specification 730,855, [Group II], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB980254A GB760265A (en) | 1954-04-02 | 1954-04-02 | Improvements relating to the joining of refractory metals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB980254A GB760265A (en) | 1954-04-02 | 1954-04-02 | Improvements relating to the joining of refractory metals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB760265A true GB760265A (en) | 1956-10-31 |
Family
ID=9879060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB980254A Expired GB760265A (en) | 1954-04-02 | 1954-04-02 | Improvements relating to the joining of refractory metals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB760265A (en) |
-
1954
- 1954-04-02 GB GB980254A patent/GB760265A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB939871A (en) | Method of bonding aluminum members | |
GB1283848A (en) | Process for soldering difficultly solderable metals | |
US2163410A (en) | Ceramic-to-metal seal | |
GB1132347A (en) | Strap frame electrodes | |
JPS5720656A (en) | Detector for concentration of oxygen | |
GB760265A (en) | Improvements relating to the joining of refractory metals | |
GB967387A (en) | Method of sealing metallic elements between members,one of which is made of glass or ceramic material and the other of which is made of glass or ceramic material or of metal | |
GB873558A (en) | Improvements in or relating to electrical connectors | |
GB1262420A (en) | Improvements in or relating to voltage overload protectors | |
GB1451976A (en) | Soldered joint | |
GB1030703A (en) | Method of sealing the envelope of an electron discharge device and electron discharge devices formed by said method | |
GB390011A (en) | Improvements in the manufacture of seals or connectors for vitreous to metal joints | |
GB1484641A (en) | Method of bonding sintered iron containing articles | |
US2623975A (en) | Method of welding molybdenum | |
GB1510468A (en) | Igniters | |
US3980504A (en) | Thermocouple structure | |
GB775969A (en) | Thermoelectric generator | |
US1434538A (en) | Welding tablet or capsule | |
GB1397319A (en) | Electrically conductive materials | |
GB504078A (en) | Improvements in and relating to methods of cementing carbon bodies | |
US2658013A (en) | Flux for hard soldering of tungsten | |
GB925509A (en) | Ceramic to metal bond | |
US2985744A (en) | Stud welding | |
GB727460A (en) | A method of making electrical and/or mechanical connections | |
GB598653A (en) | Improvements in or relating to the coating of metals with metals and alloys |