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The bonding between the glass or ceramics and the glass solder can be either covalent, or, more often, van der Waals. [12] The seal can be leak-tight; glass soldering is frequently used in vacuum technology. Glass solders can be also used as sealants; a vitreous enamel coating on iron lowered its permeability to hydrogen 10 times. [13]
Uranium glass used as lead-in seals in a vacuum capacitor. Glass-to-metal seals are a type of mechanical seal which joins glass and metal surfaces. They are very important elements in the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass-encapsulated semiconductor diodes, reed switches, glass windows in metal cases, and metal or ceramic packages of ...
When the brazing temperature is suitably high, brazing and heat treatment can be done in a single operation simultaneously. Eutectic alloys melt at single temperature, without mushy region. Eutectic alloys have superior spreading; non-eutectics in the mushy region have high viscosity and at the same time attack the base metal, with ...
Attachments can be made vertically, horizontally or even overhead. If preferred, threaded pins with nuts can be attached or cable bonded directly onto the pipe by means of a special cable lug which can be crimped on site or supplied complete as a unique integrally crimped attachment. The pin brazing unit contains all the equipment and tools ...
High-temperature. Brazing temperature 1400 °C. Can be used for brazing molybdenum. 91.5: 8.5: Ti 70 V 30 [5] – High-temperature. Brazing temperature 1650 °C. Can be used for brazing molybdenum. 70: V 30: V 65 Nb 35 [5] – High-temperature. Brazing temperature 1870 °C. Can be used for brazing molybdenum. V 65 Nb 35: Nb 97.8 B 2.2 [5 ...
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