Molybdenum Alloys for Glass-to-Metal Seals
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- Category: Molybdenum knowledge
- Published on 10 July 2013
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The requirements for Mo-wire for hard glass sealing (matched seal) and Mo ESS-ribbon for quartz glass sealing (ductile-metal seal) will be discussed.
Comparing the effect of various oxide additions to molybdenum, a correlation between the percentage of ionic bonding character of the oxide and the recrystallization temperature of the ODS-Mo could be found.
Owing to particle refining during deformation and heat treatment.For hard glass sealing the particle multiplication factor should be as high as possible (e.g. Mo-La2O3) in order to achieve ductility after the pinch-sealing operation.
Quartz glass sealing demands an ESS-ribbon with a recrystallization temperature in the range of 1250 °C.
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