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Investigation of Processes in Glass-Ceramic Solders of Sapphire-Niobium Seals in Gas-Discharge Lamps

  • S. A. Gavrilov
  • S. V. GavrishEmail author
  • S. V. Puchnina
AT ENTERPRISES AND INSTITUTES
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The processes occurring in glass-ceramic solders of sapphire-niobium seals, used as current lead-ins in gas-discharge lamps with a discharge in alkali-metal vapor, were studied. The structural changes occurring in the glass-ceramic solder, based on the system of oxides CaO–Al2O3 and CaO–MgO–Al2O3, upon heating to 1600°C with niobium diffusing into the melt, are analyzed on the basis of x-ray phase analysis of the composition and a study of the microhardness.

Key words

Sapphire niobium glass-ceramic solder temperature seal phase composition 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • S. A. Gavrilov
    • 1
  • S. V. Gavrish
    • 2
    Email author
  • S. V. Puchnina
    • 2
  1. 1.National Research University – Moscow Institute of ElectronicsMoscowRussia
  2. 2.Scientific and Industrial Complex for Special Sources of Radiation (NPK SII) – Special Design Office Zenit JSCMoscowRussia

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