Development of a low-permeability glass--ceramic to seal to molybdenum. [For long-life vacuum tubes]
This report describes the development of low-permeability glass-ceramics which can be sealed directly to molybdenum for the purpose of producing long-life vacuum tubes. Low permeability to helium and thermal expansion match to molybdenum are the bases upon which particular glass-ceramic compositions were selected and developed. The fabrication of tube envelopes using glass-ceramics is simplified when compared to conventional ceramic/metal tubes and these melting and sealing techniques are presented.
- Research Organization:
- Sandia Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- AT(29-1)-789
- OSTI ID:
- 7157106
- Report Number(s):
- SAND--74-0140
- Country of Publication:
- United States
- Language:
- English
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