Sealing of Al-containing stainless steel to lithia-alumina-silica glass-ceramic
Recent work carried out on a new glass-ceramic/alloy material set for the application of pyrotechnic components is discussed. A newly developed family of austenitic stainless steels has been hermetically sealed to a widely used lithia-alumina-silica glass-ceramic. These alloys, originally developed for applications where high oxidation resistance is required, contain 4-5 wt pct aluminum. The presence of aluminum offers several advantages from a glass or glass-ceramic sealing point of view. These include the presence of a tenacious, stable oxide (Al2O3) on the alloys' surface as well as the fact that they can be strengthened during sealing via precipitation of a secondary phase, NiAl. In addition, these new alloys offer lower material and machining costs, and improved weldability when compared to the widely used Ni-based superalloys.
- OSTI ID:
- 7144463
- Report Number(s):
- CONF-890130--
- Journal Information:
- Ceramic Engineering and Science Proceedings; (USA), Journal Name: Ceramic Engineering and Science Proceedings; (USA) Vol. 10; ISSN 0196-6219; ISSN CESPD
- Country of Publication:
- United States
- Language:
- English
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Sealing 304L to lithia-alumina-silica (LAS) glass-ceramics
Sealing 304L to lithia-alumina-silica (LAS) glass-ceramics
Related Subjects
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALKALI METAL COMPOUNDS
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AUSTENITIC STEELS
CHALCOGENIDES
COMPOSITE MATERIALS
CORROSION RESISTANCE
FABRICATION
GLASS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
LITHIUM COMPOUNDS
LITHIUM OXIDES
MATERIALS
NICKEL ALLOYS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
STEELS
USES