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Article: Role of furnace atmosphere in glass-to-metal sealing: Quality may suffer if a reducing atmosphere is selected to cut post-sealing cleaning requirements. An oxidizing atmosphere optimized to provide both quality and minimal scale formation is a better choice.
- Article from:
- Ceramic Industry
- Article date:
- July 1, 1989
- Author:
CopyrightCOPYRIGHT 1989 BNP Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Role of Furnace Atmosphere in Glass-to-Metal Sealing Quality may suffer if a reducing atmosphere is selected to cut post-sealing cleaning requirements. An oxidizing atmosphere optimized to provide both quality and minimal scale formation is a better choice Compression glass-to-metal seals are used as hermetic feedthrough terminals, battery and relay headers, multi-terminal electrical connectors, pressure sensors and sight glasses.
Seals are designed with outer metallic members that have greater thermal contraction than the insulating glass. The glass melts during sealing, filling the hole volume, and then becomes rigid when cooled below its set-point temperature. ...