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Full-Text Articles in Physical Sciences and Mathematics
Brazed Lower Vacuum Housing For A Dewar, Timothy S. Romano, Tom K. Evans, Gary B. Hughes, Karl H. Neumann
Brazed Lower Vacuum Housing For A Dewar, Timothy S. Romano, Tom K. Evans, Gary B. Hughes, Karl H. Neumann
Statistics
A lower vacuum housing (34) of a sensor dewar (26) is fabricated in a single brazing operation from ceramic and metallic components. The components are assembled with ceramic-to-metal interfaces and metal-to-metal interfaces. Brazing is accomplished by active brazing of the ceramic-to-metal interfaces and non-active brazing of the metal-to-metal interfaces. Specific combinations of active braze alloys and non-active braze alloys are provided for various combinations of dewar materials.
Feedthrough Pin And Process For Its Preparation, And Electrical Feedthrough Made Therewith, Timothy S. Romano, Tom K. Evans, Gary B. Hughes, Karl H. Neumann
Feedthrough Pin And Process For Its Preparation, And Electrical Feedthrough Made Therewith, Timothy S. Romano, Tom K. Evans, Gary B. Hughes, Karl H. Neumann
Statistics
A feedthrough (34) is formed of a feedthrough plate (44) having at least one bore (46) therethrough and a feedthrough pin (48) hermetically sealed into the bore (46). The feedthrough pin (48) includes an elongated pin (50) having an axis of elongation (52), a recess (54) in at least one end of the pin (50), the recess (54) extending parallel to the axis of elongation (52), and a gold coating (56) within the recess (54). There are preferably a plurality of bores (46) in the feedthrough plate (48) and a corresponding plurality of the feedthrough pins (48). The gold coatings …