HIGH THERMAL CONDUCTIVITY ALN FOR MICROWAVE TUBE APPLICATIONS
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United States of America Patent
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N/A
Issued Date -
Dec 20, 2001
app pub date -
Oct 18, 1999
filing date -
Oct 18, 1999
priority date (Note) -
Abandoned
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Abstract
Dense, high thermal conductivity AIN ceramic is described (along with a method of manufacture) which can be used in microwave tubes as collector rods, Helix support rods, T rods, etc. instead of BeO ceramic. High thermal conductivity, vacuum compatibility, low dielectric loss tangent at microwave frequencies, high electrical resistivity and dielectric strength are AIN properties allowing the material to be used in traveling wave tubes, particle accelerators or as laser bores and in other similar applications. These materials allow the replacement of BeO, which is a toxic material with diminishing availability in the United States and on the world market.
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