Evaluation of Two Types of Oxygen-Dispensing Collectors for Thermionics General Atomics

Format:

Conference/Event

Author/Creator:

Desplat, Jean-Louis, author.

Conference Name:

34th Intersociety Energy Conversion Engineering Conference (1999-08-02 : Vancouver, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Two types of oxygenated collectors were tested against the same emitter, to evaluate their ability to provide stable, enhanced thermionic performance. These two types were: sublimed Mo oxide layers, and a Nb-O single crystal alloy. Initially, the Mo oxide layers provided excellent thermionic performance, but degradation occurred, latter associated with emitter material transport and condensation on the collectors. By contrast, when used in conjunction with an internal getter, the Nb-O alloy resulted in somewhat lower, but stable performance, after an activation process. This activation process was associated with changes in the surface chemistry

Notes:

Vendor supplied data

Publisher Number:

1999-01-2459

Access Restriction:

Restricted for use by site license