Title :
Post test examination of AMTEC electrodes from sodium exposure test cells
Author :
Schuller, Michael ; Fiebig, Brad ; Hudson, Patricia ; Williams, Alicia
Author_Institution :
Center for Space Power, Texas A&M Univ., College Station, TX, USA
Abstract :
In this paper we discuss electron microprobe results from WRh AMTEC electrodes tested in sodium exposure test cells. We compare and contrast the morphology and elemental distribution of WRh electrodes in the as sputtered condition with those after up to 1250 hours in sodium vapor at temperatures of 800-900°C
Keywords :
crystal morphology; electrodes; rhodium alloys; sodium; sputtered coatings; thermoelectric conversion; thermoelectric devices; tungsten alloys; 800 to 900 C; AMTEC electrodes; Na; Na vapour; WRh; WRh AMTEC electrodes; WRh electrodes; as sputtered condition; electron microprobe; morphology; post test examination; sodium exposure test cells; sodium vapor; Aluminum; Degradation; Electrodes; Electrons; Grain size; Morphology; Space stations; Testing; Thermal expansion; X-ray imaging;
Conference_Titel :
Energy Conversion Engineering Conference and Exhibit, 2000. (IECEC) 35th Intersociety
Conference_Location :
Las Vegas, NV
Print_ISBN :
1-56347-375-5
DOI :
10.1109/IECEC.2000.870857
