Fabrication and Emission Property of Polycrystalline CexPr1-xB6 Bulk Prepared by Spark Plasma Sintering
Vacuum Electronics Conference（2012）
Abstract
In this paper, the polycrystalline CexPr1-xB6 (0≤x≤0.6)) bulks were successfully fabricated by spark plasma sintering (SPS). A lot of experiments are conducted to testing the mechanical and emission properties. The technological applications parameters are following: the sintering temperature is 1450°C, the sintering pressure is 50 MPa and the holding time is 5 min. The maximum pulse thermionic emission density of Ce0.6Pr0.4B6 is 47.3 A·cm-2 at 1973K with voltage up to 950 V.
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Key words
cerium compounds,field emission,plasma materials processing,sintering,CexPr1-xB6,emission properties,emission property,holding time,maximum pulse thermionic emission density,mechanical properties,polycrystalline bulk,sintering pressure,sintering temperature,spark plasma sintering,emission property,rare earth hexaborides,spark plasma sintering
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