Investigation of beryllium pebbles produced by powder metallurgy for HCPB breeding blanket

Investigation of beryllium pebbles produced by powder metallurgy for HCPB breeding blanket

This paper presents the results of investigation of three batches of beryllium pebbles with average pebble size of 1.2–1.3 mm and different average grain sizes (13–14 μm, ∼50 μm and ∼615 μm). Microstructure and chemical composition of produced beryllium pebbles are presented as well as packing densi...

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Veröffentlicht in:Fusion engineering and design 2018-11, Vol.136, p.1077-1083
Hauptverfasser: Kupriyanov, I.B., Nikolaev, G.N., Zavjalov, S.K., Kurbatova, L.A., Zabirova, N.E., Chakin, V.P.
Format: Artikel
Sprache:eng
Schlagworte:
Beryllium
Beryllium pebbles
Breeding blanket
Chemical composition
Densification
Grain size
Grain size distribution
High temperature
Metallurgical analysis
Microstructure
Multiplier
Neutron
Neutron irradiation
Neutrons
Organic chemistry
Packing density
Powder metallurgy
Tritium
Tritium release
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Beschreibung
Zusammenfassung:This paper presents the results of investigation of three batches of beryllium pebbles with average pebble size of 1.2–1.3 mm and different average grain sizes (13–14 μm, ∼50 μm and ∼615 μm). Microstructure and chemical composition of produced beryllium pebbles are presented as well as packing density and pebble size distribution. The influence of grain size on tritium release and retention in Be pebbles during temperature programmed desorption (TPD) after high-temperature loading of tritium/hydrogen gas mixture are also described.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2018.04.073