Development of an advanced fabrication process; Oxidation of MOX raw powders and sintering property of the oxidized powders

Segawa, Tomoomi

Oxidation behavior of MOX raw powders and sintering property of the pellets fabricated with oxidized powders were studied. Oxidation and reduction of M $_{3}$ O $_{8}$ phase in oxidized powders and the influence of M $_{3}$ O $_{8}$ phase on MOX pellets were evaluated. It was observed that the oxidation process had two steps. In the first oxidation step, the oxidation proceeds by the precipitation of M $_{4}$ O $_{9}$ phase. In the second oxidation step, M $_{3}$ O $_{8}$ phase precipitated. There were some cracks in the pellets fabricated with the powders containing M $_{3}$ O $_{8}$ phase, but there were no cracks in the pellets fabricated with the powders free from M $_{3}$ O $_{8}$ phase.

Language	:	Japanese
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Meeting title	:	平成21年度日本原子力学会北関東支部若手研究者発表会
Held date	:	2009/04
Location (city)	:	東海
Location (country)	:	日本
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Keywords	:	no keyword
Research Facility	:	プルトニウム燃料製造施設
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Registration No. : BB20090198
JAEA Abstracts No. :
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