Characteristics of U_3Si and U_3Si_2 Powders Prepared by Centrifugal Atomization
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概要
- 論文の詳細を見る
The characteristics, that is, morphology, size distribution, alloy phase and microstructure of U<SUB>3</SUB>Si and U<SUB>3</SUB>Si<SUB>2</SUB> powders, solidified rapidly by a centrifugal atomization, were investigated. The atomized powders consist of spherical particles with a relatively narrow size distribution independent of the alloy composition. The particle size distribution can be controlled by adjusting the atomization parameters such as feeding rates of the melt and revolution speeds of the disk. The major phases of atomized U<SUB>3</SUB>Si and U<SUB>3</SUB>Si<SUB>2</SUB> powders are α-U and U<SUB>3</SUB>Si<SUB>2</SUB> and U<SUB>3</SUB>Si<SUB>2</SUB>, respectively. The atomized U<SUB>3</SUB>Si powder has a dendritic structure of very fine and non-faceted U<SUB>3</SUB>Si<SUB>2</SUB> precipitates with less fibric and eutectic U<SUB>3</SUB>Si<SUB>2</SUB> structure. The microstructure of U<SUB>3</SUB>Si<SUB>2</SUB> powder shows a cellular structure with fine U<SUB>3</SUB>Si<SUB>2</SUB> grains and finely dispersed silicon-rich precipitates. The time for complete peritectoid reaction of the atomized U<SUB>3</SUB>Si particles and the resulting grain size are greatly reduced, due to the refinement of primary U<SUB>3</SUB>Si<SUB>2</SUB> precipitates.
- 社団法人 日本原子力学会の論文
- 1997-12-25
著者
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KIM Chang
Korea Institute of Materials Science
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Kim Ki
Korea Atomic Energy Research Institute
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Kim Chang
Korea Advanced Institute Of Scierice And Technology
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LEE Don
Korea Atomic Institute of Science and Technology
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KUK Il
Korea Atomic Energy Research Institute
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PAIK Kyung
Korea Advanced Institute of Science and Technology
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