Lattice parameters of mixed oxides in Sm-U-O system.

スポンサーリンク

概要

• 論文の詳細を見る

• The oxidation-reduction properties of mixed oxides in the system Sm-U-0 and the varia-tion of their lattice parameters due to oxidation and reduction were examined by means of thermogravimetry and X-ray diffraction. For mixed oxides Sm<SUB>y</SUB>U<SUB>1-y</SUB>O<SUB>2±x</SUB> prepared in air, the O/M ratio decreased linearly from 2.667 at y=0 to nearly stoichiometric 2.02 at y=0.5. The O/M ratios at y>0.5 were on the line connecting 2.667 at y=0 with 1.50 at y=1. The single phase region of the fluorite structure was between y=0.5 and 0.6. The lattice parameters of the fluorite phase at y ?? 0.6 were constant, 5.418×10<SUP>-10</SUP> m. For mixed oxides prepared in hydrogen, the O/M ratio decreased linearly from 2.00 at y=0 to 1.84 at y=0.5, and from 1.84 at Y=0.5 to 1.50 at y=1. The quenched oxides were single phase compounds except those for y=0.1, 0.6 and 0.9. The lattice parameter of the fluorite structure de-creased from 5.4700 at y=0 to 5.427×10<SUP>-10</SUP> m of Sm<SUB>0.4</SUB>U<SUB>0.6</SUB>O<SUB>1.854</SUB>, and was kept constant be-tween y=0.4 and 0.5, then increased to 5.466 ×10<SUP>-10</SUP> m at y=0.7. The Sm-U-O phase diagram at 1, 000°C was constructed on the basis of the X-ray diffraction work.

• 一般社団法人 日本原子力学会の論文

著者

• Watanabe Kenju

  Department Of 2nd Surgery School Of Medicine Hiroshma University

• TAGAWA Hiroaki

  Institute of Environmental Science and Technology, Yokohama National University

• Tagawa Hiroaki

  Institute Of Enviromental Science And Technology Yokohama National University

• FUJINO Takeo

  Division of Chemistry, Japan Atomic Energy Research Institute

• OUCHI Kinji

  Division of Chemistry, Japan Atomic Energy Research Institute

• MORIMOTO Takao

  Department of Chemistry, Tokyo Gakugei University

• WATANABE Kenju

  Department of Chemistry, Tokyo Gakugei University

関連論文

• B-37. Study on Cerebral Microvasculature and Cerebral Vascular Bed Volume in Acute Brain Swelling using Immunoflorescence Method and Quantitative Immunoelectrophoresis.
• La2-xSrxCuO4-δの高温電気伝導特性・熱電特性と欠陥構造
• SnSO4を含む硫酸ナトリウム電解質溶液における薄膜SnO2電極のインピ-ダンス測定
• Lattice parameters of mixed oxides in Sm-U-O system.
• Oxidation-reduction properties of mixed oxides in the cerium-uranium-oxygen system.
• Formation and properties of strontium uranates.
• Oxidation-reduction properties of mixed oxides in lanthanum-uranium-oxygen system.

スポンサーリンク