X-Ray Diffraction Study on Ultrafine Particles of Ag-Cu Alloys Prepared by "Hydrogen Plasma-Metal" Reaction Method

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概要

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• A series of ultrafine particles (UFP) in Ag_xCu_<100-x> alloys was prepared by the "hydrogen plasma-metal" reaction method with changing composition x_b of bulk parent alloys. The changes in diffraction profiles and lattice constants on x_b were investigated by X-ray diffraction and least-squares pattern fitting methods. On the Cu-rich side (x_b<50), the UFP was composed of three metastable phases: Cu-rich 1 phase (x=6.1∼5.3), Cu-rich 2 phase (x∼12.2) and Ag-rich phase (x=94.8∼91.0). In these, the solubility of Ag in the Cu-rich 2 phase was about 2.5 times as large as the maximum value (x=4.9) at the eutectic temperature of the equilibrium phase diagram. On the Ag-rich side together with x_b=50, the UFP was composed of Cu-rich 1 phase (x∼5.3) and Ag-rich phase (x∼91.7) except for x_b=90. The total concentration of Ag in the UFP noticeably deviated positively from x_b.

• 社団法人応用物理学会の論文
• 1992-07-15

著者

• NAKAHIGASHI Kiyotaka

  Department of Materials Science, University of Osaka Prefecture

• MINAMIGAWA Shinnosuke

  Department of Materials Science, University of Osaka Prefecture

• KOGACHI Mineo

  Department of Materials Science, University of Osaka Prefecture

• Minamigawa S

  Department Of Materials Science College Of Integrated Arts And Sciences University Of Osaka Prefectu

• Minamigawa Shinnosuke

  Department Of Materials Science University Of Osaka Prefecture

• ISHIBASHI Hiroki

  Departement of Materials Science, Osaka Prefecture University

• Ishibashi Hiroki

  Department Of Materials Science College Of Integrated Arts And Sciences University Of Osaka Prefectu

• Ishibashi Hiroki

  Departement Of Materials Science Osaka Prefecture University

• Minamigawa Shinnosuke

  Department Of Materials Science College Of Integrated Arts And Sciences University Of Osaka Prefectu

• Nakamae Kazuo

  Institute Of Laser Engineering Osaka University:university Of Osaka Prefecture

• Kogachi M

  Department Of Materials Science College Of Integrated Arts And Sciences University Of Osaka Prefectu

• Kogachi Mineo

  Department Of Material Science University Of Osaka Prefecture

• Nakahigashi K

  Institute Of Laser Engineering Osaka University:university Of Osaka Prefecture

• Nakahigashi Kiyotaka

  Department Of Material Science University Of Osaka Prefecture

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