Change in the short range order in the Al-transition metal hydroxides mixed system by mechanical stressing

S. Sekino, T. Isobe, M. Senna, T. Shinohara, F. Wagatsuma, K. Sumiyama, K. Suzuki

研究成果: Conference article

2 引用 (Scopus)

抜粋

The redox reaction between Al and Ni(OH)2 or Cu(OH)2 by milling was studied mainly by XRD, 27Al-NMR, 63Cu-NMR and SQUID. With the progress of milling, the crystallinity of Al and hydroxides were degraded, while new crystallized phases appeared. Oxidation of metallic Al was confirmed by 27Al-NMR spectra. A linear relationship with negative inclination was obtained between the Knight shift (27K) of 27Al-NMR and magnetic susceptibility (χ) for these milled products. This suggests that the electric field gradient of metallic Al nuclei be influenced by transition metal cations, accommodating in the surface oxide layer on metallic Al particles. From these observations, we conclude that redox reactions occur at the contact point between Al and transition metal hydroxides. Theoretical background of the reaction was also discussed.

元の言語English
ページ(範囲)I/-
ジャーナルMaterials Science Forum
343
出版物ステータスPublished - 2000 1 1
イベントISMANAM-99: The International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials - Dresden, Ger
継続期間: 1999 8 301999 9 3

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • これを引用

    Sekino, S., Isobe, T., Senna, M., Shinohara, T., Wagatsuma, F., Sumiyama, K., & Suzuki, K. (2000). Change in the short range order in the Al-transition metal hydroxides mixed system by mechanical stressing. Materials Science Forum, 343, I/-.