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

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

研究成果: Chapter

2 引用 (Scopus)

抄録

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
ホスト出版物のタイトルMaterials Science Forum
出版者Trans Tech Publ
343
出版物ステータスPublished - 2000
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

Other

OtherISMANAM-99: The International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials
Dresden, Ger
期間99/8/3099/9/3

Fingerprint

Hydroxides
Transition metals
Nuclear magnetic resonance
Redox reactions
SQUIDs
Point contacts
Magnetic susceptibility
Oxides
Cations
Positive ions
Electric fields
Oxidation

ASJC Scopus subject areas

  • Materials Science(all)

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 (巻 343). Trans Tech Publ.

Change in the short range order in the Al-transition metal hydroxides mixed system by mechanical stressing. / Sekino, S.; Isobe, Tetsuhiko; Senna, M.; Shinohara, T.; Wagatsuma, F.; Sumiyama, K.; Suzuki, K.

Materials Science Forum. 巻 343 Trans Tech Publ, 2000.

研究成果: Chapter

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. 巻. 343, Trans Tech Publ, ISMANAM-99: The International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials, Dresden, Ger, 99/8/30.
Sekino S, Isobe T, Senna M, Shinohara T, Wagatsuma F, Sumiyama K その他. Change in the short range order in the Al-transition metal hydroxides mixed system by mechanical stressing. : Materials Science Forum. 巻 343. Trans Tech Publ. 2000
Sekino, S. ; Isobe, Tetsuhiko ; Senna, M. ; Shinohara, T. ; Wagatsuma, F. ; Sumiyama, K. ; Suzuki, K. / Change in the short range order in the Al-transition metal hydroxides mixed system by mechanical stressing. Materials Science Forum. 巻 343 Trans Tech Publ, 2000.
@inbook{b164b03ba90f447f954ba7b3da5fa94d,
title = "Change in the short range order in the Al-transition metal hydroxides mixed system by mechanical stressing",
abstract = "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.",
author = "S. Sekino and Tetsuhiko Isobe and M. Senna and T. Shinohara and F. Wagatsuma and K. Sumiyama and K. Suzuki",
year = "2000",
language = "English",
volume = "343",
booktitle = "Materials Science Forum",
publisher = "Trans Tech Publ",

}

TY - CHAP

T1 - Change in the short range order in the Al-transition metal hydroxides mixed system by mechanical stressing

AU - Sekino, S.

AU - Isobe, Tetsuhiko

AU - Senna, M.

AU - Shinohara, T.

AU - Wagatsuma, F.

AU - Sumiyama, K.

AU - Suzuki, K.

PY - 2000

Y1 - 2000

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0033700642&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033700642&partnerID=8YFLogxK

M3 - Chapter

AN - SCOPUS:0033700642

VL - 343

BT - Materials Science Forum

PB - Trans Tech Publ

ER -