EXAFS Study of Mechanically Alloyed Ni-Ta Powder
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
15th Colloquium on Materials Analysis
27-29 мая 1991
,
Vienna
|
| Журнал |
Microchimica Acta
ISSN: 0026-3672
, E-ISSN: 1436-5073
|
| Вых. Данные |
Год: 1992,
Том: 107,
Номер: 3-6,
Страницы: 235-243
Страниц
: 9
DOI:
10.1007/BF01244477
|
| Ключевые слова |
EXAFS spectroscopy, mechanical alloying, shortrange order, X-ray scattering |
| Авторы |
Zschech Ehrenfried
1
,
Novgorodov Boris N.
2
,
Zbiral Johannes
3
,
Jangg Gerhard
3
,
Ullrich Hans-Jürgen
4
|
| Организации |
| 1 |
Institut fur Keramische Werkstoffe, Bergakademie Freiberg, Gustav-Zeuner-Strasse, D-O-9200 Freiberg, Federal Republic of Germany
|
| 2 |
Institute of Catalysis of the Sibirian Branch of the Soviet Academy of Science, SU-690090 Novosibirsk, U.S.S.R.
|
| 3 |
Institut fur chemische Technologie anorganischer Stoffe, Technische Universitat Wien, Getreidemarkt 9, A-1060 Wien, Austria
|
| 4 |
Institut fur Werkstoffwissenschaften, Technische Universitat Dresden, Mommsenstrasse 13, D-O-8027 Dresden, Federal Republic of Germany
|
|
Amorphous Ni-Ta was obtained by mechanically alloying pure crystalline powders of nickel and tantalum. Structural changes in the local atomic arrangement effected by the mechanical treatment were studied by X-ray scattering and EXAFS spectroscopy. Both X-ray scattering and EXAFS data represent the destruction of long-range order with increasing milling time, i.e., the crystalline-to-amorphous transition. In contrast to an EXAFS study on the Ni-Ti system, our analysis does not confirm the presence of chemical short-range order.