EXAFS studies of amorphous Fe50Ta50 powders during mechanical alloying

C. K. Lin, P. Y. Lee, J. L. Yang, C. Y. Tung, N. F. Cheng, Y. K. Hwu

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The progress of the preparation of amorphous Fe50Ta50 alloy powders, starting from elemental Fe and Ta crystalline powder mixtures, by mechanical alloying using a SPEX high energy ball mill was investigated. The as-milled Fe50Ta50 powders were examined as a function of milling time by scanning electron microscopy (SEM), microhardness, X-ray diffraction, differential thermal analysis (DTA), and extended X-ray absorption fine structure (EXAFS). The radial distribution functions (RDFs) obtained from Fourier transformation of EXAFS spectra reveal that there are differences in local atomic structure after prolong milling. When combined with information from other techniques, the results allow the amorphization process for Fe50Ta50 during the mechanical alloying (MA) to be better understood.

Original languageEnglish
Pages (from-to)520-525
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume232-234
Publication statusPublished - Jul 11 1998
Externally publishedYes

Fingerprint

Mechanical alloying
X ray absorption
Powders
alloying
fine structure
x rays
Ball mills
Amorphization
Fourier transformation
Amorphous alloys
radial distribution
atomic structure
Microhardness
microhardness
Differential thermal analysis
Distribution functions
balls
thermal analysis
distribution functions
Crystalline materials

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Cite this

Lin, C. K., Lee, P. Y., Yang, J. L., Tung, C. Y., Cheng, N. F., & Hwu, Y. K. (1998). EXAFS studies of amorphous Fe50Ta50 powders during mechanical alloying. Journal of Non-Crystalline Solids, 232-234, 520-525.

EXAFS studies of amorphous Fe50Ta50 powders during mechanical alloying. / Lin, C. K.; Lee, P. Y.; Yang, J. L.; Tung, C. Y.; Cheng, N. F.; Hwu, Y. K.

In: Journal of Non-Crystalline Solids, Vol. 232-234, 11.07.1998, p. 520-525.

Research output: Contribution to journalArticle

Lin, CK, Lee, PY, Yang, JL, Tung, CY, Cheng, NF & Hwu, YK 1998, 'EXAFS studies of amorphous Fe50Ta50 powders during mechanical alloying', Journal of Non-Crystalline Solids, vol. 232-234, pp. 520-525.
Lin CK, Lee PY, Yang JL, Tung CY, Cheng NF, Hwu YK. EXAFS studies of amorphous Fe50Ta50 powders during mechanical alloying. Journal of Non-Crystalline Solids. 1998 Jul 11;232-234:520-525.
Lin, C. K. ; Lee, P. Y. ; Yang, J. L. ; Tung, C. Y. ; Cheng, N. F. ; Hwu, Y. K. / EXAFS studies of amorphous Fe50Ta50 powders during mechanical alloying. In: Journal of Non-Crystalline Solids. 1998 ; Vol. 232-234. pp. 520-525.
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