Mossbauer study of products of low energy milled Fe30Si70

Citation
Yz. Li et al., Mossbauer study of products of low energy milled Fe30Si70, J PHYS-COND, 13(26), 2001, pp. 6019-6029
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
0953-8984 → ACNP
Volume
13
Issue
26
Year of publication
2001
Pages
6019 - 6029
Database
ISI
SICI code
0953-8984(20010702)13:26<6019:MSOPOL>2.0.ZU;2-P
Abstract
Measurements of x-ray diffraction pattern and Mossbauer spectra show that b eta -FeSi2 is produced in an Fe30Si70 powder sample by low energy ball mill ing, and its proportion increases step by step as the milling time increase s until the milling time reaches 60 h; after that this solid reaction reach es saturation. Within the final products, there is over 90% beta -FeSi2 and a little Fe and Si remnants. The remnant Fe exists in two forms: one is po wder and the second is enveloped by beta -FeSi2. When using hydrochloric ac id to treat the as-milled sample, the first form of Fe is removed but the s econd form of Fe still remains. When the sample is annealed at 600 degreesC , the proportion of beta -FeSi2 is close to 99% in the final products.