Structural investigation of iron sulfides synthesized by mechanochemical reaction

C. K. Lin, C. L. Du, G. S. Chen, R. F. Louh, P. Y. Lee, H. M. Lin

研究成果: 雜誌貢獻文章同行評審

7 引文 斯高帕斯(Scopus)

摘要

In the current study, pure elemental powders of Fe and S were mixed to give the desired compositions of Fe67S33, Fe50S50 and Fe33S67. A SPEX 8000D high-energy ball mill was used to synthesize iron sulfide powders under an Ar-filled atmosphere. The as-milled powders were examined by conventional X-ray diffraction (XRD) and synchrotron X-ray absorption spectroscopy (XAS). The experimental results showed that mechanochemical reactions occurred during the ball milling process for all the compositions investigated. The Fe1-xS phase was observed at the end of milling. The formation time of the Fe1-xS phase increased with increasing sulfur content. Extended X-ray absorption fine structure (EXAFS) results revealed that the nearest neighbor bond lengths of the radial distribution function for iron decreased when iron sulfides formed. X-ray absorption near-edge structure (XANES) of sulfar K-edge distinguished better the structural evolution of these iron sulfides.
原文英語
頁(從 - 到)834-838
頁數5
期刊Materials Science and Engineering A
375-377
發行號1-2 SPEC. ISS.
DOIs
出版狀態已發佈 - 七月 2004
對外發佈

ASJC Scopus subject areas

  • 材料科學(全部)
  • 凝聚態物理學
  • 機械工業
  • 材料力學

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