• 제목/요약/키워드: 비정질합금

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Fabrication and structural observation of amorphous V-Co alloy by mechanical alloying (MA법에 의한 V-Co계 비정질합금의 제조 및 구조분석)

  • Lee, Chung-Hyo
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.22 no.1
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    • pp.51-56
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    • 2012

  • In the present study, we investigated the effect of mechanical alloying (MA) on the formation of amorphous VCo system through solid state reaction during ball milling. Two types of powder samples, ${\sigma}$-VCo intermetallic compound and $V_{50}Co_{50}$ powder mixture, were applied as a starting materials. With increasing milling time, a structural characteristics into the amorphous state is distinctly observed from the structural factor and radial distribution by X-ray diffraction. Amorphization has been observed in all two types of samples after the milling for 120 hrs. DSC spectrum of $V_{50}Co_{50}$ powder sample milled for 60 hrs indicates a sharp exothermic peak from the crystallization at $600^{\circ}C$. The structure factor, S(Q) and radial distribution function, RDF(r), observed by X-ray diffraction gradually change into a structure characteristic of an amorphous state with increasing MA time.

  • https://doi.org/10.6111/JKCGCT.2012.22.1.051 인용 PDF KSCI