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- W1965232023 abstract "본 연구에서는 출발원료로 <TEX>${sigma}$</TEX>-VCo 금속간화합물과 <TEX>$V_{50}Co_{50}$</TEX> 혼합분말을 각각 사용하여 기계적 합금화에 따른 비정질화 가능성을 조사하였다. X선 회절에 의해 얻어진 전구조인자 S(Q) 및 동경분포함수 RDF(r)의 결과로부터 볼밀링이 진행됨에 따라 비정질상의 구조적 특징이 분명히 관찰되었다. 120시간 MA 처리에 의하여 두 경우 모두에서 비정질상이 생성됨을 알 수 있었다. 60시간 동안 MA 처리한 <TEX>$V_{50}Co_{50}$</TEX> 분말시료의 열분석 에서는 약 <TEX>$600^{circ}C$</TEX>에 비정질상의 결정화에 의한 발열 peak가 관찰되었다. X선 회절법에 의해 얻어진 전구조인자 및 동경분포함수의 분석으로부터 MA 시간에 따라 출발 결정상은 비정질상의 특징적인 원자구조로 서서히 변화함을 알 수 있었다. 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, <TEX>${sigma}$</TEX>-VCo intermetallic compound and <TEX>$V_{50}Co_{50}$</TEX> 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 <TEX>$V_{50}Co_{50}$</TEX> powder sample milled for 60 hrs indicates a sharp exothermic peak from the crystallization at <TEX>$600^{circ}C$</TEX>. 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." @default.
- W1965232023 created "2016-06-24" @default.
- W1965232023 creator A5000681694 @default.
- W1965232023 date "2012-02-29" @default.
- W1965232023 modified "2023-10-18" @default.
- W1965232023 title "Fabrication and structural observation of amorphous V-Co alloy by mechanical alloying" @default.
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- W1965232023 doi "https://doi.org/10.6111/jkcgct.2012.22.1.051" @default.
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