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Laser Ablation법에 의한 ZrVFe 합금 나노분말 제조
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  • Laser Ablation법에 의한 ZrVFe 합금 나노분말 제조
저자명
길대섭,서용재,장희동,이재천,송창빈,김원백,Kil. Daesup,Suh. Yongjae,Jang. Heedong,Lee. Jaechen,Song. Changbin,Kim. Wonbaek
간행물명
한국재료학회지
권/호정보
2005년|15권 4호|pp.257-262 (6 pages)
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한국재료학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Nano-sized ZrVFe alloy powders were prepared by the ablation of powder compact in alcobol using a Nd-YAG pulsed Laser. The $Zr_{57}V_{35.}8Fe_{7.2}$ alloy commercially designated as ST707 has long been known as the ideal solution for various vacuum applications. The target for the ablation was sintered pellets of $Zr_{57}V_{35.}8Fe_{7.2}$ alloy powder. The alloy was prepared by arc melting and Hydride-DeHydride method. The ablated powders were mostly circular having fairly large size distribution smaller than 200 nm in all cases. The X-ray diffraction study revealed that the ablated alloy retained the crystal structure of the target alloy. Nevertheless, Fe and V contents in the ablated powder were lower than those in the target alloy. This was believed to result from the high vapour pressures of Fe and V compared to that of Zr. The size of the powders ablated at high energy fluence tends to decrease due at least partly to the breakdown of previously made ones.