한국분말야금학회:학술대회논문집 (Proceedings of the Korean Powder Metallurgy Institute Conference)
- 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part 1
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- Pages.422-423
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- 2006
Synthesis of Nanocomposite Powder for Tungsten Heavy Alloy by Hydrogen Reduction of Ultrasonic-milled Oxide Nanopowders
- Lee, Chang-Woo (Department of Metallurgy and Materials Science, Hanyang University) ;
- Lee, Seung-Chul (Department of Metallurgy and Materials Science, Hanyang University) ;
- Lee, Jai-Sung (Department of Metallurgy and Materials Science, Hanyang University)
- 발행 : 2006.09.24
초록
Ultrasonic-milling of metal oxide nanopowders for the preparation of tungsten heavy alloys was investigated. Milling time was selected as a process variable. XRD results of metal oxide nanopowders ultrasonic-milled for 50 and 100h showed that mean crystallite size reduced with increasing milling time and there was no evidence of contamination or change of composition by impurities. It was found that nanocomposite powders reduced at