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초미세 결정립을 가지는 몰리브덴의 제조 및 기계적 특성Fabrication of Ultra Fine Grained Molybdenum and Mechanical Properties
- Other Titles
- Fabrication of Ultra Fine Grained Molybdenum and Mechanical Properties
- Issue Date
- Jun-2010
- Publisher
- 한국분말야금학회
- Keywords
- Nanostructured Mo powder; Two-step sintering; Spark plasma sintering; Ultra fine grained molybdenum
- Citation
- 한국분말야금학회지, v.17, no.3, pp.235 - 241
- Indexed
- KCI
- Journal Title
- 한국분말야금학회지
- Volume
- 17
- Number
- 3
- Start Page
- 235
- End Page
- 241
- ISSN
- 1225-7591
- Abstract
- Mo nanopowder was synthesized by ball-milling and subsequent hydrogen-reduction of MoO3powder. To fabricate ultra fine grained molybdenum, two-step sintering and spark plasma sintering process were employed. The grain size of specimen by two-step sintering and spark plasma sintering was around 0.6μm and 0.4 μm, respectively. Mechanical properties of ultra fine grained Mo with relative density of above 90% were significantly improved at room and high temperatures comparing to commercial bulk Mo of 99%relative density. This result was mainly explained by the grain size refinement due to diffusion-controlled sintering.
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Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
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Related Researcher
- Kim, Young Do
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)