Mo nanopowder was synthesized by ball-milling and subsequent hydrogen-reduction of powder. 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 and , 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.

• 김세훈 | Kim Se-Hoon
• 서영익 | Seo Young-Ik
• 김대건 | Kim Dae-Gun
• 석명진 | Suk Myung-Jin
• 김영도 | Kim Young-Do