한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)

한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지

자기펄스 성형법에 의한 $TiO_2$+Ti 혼합 분말의 치밀화 거동

Densification of $TiO_2$+Ti powder by Magnetic Pulsed Compaction

  • Park, J.S. (Division of Advanced Materials Engineering, Kongju National University) ;
  • Kim, H.S. (Division of Advanced Materials Engineering, Kongju National University) ;
  • Lee, J.G. (Nuclear Materials Research Division, Korea Atomic Energy Research Institute) ;
  • Rhee, C.K. (Nuclear Materials Research Division, Korea Atomic Energy Research Institute) ;
  • Hong, S.J. (Division of Advanced Materials Engineering, Kongju National University)
  • 발행 : 2008.10.09
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초록

In this research, the fine-structure TiO2+Ti bulks have been fabricated by the combined application of magnetic pulsed compaction (MPC) and subsequent sintering, and their densification behavior was investigated. The obtained density of $TiO_2$+Ti bulk prepared by the combined processes was increased with increasing MPC pressure from 0.7 to 1.7 GPa. Relatively higher density (88%) in the MPCed specimen at 0.7Gpa was attributed to the decreasing of the inter-particle distance of pre-compacted component. High pressure and rapid compaction by Magnetic Pulsed Compaction could reduce shrinkage rate (about 10%) of the sintered bulks compared to that of general processing (about 20%). Mixing conditions of PVA, water, Ti and $TiO_2$ nano powder for compaction of $TiO_2$ nano powder did not affect on density and shrinkage of the sintered bulks due to high pressure of MPC.

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