한국재료학회지 (Korean Journal of Materials Research)

  • 제18권8호
  • /
  • Pages.411-416
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  • 2008
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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자기펄스 성형법에 의한 TiO2 나노 분말의 치밀화

Densification of TiO2 Nano Powder by Magnetic Pulsed Compaction

  • Kim, Hyo-Seob (Division of Advanced Materials Engineering, Kongju National University) ;
  • Lee, Jeong-Goo (Nuclear Materials Research Division, Korea Atomic Energy Research Institute) ;
  • Rhee, Chang-Kyu (Nuclear Materials Research Division, Korea Atomic Energy Research Institute) ;
  • Koo, Jar-Myung (Division of Advanced Materials Engineering, Kongju National University) ;
  • Hong, Soon-Jik (Division of Advanced Materials Engineering, Kongju National University)
  • 발행 : 2008.08.31
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초록

In this research, fine-structure TiO2 bulks were fabricated in a combined application of magnetic pulsed compaction (MPC) and subsequent sintering and their densification behavior was investigated. The obtained density of $TiO_2$ bulk prepared via the combined processes increased as the MPC pressure increased from 0.3 to 0.7 GPa. Relatively higher density (88%) in the MPCed specimen at 0.7 GPa was attributed to the decrease of the inter-particle distance of the pre-compacted component. High pressure and rapid compaction using magnetic pulsed compaction reduced the shrinkage rate (about 10% in this case) of the sintered bulks compared to general processing (about 20%). The mixing conditions of PVA, water, and $TiO_2$ nano powder for the compaction of $TiO_2$ nano powder did not affect the density and shrinkage of the sintered bulks due to the high pressure of the MPC.

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참고문헌

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