Fabrication of MgO based nanocomposites with multifunctionality

T. Nakayama, Bum Sung Kim, Hiroki Kondo, Yong Ho Choa, Tohru Sekino, Masaaki Nagashima, Takafumi Kusunose, Yamato Hayashi, Koichi Niihara

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The nanocrysialline FeCo alloy dispersed MgO nanocomposites were fabricated by the reduction and sintering of mixtures. The powder mixtures of nano-sized FeCo alloy and MgO were obtained by the solution chemical processes and hydrogen reduction of MgO, Fe- and Co-nitrates powders. Fully densitified MgO/FeCo alloy nanocomposites were fabricated by a pulse electric current sintering (PECS) method. The fracture toughness increased with increasing volume fraction of FeCo alloy. Moreover, an inverse magnetostrictive response to applied stress was obserserved, because of the FeCo alloy dispersions, which indicates promise for incorporating multifunctions such as stress sensing into the structural ceramics with high fracture toughness.

Original languageEnglish
Pages (from-to)259-264
Number of pages6
JournalJournal of the European Ceramic Society
Volume24
Issue number2
DOIs
Publication statusPublished - 2004 Feb

Keywords

  • Magnetic properties
  • Mechanical properties
  • MgO
  • Multifunctionality
  • Nanocomposites

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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