Mechanical and magnetic properties of nickel dispersed alumina-based nanocomposite

Tohru Sekino, Toshio Nakajima, Koichi Niihara

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)


High-density Al2O3/Ni composite with a particular microstructure which ensures superior mechanical and magnetic properties has been developed by hydrogen reduction of NiO to Ni and subsequent hot-pressing of Al2O3/nano-sized Ni mixed powder. The nickel nitrate was selected as a starting material of NiO. Microscopic observations revealed that the fine Ni particles - size of about 100 nm - were dispersed homogeneously at the matrix grain boundaries, thus forming intergranular nanocomposite. The composite containing even a small amount of dispersed Ni exhibited considerably high fracture strength. Moreover, the composite has been found to show ferromagnetic properties due to Ni dispersion, which points out the possibility of adding a functional value to structural composites.

Original languageEnglish
Pages (from-to)165-169
Number of pages5
JournalMaterials Letters
Issue number1-3
Publication statusPublished - 1996 Nov
Externally publishedYes


  • Ceramic/metal system
  • Fracture strength
  • Hot-pressing
  • Magnetic properties
  • Nanocomposite
  • Reduction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'Mechanical and magnetic properties of nickel dispersed alumina-based nanocomposite'. Together they form a unique fingerprint.

Cite this