Microstructural characteristics and mechanical properties for Al2O3/metal nanocomposities

T. Sekino, K. Niihara

Research output: Contribution to journalArticlepeer-review

102 Citations (Scopus)

Abstract

High density Al2O3/W nanocomposite has been successfully fabricated by using controlled reduction and hot-pressing of Al2O3/WO3 mixtures. For realizing desirable microstructures, chemical processing was used to prepare the mixtures by using an inorganic salt as a starting material of W03. TEM investigation revealed that the very fine WO3 particles surrounded Al2O3 particles. During the sintering process under the reductive atmosphere, WO3 was reduced to metal particles. TEM observation indicated that the nanometer-sized W particles were mainly located within the A12O3 matrix grains. The mechanical properties were improved by dispersing small amount of nanometer-sized metal particles and resultant internal stresses.

Original languageEnglish
Pages (from-to)663-666
Number of pages4
JournalNanostructured Materials
Volume6
Issue number5-8
DOIs
Publication statusPublished - 1995

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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