Fabrication and Mechanical Properties of Al2O3 Solid Solution with Low Addition of Cr2O3

C. L. Li, D. H. Riu, T. Sekino, K. Niihara

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Al2O3-Cr2O3 solid solution with low addition of 0.1 to 1.0 mol% Cr2O3 were fabricated by a conventional hot-pressing method, and their mechanical properties such as fracture toughness, strength and deformation behavior at room temperature were investigated as a function of the Cr2O3 content using the conventional and nano-indentation methods. The maximum fracture strength of Al2O3-Cr2O3 solid solutions was observed at 0.4 mol% Cr2O3 addition, and the hardness decreased with increasing Cr2O3 content up to 0.6 mol%, while the increasing hardness at above this content. Investigation of the indentation impression by means of atomic force microscope showed a completely plastic deformation under indentation load of 300 mN.

Original languageEnglish
Pages (from-to)161-164
Number of pages4
JournalKey Engineering Materials
Volume161-163
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • Berkovich Indenter
  • Indentation Test
  • Mechanical Property
  • Solid Solution

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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