Temperature dependence of the elastic moduli, dilational and shear internal frictions and acoustic wave velocity for alumina, (Y)TZP and β′-sialon ceramics

M. Fukuhara, I. Yamauchi

Research output: Contribution to journalArticlepeer-review

111 Citations (Scopus)

Abstract

Young's, shear and bulk moduli, Poisson's ratio and Lamé parameters, longitudinal and transverse internal friction values and acoustic wave velocity anisotropy factors for three kinds of polycrystalline compounds, α-alumina, yttria-stabilized tetragonal zirconia polycrystal, (Y)TZP, and β′-sialon, (Si,Al)3(N, O)4, were simultaneously measured over a temperature range 295-1773 K, by an ultrasonic pulse sing-around method. These elastic moduli and Lamé parameters decreases and Poisson's ratio increases with increasing temperature, suggesting activation of a shear mode in the high-temperature region. The high-temperature shear internal friction for (Y)TZP and sialon were more sensitive to relief of strain and softening of glassy phase at grain boundaries, respectively, compared with the dilational friction.

Original languageEnglish
Pages (from-to)4681-4688
Number of pages8
JournalJournal of Materials Science
Volume28
Issue number17
DOIs
Publication statusPublished - 1993 Jan 1

ASJC Scopus subject areas

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

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