Anomalous grain growth during hot isostatic pressing of magnesia ceramics made from starting powders with different coarse/fine mixing ratios

Akira Kishimoto, Masaaki Hanao, Hidetaka Hayashi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The influence of coarse powder on grain growth during hot isostatic pressing (HIP) was examined. Powder mixtures containing 0%, 0.5%, 5% and 20% coarse powder were prepared. The magnesia sintered without pressure was subjected to HIP at 1600 °C for 0.5 h at different pressures. The samples produced from fine powder had the largest grains after HIP treatment, although they had the smallest grains before it. The optical transparency of the HIP-treated magnesia ceramics increased with grain size.

Original languageEnglish
Pages (from-to)321-324
Number of pages4
JournalScripta Materialia
Volume57
Issue number4
DOIs
Publication statusPublished - Aug 1 2007

Keywords

  • Abnormal grain growth
  • HIP
  • MgO
  • Optical transmission

ASJC Scopus subject areas

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

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