Preparation and mechanical properties of polycrystalline yttrium aluminum garnet

H. Z. Wang, L. Gao, K. Hirokazu, S. Tohru, N. Koichi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

YAG powder was prepared by co-precipitation method, and Al and Y elements were uniformly distributed in powder. After calcination at 900°C for 2 h, pure YAG phases can be obtained. The powder has good sintering ability, and dense bodies could be obtained by hot-pressing at 1500°C for 1 h. Its bending strength and fracture toughness are 245 MPa and 2.0 Mpa·m1/2, respectively. Through SEM observation, the grain size is about 3-6 μm. Spark plasma sintering was also employed to produce sintering body, 93% relative density could be obtained at 1400°C for 5 min. Its bending strength is 348 MPa, and fracture toughness is 2.1 MPa·m1/2. Its grain size is about 1-2 μm.

Original languageEnglish
Pages (from-to)35-38
Number of pages4
JournalKuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society
Volume29
Issue number1
Publication statusPublished - 2001 Feb 1

Keywords

  • Mechanical properties
  • Preparation
  • Spark plasma sintering
  • Yttrium aluminum garnet

ASJC Scopus subject areas

  • Ceramics and Composites
  • Inorganic Chemistry
  • Materials Chemistry

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