Homogeneity of Sialon Ceramics.

• Shiogai Tatsuya

  Central Research Lagoratory, Nihon Cement Co., Ltd.

• Sashida Norikazu

  Central Research Lagoratory, Nihon Cement Co., Ltd.

• Tsukamoto Keizou

  Central Research Lagoratory, Nihon Cement Co., Ltd.

• Yamagishi Chitake

  Central Research Lagoratory, Nihon Cement Co., Ltd.

Bibliographic Information

Other Title

• サイアロンセラミックスの均一性
• サイアロン セラミックス ノ キンイツセイ

Abstract

The macroscopic inhomogeneity of Sialon ceramics was studied. There were two regions in the sintered body. One of regions was green region and the other was brown region. The fracture toughness of the sintered body with two regions had large difference, and the green region had low toughness. The regions were analyzed by UV spectroscopy, EPMA, XRD, SEM, and TEM. There was no difference in microstructure, but there was difference in electronic state, chemical composition, and crystal phase. From these fact, it is considered that the origin of macroscopic inhomogeneity is due to gas generated from decomposition of Sialon. The gas is shut in sintered body when densification is fast at surface, and the chemical composition of grain boundary or grain is changed by reaction with gas.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 43 (9), 1117-1121, 1996

  Japan Society of Powder and Powder Metallurgy

Keywords

• Sialon
• fracture toughness
• macroscopic inhomogeneity
• grain boundary
• microstructure

Details

• CRID: 1390282681284588416
• NII Article ID: 10002013097
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.43.1117
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 4036697
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4036697
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed