Microstructure of Nonohmic Zinc Oxide Ceramics

• Inada Masanori

  Wireless Research Laboratory, Matsushita Electric Industrial Co., Ltd.

抄録

The existing and distributing states of crystal phases in the nonohmic zinc oxide ceramics with five additives, 0.5Bi₂O₃, 1.0Sb₂O₃, 0.5Co₂O₃, 0.5MnO₂ and 0.5Cr₂O₃ (mol.%) were investigated by using various analytical techniques. The ceramics consist of the ZnO and spinel phases and mixed phases of β-and δ-Bi₂O₃. The ZnO phase corresponds to the main constituent grains, which are single crystals 10 to 20 microns in size with a twinning structure and randomly orientated. The spinel phase corresponds to single crystal grains a few microns in size, which are discontinuously located along comparatively wide grain boundaries. The Bi₂O₃ phases correspond to continuously spreading intergranular layers, which separate the ZnO grains from each other. The width of the interanular layers in the narrow grain boundaries between two adjacent ZnO grains is less than 500 Å.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 17 (4), 673-677, 1978

  社団法人応用物理学会

詳細情報

• CRID: 1570009752470696960
• NII論文ID: 110003898700
• NII書誌ID: AA00690800
• ISSN: 00214922
• 本文言語コード: en
• データソース種別:
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