Effect of TiO2 on Grain Refining of Amorphous Si3N4 and the Grain-refined Mechanism.
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- Kawai Chihiro
- Itami Research Laboratories, Sumitomo Electric Industries, Ltd.
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- Matsuura Takashi
- Itami Research Laboratories, Sumitomo Electric Industries, Ltd.
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- Park Jin-Joo
- Itami Research Laboratories, Sumitomo Electric Industries, Ltd.
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- Yoshimura Masashi
- Itami Research Laboratories, Sumitomo Electric Industries, Ltd.
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- Yamakawa Akira
- Itami Research Laboratories, Sumitomo Electric Industries, Ltd.
Bibliographic Information
- Other Title
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- アモルファス窒化ケイ素の微粒化に及ぼすTiO2添加効果とその微粒化機構
- アモルファス チッカ ケイソ ノ ビリュウカ ニ オヨボス TiO2 テンカ
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Abstract
Amorphous Si3N4/TiO2 compacted bodies were heated at 1490°C, for 1 to 10 hr under N2 pressures of 0.92 and 1000 atm, and the effect of N2 pressure on the resulting grain refining was investigated, to clarify the role of TiO2 in the grain-refined mechanism. Thermodynamic calculation performed prior to experiments indicated that high N2 pressure inhibited the formation of SiO gas and new formation of Si3N4 by its re-nitridation. Crystallized phases after heating were α-Si3N4, Si2N2O and TiN. Although both N2 pressures formed the fine grains having a diameter of about 30 nm, high pressure accelerated the grain refining and crystallization of amorphous Si3N4 to a-Si3N4. From these results, the fine grains were considered to be formed not through re-nitridation of SiO gas but through crystallization of amorphous Si3N4.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 44 (10), 963-969, 1997
Japan Society of Powder and Powder Metallurgy
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Details 詳細情報について
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- CRID
- 1390001206308892544
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- NII Article ID
- 10002261593
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 4324262
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed