Synthesis of Ca-Alpha SiAlON by Carbothermal Reduction-Nitridation of CaO-Al<SUB>2</SUB>O<SUB>3</SUB>-SiO<SUB>2</SUB> Glass
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- HOTTA Mikinori
- Kyushu University, JAPAN
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- TATAMI Junichi
- Yokohama National University, JAPAN
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- KOMEYA Katsutoshi
- Yokohama National University, JAPAN
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- MEGURO Takeshi
- Yokohama National University, JAPAN
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- MORINAGA Kenji
- Kyushu University, JAPAN
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- MASUDA Hirohisa
- Ferro Enamels (Japan) Limited, JAPAN
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- UEHARA Masato
- Kyushu University, JAPAN
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- ENOMOTO Naoya
- Kyushu University, JAPAN
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- HOJO Junichi
- Kyushu University, JAPAN
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- CHENG Yi-Bing
- Monash University, AUSTRALIA
説明
Ca-α sialon powders were synthesized via carbothermal reduction-nitridation (CRN) of CaO-Al2O3-SiO2 glass powder.Ca-α sialon content of about 80wt%, together with β-sialon and AlN as a minor phase was obtained by firing the product at 1450oC for 2h in N2 gas.SEM observation showed that the resultant powder had ball-like morphology of less than 5μm.According to XRD analysis, crystalline SiO2, mullite and Si2N2O as an intermediate phase were identified at the initial stage of the CRN reaction.The glass powder composed of coarse particle gradually changed into the spherical particles at 1100oC.The nitridation reaction proceeded from the surface of the spherical particles to generate Si2N2O.It was confirmed that the Ca-α sialon particles obtained from CaO-Al2O3-SiO2 glass powder were formed through the same process as CaO-Al2O3-SiO2 powder mixture.This result suggests that the Ca-α sialon synthesized by CRN of CaO-Al2O3-SiO2 system were formed through Ca-Al-Si-O glass.
収録刊行物
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- 日本セラミックス協会 年会・秋季シンポジウム 講演予稿集
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日本セラミックス協会 年会・秋季シンポジウム 講演予稿集 2003F (0), 299-299, 2003
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390001205612616960
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- NII論文ID
- 130006968653
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可