アルミナ粉末のチタニアコーティング

• 高橋 康隆

  岐阜大学工学部工業化学科

• 知崎 潤二

  岐阜大学工学部工業化学科

書誌事項

タイトル別名

• Titania Coating of Alumina Powders
• アルミナ フンマツ ノ チタニア コーティング

抄録

TiO₂ deposition on alumina powders by the hydrolysis of titanium isopropoxide (TIP) was investigated as a model experiment of the uniform addition of a sintering aid. The rate of hydrolysis increased with increasing TIP/Al₂O₃ and H₂O/TIP molar ratios, and titania deposition occurred effectively at the H₂O/TIP ratio larger than 10. Examination of the coated powders by SEM, TEM, BET surface area measurement and electrophoresis showed that fine titania deposits adhered loosely to the alumina particles before calcination, but that after calcination at 500°C the deposits spread over the surface of the alumina particles, resulting in the tight coating. The hydrolysis reaction was accelerated by the addition of diethylamine (DEA); however the titania powders had a tendency to deposit separately from the alumina particles.

収録刊行物

• Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)

  Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) 96 (1111), 240-246, 1988

  公益社団法人 日本セラミックス協会

キーワード

• Alkoxide
• Titania
• Alumina
• Powder coating

詳細情報

• CRID: 1390282680255056768
• NII論文ID: 110002290746
• NII書誌ID: AN10040326
• DOI: 10.2109/jcersj.96.240
• ISSN: 18821022
• ISSN: 09145400
• NDL書誌ID: 3169200
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3169200
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1988/96/1111/96_1111_240/_pdf
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