화학공학소재연구정보센터
Korean Journal of Materials Research, Vol.15, No.12, 818-823, December, 2005
수열처리에 의한 세리아가 코팅된 실리카 연마재의 제조 및 Oxide Film의 연마특성
Preparation of Ceria Coated Silica Abrasive by Hydrothermal Treatment and Polishing Rate on Oxide Film
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Sub-micron colloidal silica particles coated with nano-sized ceria were prepared by mixing of its silica and cerium salts hydrolysis, and modified by hydrothermal reaction. By using the slurries with and without hydrothermal modification containing above particles, oxide film coated on silicon wafer was polished. The modified slurries had higher polish rate due to increase of ceria fraction to silica through hydrothermal reaction. They revealed higher stability in wide range of pH [Math Processing Error] than ceria coated silica slurries without its modification.
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