Sol-gel synthesis and coating of nanocrystalline Lu2Si2O7 on Si3N4 substrate

Jayaseelan DD.; Ueno S.; Ohji T.Kanzaki S.

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Sol-gel synthesis and coating of nanocrystalline Lu2Si2O7 on Si3N4 substrate

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In this present work, we report sol-gel synthesis of nanocrystalline alpha-Lu2Si2O7, a candidate rare-earth disilicate phase being used recently as environmental barrier coating (EBC) layer for Si3N4 ceramics in high temperature water vapor corrosion environment. The method consists of the reaction of Lu(NiO3)(3) and TEOS in the adequate molar ratio to form a complex gel composed by the two cations, Si and Lu, which yields the stoichiometric Lu2Si2O7 after calcining. Thermal history and phase identification of the synthesized phase were examined using TG-DTA and XRD analyses, respectively. High dense coating layer is obtained by pressureless sintering at relatively low temperature. (C) 2003 Elsevier B.V. All rights reserved. References: 13

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《Materials Chemistry and Physics》 |2004年第1期|192-195|共4页
作者
Jayaseelan DD.; Ueno S.; Ohji T.Kanzaki S.;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
High dense coating layer; Pressureless sintering; Sol-gel synthesis; Phase-relationships; Silicon-nitride; System; Si3n4-sio2-y2o3; Strength; Exposure;

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4. Flexible inverted polymer solar cells on polyethylene terephthalate substrate containing zinc oxide electron-collection-layer prepared by novel sol-gel method and low-temperature treatments [O] . Kuwabara, Takayuki, Nakashima, Tomoaki, Yamaguchi, Takahiro, 2012

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Sol-gel synthesis and coating of nanocrystalline Lu2Si2O7 on Si3N4 substrate

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