Hydrothermal Synthesis of Ytterbium Silicate Nanoparticles

被引：55

作者：

Chen, Hongfei ^{[1
,2
]}

Gao, Yanfeng ^{[1
]}

Liu, Yun ^{[1
,2
]}

Luo, Hongjie ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

INORGANIC CHEMISTRY | 2010年 / 49卷 / 04期

关键词：

SOL-GEL SYNTHESIS; CORROSION; POWDERS; ENVIRONMENT; CERAMICS; LU2SI2O7; NITRIDE; PHASE;

D O I：

10.1021/ic9023585

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A simple, low-cost hydrothermal method was developed to synthesize 20-nm-diameter single-crystalline ytterbium silicate (Yb(2)Si(2)O(7) and Yb(2)SiO(5)) nanoparticles at 200 degrees C. This is nearly 1000 degrees C lower than that for the typical sol-gel route to ytterbium silicate powders. Obtained powders showed very low thermal conductivity, a suitable thermal expansion coefficient, and excellent thermal/structural stability, suggesting a potential application to environmental and thermal barrier coatings. Special focus was placed on assessing the hydrothermal reaction mechanism for particle formation.

引用

页码：1942 / 1946

页数：5

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