Forming Mechanism of Dy2Ce2O7 Ceramic for Thermal Barrier Coatings

被引：1

作者：

Zhang Hongsong ^{[1
]}

Hu Renxi ^{[2
]}

Xu Qiang ^{[3
]}

机构：

[1] Henan Inst Engn, Dept Mech & Engn, Zhengzhou 450007, Peoples R China

[2] Ordnance Engn Coll, Dept Basic Courses, Shijiazhuang 050003, Peoples R China

[3] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

来源：

CHINESE CERAMICS COMMUNICATIONS | 2010年 / 105-106卷

关键词：

Cerium oxides; Solid Reaction; Forming mechanism;

D O I：

10.4028/www.scientific.net/AMR.105-106.383

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The forming mechanism of Dy2Ce2O7 prepared by solid reaction using CeO2 and Dy2O3 as reactants was analyzed by X-ray diffraction method. It is indicated that there is almost no solid solution reaction between Dy2O3 and CeO2 before 1300 degrees C, the Dy3+ cations enter the crystal lattice of CeO2 and substitute sites of Ce4+ cations in the range between 1300 degrees C and 1400 degrees C which resulted in the formation of Dy2O3-CeO2 solid solution. The Dy2O3-CeO2 solid solution transformed gradually into Dy2Ce2O7 after 1400 degrees C and pure Dy2Ce2O7 can be obtained at 1500 degrees C. No other intermediate phases were found in the whole process.

引用

页码：383 / +

页数：2

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