Thermal Expansion Anisotropy of Cordierite Crystal

被引：3

作者：

Yang, Daoyuan ^{[1
]}

Zhu, Kai ^{[1
]}

Wu, Juan ^{[1
]}

Wei, Guanghui ^{[1
]}

Liu, Jingwei ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China

来源：

APPLICATIONS OF ENGINEERING MATERIALS, PTS 1-4 | 2011年 / 287-290卷

关键词：

Cordierite crystal; High temperature X-ray diffract meter; Coefficient of thermal expansion; Anisotropy; Least squares technique;

D O I：

10.4028/www.scientific.net/AMR.287-290.201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cordierite material was prepared by talc, bauxite and kaolin, and the coefficient of thermal expansion (CTE) of cordierite crystals could be determined by high temperature X-ray diffractmeter: the volume and average liner CTE is 2.31 x 10(-5)degrees C-1 and 0.84 x 10(-5)degrees C-1 (200 degrees C -800 degrees C) respectively; With the temperature increasing, the CTE in a or b axis direction increases, and in c axis direction decreases rapidly below 400 degrees C then slowly, cordierite crystal is of obvious thermal expansion anisotropy. The orientation of crystal in sample is random, expansion and shrinkage partly counteract, so that the CTE of cordierite materials is low.

引用

页码：201 / 204

页数：4