Simultaneous measurement of specific heat, thermal conductivity, and thermal diffusivity of modified barium titanate ceramics

被引：8

作者：

Morimoto, K ^{[1
]}

Sawai, S

Hisano, K

Yamamoto, T

机构：

[1] Natl Def Acad, Dept Appl Phys, Yokosuka, Kanagawa 2398686, Japan

[2] Natl Def Acad, Dept Commun Engn, Yokosuka, Kanagawa 2398686, Japan

来源：

THERMOCHIMICA ACTA | 2006年 / 442卷 / 1-2期

关键词：

barium titanate system; ceramic; thermophysical properties; radiation calorimetry;

D O I：

10.1016/j.tca.2005.11.020

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A radiation calorimeter makes it possible to measure the specific heat, thermal conductivity, and thermal diffusivity of a solid sample simultaneously and independently. Because the three thermal quantities are not independent each other, a self-check of the reliability of the obtained values can also be made from results. Measurements were performed for ferroclectric BaTiO3 ceramics modified with a small amount of Zr, Sn, and Hf in the temperature range of 300-450 K. The modifier content was changed from 2.5 to 12 mol% of Ti ion. Results indicate that the temperature dependence of thermal conductivity changes from crystalline-like to amorphous-like with an increase of content. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：14 / 17

页数：4

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