BULK MODULUS AND YOUNGS MODULUS OF NANOCRYSTALLINE GAMMA-ALUMINA

被引：69

作者：

GALLAS, MR ^{[1
]}

PIERMARINI, GJ ^{[1
]}

机构：

[1] UNIV FED RIO GRANDE SUL,INST FIS,PORTO ALEGRE,RS,BRAZIL

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1994年 / 77卷 / 11期

关键词：

D O I：

10.1111/j.1151-2916.1994.tb04524.x

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：

Compression measurements mere performed for the first time on nanocrystalline gamma-alumina utilizing a diamond anvil cell (DAC) and the energy dispersive X-ray diffraction method. The cubic unit cell (a = 0.7924 nm) for gamma-alumina Tvas found to have a volume compression of about 2.4% over the pressure range from ambient to 3.8 GPa at room temperature under both hydrostatic and nonhydrostatic conditions. Using the first-order Bridgman equation and the Birch equation of state, the isothermal bulk modulus (B-0) mas determined to be 162 +/- 14 GPa and Young's modulus (E) was estimated to be 253 +/- 22 GPa assuming a Poisson's ratio for gamma-alumina of 0.24 +/- 0.2.

引用

页码：2917 / 2920

页数：4

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