The fracture energy of brittle crystals

被引：5
|
作者：
Freiman, S. W. [1 ]
Mecholsky, J. J., Jr. [2 ]
机构：
[1] Freiman Consulting, Potomac, MD 20854 USA
[2] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA
来源：
JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 15期
关键词：
CLEAVAGE SURFACE ENERGY; CRACK-PROPAGATION; TOUGHNESS; MINERALS; SILICON; MGO;
D O I：
10.1007/s10853-010-4491-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An expression is derived for the fracture energy, gamma, in brittle crystals, namely, gamma = kd(0)E, d(0) being the lattice spacing, E Young's modulus perpendicular to the fracture plane, and k is a constant. The value of gamma obtained through this expression is compared to experimental data for cubic crystals. Despite the fit, we conclude that because the fracture energy is dominated by the elastic constant, comparisons between a computed gamma and experimental data cannot be used to distinguish between bonding functions.
引用
收藏
页码：4063 / 4066
页数：4
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