MOBILITY CONTROL OF CERAMIC GRAIN-BOUNDARIES AND INTERFACES

被引：51

作者：

CHEN, IW

机构：

[1] Department of Materials Science and Engineering, University of Michigan, Ann Arbor

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1993年 / 166卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(93)90309-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Grain boundary mobility and grain-liquid boundary mobility in ceramics vary vastly from material to material. Their characteristics are sensitive to the crystal structure, the nature of bonding, orientation. stoichiometry and composition. More directly, mobility can be lowered by decreasing the interfacial energy and anisotropy or increasing solute drag, liquid viscosity, particle pinning and grain interlocking. Judicious doping and scavenging emerge as especially effective methods for mobility control. Static and dynamic grain growth data of zirconia, alumina, and silicon nitride are cited to support the above proposition.

引用

页码：51 / 58

页数：8

共 44 条

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