Structure, Properties, and Formation Models of Optical Ceramics

被引：10

作者：

Akchurin, M. Sh. ^{[1
]}

Gainutdinov, R. V. ^{[1
]}

Zakalyukin, R. M. ^{[1
]}

Kaminskii, A. A. ^{[1
]}

机构：

[1] Russian Acad Sci, AV Shubnikov Crystallog Inst, Moscow, Russia

来源：

JOURNAL OF SURFACE INVESTIGATION-X-RAY SYNCHROTRON AND NEUTRON TECHNIQUES | 2008年 / 2卷 / 05期

关键词：

D O I：

10.1134/S1027451008050091

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The structure, properties, and formation mechanisms of Y(3)Al(5)O(12), Y(2)O(3), and Lu(2)O(3) laser ceramics are investigated. Their microhardness and fracture toughness are determined. It is shown that the change in mechanical properties is related both to the grain size and grain boundary structure. Processes of plastic deformation of crystals by mechanical twinning are considered. Mechanisms of formation and motion of twins in crystals with FCC structure are determined. It is shown that the realization of similar mechanisms in crystals with HCP structure results in the phase transformations. Models of the formation and motion of twin boundaries are proposed which result in pore healing when preparing monolithic samples of highly transparent ceramics.

引用

页码：716 / 721

页数：6

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