ROOM-TEMPERATURE DENSIFICATION OF ALPHA-SIO2 VERSUS PRESSURE

被引：93

作者：

POLIAN, A ^{[1
]}

GRIMSDITCH, M ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.41.6086

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using Brillouin scattering, we have investigated the room-temperature densification of hydrostatically compressed a-SiO2. Irreversible densification occurs in the range 1025 GPa; at higher pressures (2540 GPa) no further densification is observed. The densified state is found to be metastable and decreases in density over time spans of the order of years. The presence of large uniaxial stresses during compression is found to lead to a densified state which relaxes much more rapidly ( hours) towards the undensified state. © 1990 The American Physical Society.

引用

页码：6086 / 6087

页数：2

共 24 条

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