VISCOSITY AND DENSITY-MEASUREMENTS OF MOLTEN LITHIUM-NIOBATE

被引：20

作者：

IKEDA, JAS ^{[1
]}

FRATELLO, VJ ^{[1
]}

BRANDLE, CD ^{[1
]}

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

JOURNAL OF CRYSTAL GROWTH | 1988年 / 92卷 / 1-2期

关键词：

Crystals--Growing - Lithium Compounds--Density Measurement - Nitrogen - Oxygen;

D O I：

10.1016/0022-0248(88)90459-9

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The viscosity and density of a congruently melting lithium niobate liquid were measured from 1270 to 1370°C. The viscosity displayed an Arrhenius behavior with an activation energy of 23.8 to 41.5 kJ/mol, depending on the shear rate. The liquid showed non-Newtonian behavior with viscosity increasing with shear rate. The results were not influenced by changing the atmosphere from air to pure oxygen or pure nitrogen. The viscosity data at 1270°C range from 19 to 34 cP, again depending on the shear rate. The density of the liquid was approximately 3.63 g/cm3 in this temperature range with a thermal expansion of 2.0×10-4/°C.

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页码：271 / 275

页数：5

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