THE SURFACE VISCOSITIES AND THE FOAMINES OF MOLTEN OXIDES

被引：18

作者：

HARA, S ^{[1
]}

KITAMURA, M ^{[1
]}

OGINO, K ^{[1
]}

机构：

[1] OSAKA UNIV,GRAD SCH,SUITA,OSAKA 565,JAPAN

来源：

ISIJ INTERNATIONAL | 1990年 / 30卷 / 09期

关键词：

borate; foaming; melt; phosphate; silicate; surface viscosity;

D O I：

10.2355/isijinternational.30.714

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Viscosities of melts in the systems, Na2O-P2O5, BaO-B2O3, Na2O-B2O3 and Na2O-SiO2 were measured at 1000°C on the surface as well as in the bulk phase by using a modified rotating viscometer. For some melts, it was found that the viscosity on the surface is higher than that in the bulk phase. The highly viscous layer on the surface suggests that concentration of surface active component such as B203 in the system BaO-B2O3 is higher on the surface than in the bulk phase. Foaminess of the melts was also measured. It is concluded that higher viscosity of the melt itself is important, but not enough to stabilize the foam, and higher surface tension depression by the melt composition is also required. © 1990, The Iron and Steel Institute of Japan. All rights reserved.

引用

页码：714 / 721

页数：8

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