Corrosion of K-3 glass-contact refractory in sodium-rich aluminosilicate melts

被引：4

作者：

Lu, XD ^{[1
]}

Gan, H ^{[1
]}

Buechele, AC ^{[1
]}

Pegg, IL ^{[1
]}

机构：

[1] Catholic Univ Amer, Vitreous State Lab, Washington, DC 20064 USA

来源：

SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXII | 1999年 / 556卷

关键词：

D O I：

10.1557/PROC-556-279

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The corrosion of the glass-contact refractory Monofrax K-3 in two sodium-rich aluminosilicate melts has been studied at 1208 and 1283 degrees C using a modified ASTM procedure with constant agitation of the melt by air bubbling. The results for the monolithic refractory indicate a fast initial stage involving phase dissolution and transformation and a later "passivated" stage in which the surface of the refractory has been substantially modified. The composition of the stable spinel phase in the altered layer on monolithic coupons of K-3 is almost identical to the equilibrium composition bracketed by the dissolution of powdered K-3 into under-saturated melts on the one hand, and by crystallization of spinels from supersaturated melts on the other. The temperature and melt shear viscosity were found to have significant effects on the rates of K-3 dissolution and transformation.

引用

页码：279 / 286

页数：4