核化学与放射化学Issue(5)：317-320,4.DOI:10.7538/hhx.2014.36.05.0317
模拟高放玻璃固化体的析晶行为
Crystallization of the Simulated HLW Glass
杨永刚 1张振涛 1华小辉 1王雷1
作者信息
- 1. 中国原子能科学研究院 放射化学研究所，北京 102413
- 折叠
摘要
Abstract
In the production process of high-level waste(HLW)glass,there was crystalline phase in the centre area of the HLW glass tanks,due to high temperature.Crystallization increases phase interface of HLW glass,having an effect on the physical and chemical prop-erties of HLW glass.In order to avoid the occurrence of crystallization,it’s necessary to study the crystallization behavior of HLW glass.Crystallization behaviors of the simulated HLW glass were researched by the isothermal heat treatment in this paper.The simulated HLW glass powders were respectively heated at 500,600,700,800,900 ℃ in the range from 0.5 h to 9 6 h.After heat treatment,the crystallinity and crystallinity phase of samples were detected by X-ray diffraction (XRD).The results of XRD show that the maximum degree of crystallinity of the simulated HLW glass appears at about 700℃.After isothermal heat treatment,there are three different crystals:omphacie,cerianite and albite.Omphacite is the major crystalline phase,which has always existed in the range from 600 ℃ to 900 ℃. Cerianite always precipitates in the range from 700 ℃ to 900 ℃.Albite only precipitates at 700 ℃.关键词
模拟高放玻璃固化体/恒温热处理/析晶行为/地质处置Key words
simulated HLW glass/isothermal heat treatment/crystallization/geological disposal分类
数理科学引用本文复制引用
杨永刚,张振涛,华小辉,王雷..模拟高放玻璃固化体的析晶行为[J].核化学与放射化学,2014,(5):317-320,4.
