ACTIVITIES AND SOLUBILITIES OF FERROUS OXIDE IN MELTS FORMED DURING THE IMMOBILIZATION OF HIGH-LEVEL NUCLEAR WASTE

被引：0
|
作者：
IWASE, M [1 ]
YAMAMOTO, T [1 ]
KAWAMURA, K [1 ]
OHUCHI, H [1 ]
机构：
[1] POWER REACTOR & NUCL FUEL DEV CORP, TOKAI, IBARAKI 31911, JAPAN
来源：
GLASS TECHNOLOGY | 1994年 / 35卷 / 02期
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D O I：
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中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The solubility of ferrous oxide is suggested as a relative or semi-quantitative measure of oxygen anion activity in oxide melts. To support this proposal, experimental determinations of the activities and solubilites of FeO for melts consisting of glass frit PF798 and high level nuclear waste (HLW) at various HLW/glass ratios were conducted by employing an electrochemical technique incorporating zirconia as solid electrolyte. The solubilities of ferrous oxide increase with an increase in the HLW/glass ratio, conforming to a formula Fe(x)O(s) + (1 - x)Fe(s) = Fe2+ (glass) + O2- (glass) the dissolution of Fe(x)O results in the formation of oxygen anions, indicating that the melts under consideration are relatively acidic solutions.
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页码：77 / 82
页数：6
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