钡硼硅酸盐玻璃和玻璃陶瓷固化体的抗浸出性能比较研究
|
摘要
利用产品一致性试验(PCT)法研究了钙钛锆石-钡硼硅酸盐玻璃陶瓷固化体的抗浸出性能,并与不含晶相的钡硼硅酸盐玻璃固化体进行比较。结果表明,玻璃陶瓷和玻璃固化体中B、Na和Nd元素的归一化浸出率随浸泡时间增加均呈现降低的趋势,均在28 d后趋于平稳,在含有条状钙钛锆石晶体和块状榍石晶体的玻璃陶瓷固化体中,B、Na和Nd元素的归一化浸出率在28天后分别为8.4×10-3 g m-2d-1、7.8×10-3g m-2d-1、7.5×10-6g m-2d-1,均比钡硼硅酸盐玻璃固化体的浸出率低一个数量级。
The leaching properties of zirconolite–barium borosilicate glass-ceramics were mainly evaluated by Product Consistency Test(PCT),and the leaching properties of barium borosilicate glass without any crystalline phase were compared. The results show that the normalized leaching rates of B, Na, and Nd gradually decrease with increasing leaching time and remain almost unchanged after 28 days. The normalized leaching rates of B, Na and Nd in zirconolite-based glass-ceramic are about 8.4×10-3g m-2d-1, 7.8×10-3g m-2d-1, and 7.5×10-6g m-2d-1after 28 d, respectively, which are one order of magnitude lower than that of barium borosilicate glass.
The leaching properties of zirconolite–barium borosilicate glass-ceramics were mainly evaluated by Product Consistency Test(PCT),and the leaching properties of barium borosilicate glass without any crystalline phase were compared. The results show that the normalized leaching rates of B, Na, and Nd gradually decrease with increasing leaching time and remain almost unchanged after 28 days. The normalized leaching rates of B, Na and Nd in zirconolite-based glass-ceramic are about 8.4×10-3g m-2d-1, 7.8×10-3g m-2d-1, and 7.5×10-6g m-2d-1after 28 d, respectively, which are one order of magnitude lower than that of barium borosilicate glass.
引文
[1]柳伟平,高振,范承蓉,等.法国高放废液玻璃固化技术最新进展[J].辐射防护,2014,36(6):404-406.
[2]罗上庚.玻璃固化国际现状及发展前景[J].硅酸盐通报,2003,22(1):42-48.
[3]徐东,吴浪,李会东,等.钙钛锆石-钡硼硅酸盐玻璃陶瓷的制备及表征[J].硅酸盐学报,2015,01:127-132.
[4]JANTZEN C M,BIBLER N E,BEAM D C,et al.C1285-14 Standard test methods for determining chemical durability of nuclear,hazardous,and mixed waste glasses andmultiphase glass ceramics:The product consistency test(PCT)[S].US:ASTM,2014.
[5]Li H D,Wu L,Xu D,et.al.Structure and chemical durability of barium borosilicate glass-ceramics containing zirconolite and titanite crystalline phases[J].J Nucl Mater,2015,466:484-490.
[6]CRAWFORD C L,MARRA J C,BIBLER N E.Glass fabrication and product consistency testing of lanthanide borosilicate glass for plutonium disposition[J].J.Alloy.compd,2007,444-445(1):569-579.
[7]MARTIN C,RIBET I,FRUGIER P,et al.Alteration kinetics of the glass-ceramic zirconolite and role of the alteration film:Comparison with the SON68 glass[J].J Nucl Mater,2007,366(1-2):277-287.
[2]罗上庚.玻璃固化国际现状及发展前景[J].硅酸盐通报,2003,22(1):42-48.
[3]徐东,吴浪,李会东,等.钙钛锆石-钡硼硅酸盐玻璃陶瓷的制备及表征[J].硅酸盐学报,2015,01:127-132.
[4]JANTZEN C M,BIBLER N E,BEAM D C,et al.C1285-14 Standard test methods for determining chemical durability of nuclear,hazardous,and mixed waste glasses andmultiphase glass ceramics:The product consistency test(PCT)[S].US:ASTM,2014.
[5]Li H D,Wu L,Xu D,et.al.Structure and chemical durability of barium borosilicate glass-ceramics containing zirconolite and titanite crystalline phases[J].J Nucl Mater,2015,466:484-490.
[6]CRAWFORD C L,MARRA J C,BIBLER N E.Glass fabrication and product consistency testing of lanthanide borosilicate glass for plutonium disposition[J].J.Alloy.compd,2007,444-445(1):569-579.
[7]MARTIN C,RIBET I,FRUGIER P,et al.Alteration kinetics of the glass-ceramic zirconolite and role of the alteration film:Comparison with the SON68 glass[J].J Nucl Mater,2007,366(1-2):277-287.