期刊
JOURNAL OF NUCLEAR MATERIALS
卷 500, 期 -, 页码 373-380出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2018.01.005
关键词
Iron phosphate glass; Waste form; Nuclear waste; Chemical durability; Collins-CLT waste
资金
- US Department of Energy [DE-SC0011906]
- U.S. Department of Energy (DOE) [DE-SC0011906] Funding Source: U.S. Department of Energy (DOE)
The effects of cooling rate on the chemical durability of iron phosphate waste forms containing up to 40 wt% of a high MoO3 Collins-CLT waste simulant were determined at 90 degrees C using the product consistency test (PCT). The waste form, designated 40wt%-5, meets appropriate Department of Energy (DOE) standards when rapidly quenched from the melt (as-cast) and after slow cooling following the CCC (canister centerline cooling)-protocol, although the quenched glass is more durable. The analysis of samples from the vapor hydration test (VHT) and the aqueous corrosion test (differential recession test) reveals that rare earth orthophosphate (monazite) and Zr-pyrophosphate crystals that form on cooling are more durable than the residual glass in the 40wt%-5 waste form. The residual glass in the CCC-treated samples has a greater average phosphate chain length and a lower Fe/P ratio, and those contribute to its faster corrosion kinetics. (C) 2018 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据