Phase evolution and chemical durability of co-doped Gd2Zr2O7 ceramics for nuclear waste forms

2015 ◽  
Vol 41 (5) ◽  
pp. 6344-6349 ◽  
Author(s):  
Xirui Lu ◽  
Long Fan ◽  
Xiaoyan Shu ◽  
Sijin Su ◽  
Yi Ding ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Phase Evolution ◽  
Chemical Durability ◽  
Waste Forms ◽  
Nuclear Waste Forms ◽  
Co Doped

Flux synthesis and chemical stability of Nd and Ce co-doped (Gd1−xNdx)2(Zr1−xCex)2O7 (0 ≤ x ≤ 1) pyrochlore ceramics for nuclear waste forms

2017 ◽  
Vol 43 (18) ◽  
pp. 17064-17070 ◽  
Author(s):  
Jin Wang ◽  
Junxia Wang ◽  
Yibing Zhang ◽  
Yuxiang Li ◽  
Yuancheng Teng ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Chemical Stability ◽  
Flux Synthesis ◽  
Waste Forms ◽  
Nuclear Waste Forms ◽  
Co Doped

Comparison of Glass and Crystalline Nuclear Waste Forms

1988 ◽  
Vol 127 ◽  
Author(s):  
W. Lutze ◽  
R. C. Ewing
Keyword(s):  
Mechanical Properties ◽  
Performance Assessment ◽  
Nuclear Waste ◽  
Single Phase ◽  
Chemical Durability ◽  
Borosilicate Glasses ◽  
Thermal And Mechanical Properties ◽  
Materials Properties ◽  
Waste Forms ◽  
Nuclear Waste Forms

ABSTRACTNuclear waste forms may be divided into two broad categories: (1) single phase glasses with minor crystalline components (e.g., borosilicate glasses) and (2) crystalline waste forms, either single phase (e.g., monazite) or polyphase (e.g., SYNROC). This paper reviews the materials properties data that are available for each of these two types of waste forms. The prinicipal data include: (1) physical, thermal and mechanical properties, (2) chemical durability; (3) radiation damage effects. Complete data are only available for borosilicate glasses and SYNROC; therefore, this comparison focuses on the performance assessment of borosilicate glass and SYNROC.

Rapid synthesis and chemical durability of Gd2Zr2-Ce O7 via SPS for nuclear waste forms

2018 ◽  
Vol 44 (16) ◽  
pp. 20306-20310 ◽  
Author(s):  
Shunzhang Chen ◽  
Xudong Liu ◽  
Xiaoyan Shu ◽  
Jingxian Yang ◽  
Lan Wang ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Chemical Durability ◽  
Rapid Synthesis ◽  
Waste Forms ◽  
Nuclear Waste Forms

scholarly journals Ab Initio Investigation of Helium Mobility in La2Zr2O7 Pyrochlore

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 667
Author(s):  
Yanxia Lu ◽  
Qing Peng ◽  
Chenguang Liu
Keyword(s):  
Nuclear Waste ◽  
Density Functional ◽  
Minimum Energy ◽  
Elastic Band ◽  
Waste Forms ◽  
Band Method ◽  
And Migration ◽  
High Level ◽  
Migration Pathways ◽  
Nuclear Waste Forms

The α-decay of incorporated actinides continuously produces helium, resulting in helium accumulation and causing security concerns for nuclear waste forms. The helium mobility is a key issue affecting the accumulation and kinetics of helium. The energy barriers and migration pathways of helium in a potential high-level nuclear waste forms, La2Zr2O7 pyrochlore, have been investigated in this work using the climbing image nudged elastic band method with density functional theory. The minimum energy pathway for helium to migrate in La2Zr2O7 is identified as via La–La interstitial sites with a barrier of 0.46 eV. This work may offer a theoretical foundation for further prospective studies of nuclear waste forms.

Using “radioparagenesis” to design robust nuclear waste forms

2010 ◽  
Vol 3 (1) ◽  
pp. 130-135 ◽  
Author(s):  
C. Jiang ◽  
B. P. Uberuaga ◽  
K. E. Sickafus ◽  
F. M. Nortier ◽  
J. J. Kitten ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Waste Forms ◽  
Nuclear Waste Forms

MCC-1: A Standard Leach Test for Nuclear Waste Forms

1982 ◽  
Vol 56 (2) ◽  
pp. 306-312 ◽  
Author(s):  
D.M. Strachan ◽  
R. P. Turcotte ◽  
B. O. Barnes
Keyword(s):  
Nuclear Waste ◽  
Waste Forms ◽  
Leach Test ◽  
Nuclear Waste Forms
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