TY - JOUR
T1 - Chemical durability of multicomponent lanthanide zirconate solid solutions
AU - Bryce, Keith
AU - Yang, Kun
AU - Yao, Tiankai
AU - Lian, Jie
N1 - Funding Information:
The synthesis of the multicomponent zirconate fluorites was supported by NSF under the Award DMREF-2119423 . The dissolution testing of the multicomponent pyrochlore solid solution was supported as part of the Center for Performance and Design of Nuclear Waste Forms and Containers (WastePD), an Energy Frontier Research Center (EFRC) funded by the U.S. Department of Energy , Office of Science , Basic Energy Sciences under Award DE-SC0016584 . The TEM characterization work was supported through the INL Laboratory Directed Research & Development (LDRD) Program under DOE Idaho Operations Office Contract DE-AC07-05ID14517 .
Publisher Copyright:
© 2023 Elsevier Ltd and Techna Group S.r.l.
PY - 2023/12/1
Y1 - 2023/12/1
N2 - Multicomponent zirconate solid solutions A2Zr2O7 (A= (Sm,Yb), (Sm,Yb,Gd), (Sm,Yb,Gd,Er), and (Sm,Yb,Gd,Er,Dy)) were synthesized through spark plasma sintering and their chemical durability was investigated via semi-dynamic leaching tests in pH = 1 nitric acid at 90 °C. Incongruent dissolution occurred for all samples with the preferential elemental release of zirconium in all A2Zr2O7 except for high entropy (Sm,Yb,Gd,Er,Dy)Zr2O7 which displays a congruent release of the A-site elements and Zr. A strong positive correlation was found between the lanthanide elemental release rates and the A-site cation size disorder, whereas a negative correlation was observed between the elemental release rates and mixing entropy.
AB - Multicomponent zirconate solid solutions A2Zr2O7 (A= (Sm,Yb), (Sm,Yb,Gd), (Sm,Yb,Gd,Er), and (Sm,Yb,Gd,Er,Dy)) were synthesized through spark plasma sintering and their chemical durability was investigated via semi-dynamic leaching tests in pH = 1 nitric acid at 90 °C. Incongruent dissolution occurred for all samples with the preferential elemental release of zirconium in all A2Zr2O7 except for high entropy (Sm,Yb,Gd,Er,Dy)Zr2O7 which displays a congruent release of the A-site elements and Zr. A strong positive correlation was found between the lanthanide elemental release rates and the A-site cation size disorder, whereas a negative correlation was observed between the elemental release rates and mixing entropy.
UR - http://www.scopus.com/inward/record.url?scp=85172902805&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/ca5702da-9dbf-3e53-9843-fcdee5f56cc2/
U2 - 10.1016/j.ceramint.2023.09.263
DO - 10.1016/j.ceramint.2023.09.263
M3 - Article
AN - SCOPUS:85172902805
SN - 0272-8842
VL - 49
SP - 39196
EP - 39204
JO - Ceramics International
JF - Ceramics International
IS - 23
ER -