Chemical durability of multicomponent lanthanide zirconate solid solutions

Bryce, Keith; Yang, Kun; Yao, Tiankai; Lian, Jie

doi:10.1016/j.ceramint.2023.09.263

Title: Chemical durability of multicomponent lanthanide zirconate solid solutions

Journal Article · 27 September 2023 · Ceramics International

DOI: https://doi.org/10.1016/j.ceramint.2023.09.263 · OSTI ID:2283648

^[1]; Yang, Kun ^[1]; Yao, Tiankai ^[2]; Lian, Jie ^[1]

Rensselaer Polytechnic Inst., Troy, NY (United States)
Idaho National Laboratory (INL), Idaho Falls, ID (United States)

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.

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Research Organization:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC07-05ID14517; SC0016584

OSTI ID:: 2283648

Alternate ID(s):: OSTI ID: 2203137

Report Number(s):: INL/JOU-23-73193-Rev000

Journal Information:: Ceramics International, Journal Name: Ceramics International Journal Issue: 23 Vol. 49; ISSN 0272-8842

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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