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Zirconium–Hafnium Interdiffusion in Polycrystalline Fluorite‐Cubic CeO 2 ─ZrO 2 ─HfO 2 Solid Solution
Author(s) -
Sakka Yoshio,
Oishi Yasumichi,
Ando Ken,
Ikeda Yoji
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb03772.x
Subject(s) - fluorite , solid solution , crystallite , zirconium , grain boundary , materials science , hafnium , analytical chemistry (journal) , grain boundary diffusion coefficient , thermal diffusivity , lattice (music) , mineralogy , chemistry , metallurgy , thermodynamics , microstructure , physics , chromatography , acoustics
Zr–Hf interdiffusion was studied in the temperature range of 1650° to 1850°C in air for polycrystalline fluorite‐cubic systems of 90CeO 2 ·10(Zr 1‐ x Hf x )O 2 and 60CeO 2 ·40(Zr 1‐ x Hf x )O 2 . Lattice and grain‐boundary diffusion parameters were calculated from the Zr–Hf concentration distributions by using the grain‐boundary diffusion equation of Oishi and Ichimura. The cation iattice diffusivity was close to that in the fluorite‐cubic Y 2 O 2 ‐ZrO 2 solid solution.