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Nonisothermal Synthesis of Yttria‐Stabilized Zirconia Nanopowder through Oxalate Processing: II, Morphology Manipulation
Author(s) -
Vasylkiv Oleg,
Sakka Yoshio,
Borodians'ka Hanna
Publication year - 2001
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.1151-2916.2001.tb01040.x
Subject(s) - materials science , yttria stabilized zirconia , cubic zirconia , calcination , yttrium , crystallite , chemical engineering , oxalate , zirconium , crystallization , tetragonal crystal system , decomposition , precipitation , morphology (biology) , mineralogy , metallurgy , ceramic , crystal structure , inorganic chemistry , crystallography , chemistry , oxide , biochemistry , physics , organic chemistry , meteorology , engineering , catalysis , biology , genetics
A novel, nontraditional route for controlling the morphology of yttria‐stabilized zirconia nanopowders is explained. For understanding the real nature of yttrium zirconium oxalate nonisothermal decomposition and for the development of nanosize 3 mol% Y 2 O 3 ·97mol% ZrO 2 , mass spectrometry, X‐ray, and TEM investigation were used. Characteristics of zirconia crystallization under nonisothermal heating conditions were studied. Morphology evolution during Y‐Zr oxalate nonisothermal decomposition was investigated to optimize the heating schedule of calcination. The nonlinear heating regime has been used to produce nanosized Y 2 O 3 ‐stabilized tetragonal ZrO 2 powder with the finest primary crystallites and narrowest secondary aggregate size distribution.