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Preparation of Nanocrystalline Calcia‐Stabilized Tetragonal Zirconia by High‐Energy Milling of Baddeleyite
Author(s) -
Zhigachev Andrey O.,
Umrikhin Alexey V.,
Golovin Yuriy I.,
Farber Boris Y.
Publication year - 2015
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12377
Subject(s) - nanocrystalline material , materials science , cubic zirconia , baddeleyite , tetragonal crystal system , crystallite , monoclinic crystal system , agglomerate , mechanosynthesis , phase (matter) , ceramic , chemical engineering , scanning electron microscope , sintering , mineralogy , metallurgy , crystallography , nanotechnology , composite material , crystal structure , ball mill , chemistry , paleontology , organic chemistry , engineering , biology , zircon
For the first time, zirconia nanocrystalline powders were derived using baddeleyite as raw material by ultrafine milling. Powders containing 19 vol% of monoclinic phase were produced by milling of baddeleyite with addition of 11 mol% of CaO. Crystallite size of tetragonal and cubic phases in resulting powders is 3–5 nm and about 15 nm in the case of monoclinic phase. Typical agglomerate's size found by scanning electron microscopy ranges from ~0.1 to 10 µm. Sintered ceramics with tetragonal zirconia content of 95 vol% and crystallite size of ~50 nm are produced from the powders.