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Preparation of Ultrafine Zirconia Particles
Author(s) -
Xie Yuqun
Publication year - 1999
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.1151-2916.1999.tb01832.x
Subject(s) - cubic zirconia , monoclinic crystal system , calcination , materials science , chemical engineering , ultrafine particle , sol gel , particle size , aqueous solution , particle (ecology) , specific surface area , mineralogy , nanotechnology , crystallography , composite material , ceramic , crystal structure , chemistry , organic chemistry , catalysis , oceanography , geology , engineering
Ultrafine ZrO 2 particles have been prepared via a new sol‐gel process. This process involves the addition of excess C 2 H 4 O into the aqueous ZrOCl 2 solution and reacting the mixture at room temperature; a glassy ZrO(OH) 2 gel is formed moments later. An ultrafine ZrO 2 powder is obtained after the gel is dried and calcined; the powder is monoclinic. The average particle size is ∼12 nm, and its specific surface area is 55.1 m 2 /g. In addition, partially stabilized ZrO 2 can be prepared in the same manner, yielding a good result.