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Sintering Behavior of Nanocrystalline Zirconia Prepared by Chemical Vapor Synthesis
Author(s) -
Srdić Vladimir V.,
Winterer Markus,
Hahn Horst
Publication year - 2000
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.1151-2916.2000.tb01266.x
Subject(s) - nanocrystalline material , materials science , crystallite , ceramic , cubic zirconia , grain size , sintering , microstructure , crystallinity , particle size distribution , compaction , composite material , particle size , chemical engineering , mineralogy , metallurgy , nanotechnology , chemistry , engineering
Powder synthesis and ceramic processing methods have to be improved to take full advantages of new, improved properties of nanocrystalline ceramics. Sintered nanocrystalline ceramics of pure, undoped zirconia are formed from nanocrystalline powder of optimized quality obtained by the chemical vapor synthesis (CVS) method. The as‐synthesized CVS ZrO 2 powder is nonagglomerated with a crystallite size of about 5 nm, narrow size distribution, and high crystallinity. On uniaxial compaction a transparent green body of ultrafine, uniform microstructure and narrow pore size distribution corresponding to the grain size distribution is formed, which is sintered under vacuum at 950°C into a transparent, fully dense ZrO 2 ceramic with a grain size of 60 nm.