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Synthesis of Niobium(V)‐Stabilized Tetragonal Zirconia Nanocrystalline Powders
Author(s) -
Ray Jagadish C.,
Panda Asit B.,
Saha Chitta R.,
Pramanik Panchanan
Publication year - 2003
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.1151-2916.2003.tb03331.x
Subject(s) - materials science , nanocrystalline material , cubic zirconia , tetragonal crystal system , niobium , dopant , zirconium , chemical engineering , oxalate , thermal stability , phase (matter) , inorganic chemistry , metallurgy , ceramic , doping , nanotechnology , organic chemistry , chemistry , optoelectronics , engineering
The polymer precursor method is very useful to prepare Nb 5+ ‐stabilized nanocrystalline powders of t ‐ZrO 2 . The precursor solution is composed of zirconium oxalate, niobium tartrate, and poly(vinyl alcohol), which help to form a network matrix to disperse the metal ions homogeneously. Nb 5+ is an effective agent to stabilize t ‐ZrO 2 , and ease of formation of the tetragonal phase increases with increasing dopant concentration. Thermal stability of t ‐phase is found up to 1700°C having 15 mol% Nb 5+ , prepared at 600°C with particle sizes of 35 ± 5 nm.