Premium
Single‐Calcination Synthesis of Pyrochlore Free Pb(Mg 1/3 Nb 2/3 )O 3 Powders Using Particle‐Coating Method
Author(s) -
Xu Zhijun,
Chu Ruiqing,
Hao Jigong,
Zhang Yanjie,
Li Guorong,
Yin Qingrui,
Ding Aili
Publication year - 2010
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.1551-2916.2009.03368.x
Subject(s) - pyrochlore , calcination , materials science , particle size , coating , citric acid , chemical engineering , mineralogy , sol gel , ball mill , phase (matter) , metallurgy , nuclear chemistry , nanotechnology , chemistry , catalysis , biochemistry , organic chemistry , engineering
Using two‐step particle‐coating method, pyrochlore‐free Pb(Mg 1/3 Nb 2/3 )O 3 (PMN) powders have been successfully synthesized by a single calcination step at a relatively lower calcined temperature of 850°C. The XRD and EDS results confirmed that the Mg–citric acid polymeric complex coatings effectively prevent direct contact between PbO and Nb 2 O 5 and thus avoid the formation of pyrochlore phase. The coated powders were calcined directly without the ball‐milling procedure at 850°C. The pyrochlore‐free PMN powders obtained showed uniform and even grain size. The results showed that this method is an attractive method for the synthesis of PMN‐based composite powders.