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Control of Reaction Pathways for Rapid Synthesis of Negative Thermal Expansion Ceramic Zr 2 P 2 WO 12 with Uniform Microstructure
Author(s) -
Liu Xiansheng,
Wang Junqiao,
Fan Chunzhen,
Shang Rui,
Cheng Fuxing,
Yuan Baohe,
Song Wenbo,
Chen Yongguang,
Liang Erjun,
Chao Mingju
Publication year - 2013
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.12201
Subject(s) - materials science , sintering , microstructure , ceramic , thermal expansion , phase (matter) , chemical engineering , grain size , composite material , organic chemistry , chemistry , engineering
The reaction pathways to synthesize Zr 2 P 2 WO 12 ( ZPW ) from ZrO 2 , WO 3 , and P 2 O 5 are studied. It is found that there exist two different reaction pathways: One is direct reaction, while another is through an intermediate phase ZrP 2 O 7 . The reaction pathways are determined by drying and sintering temperatures. By controlling the reaction pathways, namely avoiding the intermediate phase, negative thermal expansion ceramic ZPW can be synthesized within several minutes. Besides, as‐synthesized specimens possess much smaller and uniform grain size distribution than those synthesized by conventional methods. The investigation paves a way toward rapid and environmental friendly synthesis of ZPW and related compounds.