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Characterization and Formation of Yttrium Disilicate Nanocrystalline Powders by EDTA –Citric Acid Complexing Process
Author(s) -
Wang Yong Hong,
Wang Zhong Shang,
Jiang Yan,
Wang Xu,
Cheng Ji Gui
Publication year - 2016
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.12551
Subject(s) - ethylenediaminetetraacetic acid , nanocrystalline material , materials science , yttrium , citric acid , thermogravimetry , differential thermal analysis , transmission electron microscopy , nuclear chemistry , microstructure , scanning electron microscope , fourier transform infrared spectroscopy , thermal decomposition , chemical engineering , analytical chemistry (journal) , mineralogy , chelation , diffraction , metallurgy , chemistry , nanotechnology , composite material , chromatography , organic chemistry , engineering , oxide , physics , optics
A new route for the synthesis of yttrium disilicate (mainly α‐Y 2 Si 2 O 7 ) powders was reported as ethylenediaminetetraacetic acid ( EDTA )–citric acid ( CA ) complexing process. The thermal decomposition, phase composition, and microstructure of sample were characterized by thermogravimetry–differential thermal analyses, X‐ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and field emission scanning microscopy, respectively. The EDTA – CA complexation mechanism was further discussed, and the selected condition to get nanocrystalline Y 2 Si 2 O 7 powders was the precursor with pH 9.38 and heat treatment at around 1050°C. The prepared powders were well crystallized with average crystalline size ca. 50 nm.