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Effects of Molar Ratio of Acetylacetone to Aluminum Precursor on the Yttrium Aluminum Garnet (Y 3 Al 5 O 12 , YAG ) Formation by a Sol–Gel Process
Author(s) -
Ho YungShou,
Wu ChengHeng,
Chen YiSiou,
Liu ChihKun
Publication year - 2014
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.12221
Subject(s) - acetylacetone , materials science , yttrium , crystallization , aluminium , molar ratio , crystallite , sol gel , fourier transform infrared spectroscopy , chelation , nuclear chemistry , inorganic chemistry , metallurgy , chemical engineering , nanotechnology , chemistry , organic chemistry , catalysis , engineering , oxide
In this study, effects of the molar ratio of acetylacetone to aluminum precursor on crystallization and morphology of yttrium aluminum garnet ( YAG ) were investigated. YAG nanopowders were synthesized by a sol–gel process incorporating different amounts of acetylacetone as a chelating agent and fuels. The dry gels and powders were characterized using FTIR , SDT , XRD , and FESEM . The results showed the lowest YAG crystallization temperature at 800°C when the ratio of acetylacetone/aluminum precursor was two. This is 150°C lower than that without acetylacetone. The crystallite size of YAG powders was about the same, around 20–30 nm.