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Yttrium Silicate Powders Produced by the Sol–Gel Method, Structural and Thermal Characterization
Author(s) -
Boyer Damien,
Derby Brian
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.tb03520.x
Subject(s) - tetraethyl orthosilicate , yttrium , orthosilicate , materials science , calcination , sol gel , silicate , alkoxide , chemical engineering , mineralogy , thermal treatment , metallurgy , composite material , nanotechnology , oxide , chemistry , catalysis , biochemistry , engineering
Yttrium silicate (Y 2 SiO 5 ) powders of high purity have been synthesized using the sol–gel method. Alkoxide precursors were used with commercial tetraethyl orthosilicate as the silica source and yttrium propoxide synthesized from YCl 3 . Powders calcined from the xerogel showed submicrometer crystal sizes. These powders were sintered at temperatures <1300°C and are suitable for coating applications such as a thermal barrier system for SiC/SiC composites.