Effects of KC1 flux on the morphology, anion composition, and chromaticity of perovskite oxynitrides, CaTaO2N, SrTaO2N, and LaTaON2

Title
Effects of KC1 flux on the morphology, anion composition, and chromaticity of perovskite oxynitrides, CaTaO2N, SrTaO2N, and LaTaON2
Author(s)
김영일
Keywords
TANTALUM OXYNITRIDES; CA; SR; BA
Issue Date
201405
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v.40, no.4, pp.5275 - 5281
Abstract
Flux additives are known to expedite thermal ionic diffusion in the solid state, thereby lowering the activation barriers to ceramic synthesis and sintering. This paper reports the additional effects of flux, which is relevant to delicate color control of tantalum oxynitride pigments. Perovskites, CaTaO2N, SrTaO2N and LaTaON2, are potential inorganic pigments for yellow, orange and brick-red colors, respectively. The chromaticity of the above oxynitride is enhanced significantly using flux KCl in a thermal ammonolytic preparation. Such a variation of pigment color was correlated with the concentration of microstructural and compositional defects based on diffuse-reflectance absorbance spectroscopy, scanning electron microscopy, N-2 adsorption-desorption, and combustion analysis. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/32176http://dx.doi.org/10.1016/j.ceramint.2013.10.100
ISSN
0272-8842
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이과대학 > 화학생화학부 > Articles
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