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J. Korean Ceram. Soc. > Volume 41(4); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(4): 297.
doi: https://doi.org/10.4191/kcers.2004.41.4.297
분무연소합성(SCS)법에 의한 나노크기 물라이트(3Al2O3.42SiO2) 콜로이드 제조
이상진, 전병세
경남대학교 신소재공학부
Nano-Sized Mullite(3Al2O3.42SiO2) Colloids Fabricated by Spray Combustion Synthesis (SCS) Technique
Sang-Jin Lee, Byung-Sei Jun
Division of Advanced Materials Engineering, Kyungnam University
Nano-sized mullite (3Al$_2$O$_3$$.$2SiO$_2$) colloids were prepared by use of the spray combustion method. For combustion reaction, Al(NO$_3$)$_3$$.$9$H_2O$, and CH$_{6}$N$_4$O were used as an oxidizer and a fuel respectively, and then colloidal silica was also added as 2SiO$_2$source for mullite. The temperature of the reaction chamber was kept at 80$0^{circ}C$ to initiate the ignition of droplets of the mixed precursors. For preventing droplet coagulation, the droplet number concentration was reduced using the metal screen filter, and the residence time of aerosol was kept at 2.5 seconds for laminar flow. The synthesized colloidal particles had an uniform spherical shape with 130 nanometer size and the crystalline phase showed the mullite with stoichiometry in the observations of XRD and TEM.
Key words: Nano-Sized, Mullite, Colloid, Spray Combustion Synthesis (SCS)
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