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Comparative study on SrAl2O4 formation using different approaches
DOI:10.1016/j.ceramint.2022.01.205.png)
摘要
En 中文
A comparative study on SrAl2O4 synthesis via solid-state reaction and combustion synthesis was performed, based on thermodynamic calculations and resulted sample characteristics. We proposed a first-time approach of the combustion synthesis using metal perchlorates and a fuel mixture of urea and glycine. The calculated adiabatic temperature of the combustion reaction was 2807 ? and the standard enthalpy of reaction was - 6093 kJ/mol SrAl2O4. The recorded temperature during the highly exothermic combustion reaction was 1757 ?. The solid-state reaction was endothermic, with a standard enthalpy of reaction of 330 kJ/mol SrAl2O4. The precursor mixtures and obtained samples were characterized and compared in terms of temperature behavior, phase composition, crystallite size, specific surface area and morphology. The results prove the superiority of the proposed approach in terms of thermal efficiency and open a new perspective upon the use of strontium and aluminum perchlorates in the combustion synthesis of highly crystalline SrAl2O4-based materials, such as SrAl2O4: Eu, Dy phosphors.
Keyword:
Powders: chemical preparation
Powders: solid state reaction
Sintering
Optical properties
期刊
IF:
5.6
论文数:
5.1W
被引数:
15.5W
机构
引用论文
Structural and optical properties of SrAl2O4: Eu2+/Dy3+ phosphors synthesized by flame spray pyrolysis technique通过火焰喷雾热解技术合成的SrAl2O4: Eu2 /Dy3荧光粉的结构和光学性质
Combustion synthesis of three-dimensional reticular-structured luminescence SrAl2O4:Eu,Dy nanocrystals
SOLID STATE SCIENCES
IF3.3
A critical role of pH in the combustion synthesis of nano-sized SrAl2O4: Eu2+, Dy3+ phosphorPh值在纳米SrAl2O4: Eu2,Dy3荧光粉燃烧合成中的关键作用
Preparation and characterization of flower-like SrAl2O4:Eu2+, Dy3+ phosphors by sol-gel process花状SrAl2O4:Eu2,Dy3荧光粉的溶胶-凝胶法制备及表征

