CAJ | 학술논문

采用燃烧合成法制备高纯超细LaB6粉末.考察反应物配比和制样压力等条件对燃烧产物相组成和微观结构的影响,利用XRD、SEM和EDS等技术对燃烧产物和浸出产物进行表征.结果表明,燃烧产物由LaB6,UgO和少量Mg3B2O6组成. 随着制样压力的增加,燃烧产物变得致密坚硬.LaB6的纯度高于99.0％,其粒度为1.92-3.0 μm,晶格常数a＝0.414 8 nm.
채용연소합성법제비고순초세LaB6분말.고찰반응물배비화제양압력등조건대연소산물상조성화미관결구적영향,이용XRD、SEM화EDS등기술대연소산물화침출산물진행표정.결과표명,연소산물유LaB6,UgO화소량Mg3B2O6조성. 수착제양압력적증가,연소산물변득치밀견경.LaB6적순도고우99.0％,기립도위1.92-3.0 μm,정격상수a＝0.414 8 nm.
High-purity,homogeneous and ultra fine LaB6 powders were prepared by combustion synthesis.The effects of reactant ratio and molding pressure on the phase and morphology of the combustion products were studied.The combustion products and leached products were analyzed by XRD,SEM and EDS.The results indicate that the combustion product consists of LaB6,MgO and a little Mg3B2O6.The combustion product becomes denser and harder when the molding pressure increases.The purity of LaB6 is higher than 99.0％.The LaB6 particle size is in range of 1.92-3.00 μm and the lattice constant of LaB6 is a＝0.414 8 nm.