CAJ | 학술논문

以五氧化二铌(Nb205)和氧化镁(MgO)为原料,柠檬酸作配位剂,采用静电纺丝结合溶胶-凝胶法制备了铌酸镁(MgNb206)陶瓷纤维.在本合成体系中,高质量Nb5+溶液的获得是形成MgNb2O6前驱体溶胶的关键步骤.通过TGA,FTIR,XRD,TEM以及SEM技术对纤维的形貌,微观结构以及组成进行了表征.结果表明,900℃烧结以后得到的MgNb2O6纤维长度约为10 em,具有中空结构,壁厚约为800nm.
이오양화이니(Nb205)화양화미(MgO)위원료,저몽산작배위제,채용정전방사결합용효-응효법제비료니산미(MgNb206)도자섬유.재본합성체계중,고질량Nb5+용액적획득시형성MgNb2O6전구체용효적관건보취.통과TGA,FTIR,XRD,TEM이급SEM기술대섬유적형모,미관결구이급조성진행료표정.결과표명,900℃소결이후득도적MgNb2O6섬유장도약위10 em,구유중공결구,벽후약위800nm.
MgNb2O6 ceramic fibers were synthesized using niobium oxide and magnesium oxide as starting materials by the electrospinning with sol-gel process.Citric acid was used as the chelating reagent to coordinate to the metal ions.The key step to the formation of MgNb2O6 precursor sols is to obtain a high quality solution of Nb5+.The morphology,structure,and composition of MgNb2O6 fibers were characterized by TGA,FTIR,XRD,TEM and SEM techniques.The results show that MgNb22O6 fibers calcined at 900 °C with length in the order of 10 cm have the hollow structure and are composed of nanoparticles (particle size＜100 nm) and the thickness of the wall is no more than 800 nm.