W-Ni-Fe系纳米级复合氧化物粉末的制取及粉末特性

Making W-Ni-Fe System Nanomic Composite Oxied Power and Its Futures

摘要: 用H₂WO₄,NiCl₂的碱性水溶液与FeCl₂水溶液快速混合的方法,在袒声喷雾热转换装置中,制备了(W,Ni,Fe)系纳米级复合氧化物粉末,通过X射线衍射及电镜分析,研究了它的物相组成与使用溶剂的关系;同时研究了粉末的颗粒形貌特征及粒度范围.结果表明,采用上述2种溶液快速混合及喷雾转换的方法可以制备出成分均匀的复合氧化物粉末.在使用自制的"x"溶剂时,氧化物粉末的物相组成为WO₃,NiO,粉末粒度范围为15~50 nm,颗粒形貌近似为球形.

Abstract: he Nanomic composite oxied power of(W,Ni,Fe)system is made in a ultrasionic spray heat-transfer device using rapid mixig method of alkalinous solution of H₂WO₄,NiCl₂ and FeCl₂ solution.The phase composition of the composite oxide power and its relation to the flux used are studied by means of X-ray diffraction and(XRD)TEM analysis.The shape characteristics of power particle and the particle range are studied as well.The results show that homogenous composition of composite oxide power can be made by the methods of rapid mixing of the above two solutions and ultrasonic spray heat-transfer methods.When the self-made oxide flux is used,the phase composition of composite oxide power is WO₃,NiO.The powder particle range is 15~50nm and the particle shape is near to sphere.