一种钨/稀土金属氧化物复合空心球形粉体 的制备方法，属于无机材料制备领域。以水热碳质球为模板，分散于钨酸铵与稀土盐类混合溶液中，使钨酸根、稀土金属离子渗透入碳球，清洗后干燥；将干燥后的粉末在保护气氛中升温、保温；不进行降温操作，直接打开法兰，通入空气，进行二次煅烧；然后将得到的粉体在氢气气氛下两步煅烧，得到钨/稀土金属氧化物复合空心球形粉体。该材料有如下优点：一方面，球形形貌可以提高粉体的流动性，便于3D打印成形；另一方面，稀土金属元素氧化物的掺杂可细化钨晶粒尺寸，提高其强度、硬度；最后，颗粒内部空心结构的引入，也为制备一些特定的3D打印器件，例如多孔钨制品等，提供了原材料。

A kind of tungsten/rare earth metal oxide composite hollow spherical powder The method of preparing tungsten/rare earth metal oxide composite hollow spherical powder, belongs to the field of inorganic material preparation. Using hydrothermal carbon mass ball as a template, dispersed in a mixed solution of ammonium tungstate and rare earth salts The tungstate and rare-earth metal ions penetrate into the carbon spheres, which are cleaned and then drying; the dried powder is warmed up and held in a protective atmosphere. No cooling operation, directly open the flange, pass air, for secondary calcination; then the obtained powder is calcined in two steps under hydrogen atmosphere calcination to obtain tungsten/rare earth metal oxide composite hollow spherical powder The material has the following advantages The material has the following advantages: on the one hand, the spherical shape can improve on the one hand, the spherical shape can improve the fluidity of the powder and facilitate 3D printing; on the other hand, the On the other hand, the doping of rare earth metal oxides can refine the tungsten grain size and improve its strength and hardness. On the other hand, the doping of rare earth metal oxides can refine the tungsten grain size and improve its strength and hardness. Finally, the introduction of hollow structures inside the particles also provides raw materials for the preparation of some specific 3D printing devices, such as porous Finally, the introduction of hollow structures inside the particles also provides raw materials for the preparation of some specific 3D printing devices, such as porous tungsten products.