A method for manufacturing a highly-crystallized oxide powder, wherein an oxide powder is produced by ejecting a starting material powder comprising at least one metal element and/or semimetal element, which will become a constituent component of the oxide, into a reaction vessel together with a carrier gas through a nozzle; and heating the starting material powder at a temperature higher than the decomposition temperature or reaction temperature thereof and not lower than (Tm/2)° C., where Tm° C. stands for a melting point of the oxide, in a state in which the starting material powder is dispersed in a gas phase at a concentration of not higher than 10 g/L. In the above method, the starting material powder may be mixed and dispersed in the carrier gas by using a dispersing machine prior to being ejected into the reaction vessel through a nozzle. The resultant oxide powder has a high crystallinity, a high dispersibility, and a uniform particle size, without introducing impurities thereinto, by a low-cost and simple production equipment.
一种制造高结晶氧化物粉末的方法,其中通过喷嘴将至少含有一种
金属元素和/或半
金属元素的起始物质粉末,与载气一起喷入反应容器中,制备氧化物粉末;并在起始物质粉末以不高于10 g/L浓度的气相分散状态下,以高于其分解温度或反应温度且不低于氧化物的熔点(Tm/2)°C的温度加热。在上述方法中,可以使用分散机将起始物质粉末在喷入反应容器之前与载气混合和分散。该方法使用低成本和简单的生产设备,生产出高结晶度、高分散性和均匀粒径的氧化物粉末,不会引入杂质。