In this paper the two main preparation technology, gas evaporation process and chemical reduction reaction process which can prepare ultrafine metallic powders in industrial scale are reviewed, several key issues on these preparation teehnologies are deeply discussed, and their dev(?) ment directions are forecasted.
评述了能工业规模制备金属超微粉末的气相蒸发法制备技术和化学还原反应法制备技术,重点讨论了制备工艺中的几个关键问题,并对该技术的发展方向作了展望。
Parameters of gas evaporation method to prepare the nano-particles of amorphous Ni-Ti alloy have been investigated.
采用气相蒸发法制备纳米量级的Ｎｉ－Ｔｉ非晶合金粒子，研究了各种因素对Ｎｉ－Ｔｉ纳米非晶合金粒子形成的影响，并用透射电子显微镜，高分辨电子显微镜，Ｘ射线衍射仪和能谱等多种手段对纳米非晶合金粒子进行了表征。
Based on the experimental data of solar evaporation and 25℃ isothermal evaporation of the borate-containing brine, the evaporation phase diagram of the borate-containing brine has been constructed.
在进行青藏高原盐湖含硼盐卤天然蒸发和25℃等温蒸发实验的基础上,绘制成复杂盐卤的蒸发相图。