中文摘要：

在选择激光 sintering 技术使用的聚合物涂的铝粉末的一种类型被涂层聚合物在铝粒子上准备并且冻结磨擦技术，与 71 μ m 的最大的粒子直径。聚合物涂的铝粉末的激光 sintering 实验被使用自我开发的选择激光 sintering 机器(HLRP-350I ) 进行。显微镜的分析的方法被用来调查聚合物涂的铝粉末的动态激光 sintering 过程。基于学习，聚合物涂的铝粉末的激光 sintering 机制被介绍。机制是粘滞的，这被发现当激光 sintering 温度在 100 ° C 和 160 ° C 之间时，流动，它能被一个二范围的模型描述；并且当温度在 160 ° C 上面时，机制是 melting/solidification。

英文摘要：

A type of polymer-coated molybdenum powder used in selective laser sintering technology was prepared by coating polymer on molybdenum particles and frozen grinding techniques, with the maximum particle diameter of 71 μm. The laser sintering experiments of polymer-coated molybdenum powder were conducted by using the self-developed selective laser sintering machine （HLRP-350I）. The method of microscopic analysis was used to investigate the dynamic laser sintering process of polymer-coated molybdenum powder. Based on the study, the laser sintering mechanisms of polymer-coated molybdenum powder were presented. It is found that the mechanism is viscous flow when the laser sintering temperature is between 100 ℃ and 160 ℃, which can be described by a two-sphere model; and the mechanism is melting/solidification when the temperature is above 160 ℃.