采用费氏粒度分别为2.3、3.3、5.4μm的钼粉，利用相同等静压成形、烧结工艺得到烧结钼棒，对烧结钼棒取样进行金相、密度、硬度测试，对粉末进行马尔文激光粒度分布测试和SEM观察。马尔文激光粒度分布采集方案：将粉末样品充分混合，取800ml～1000ml去离子水注入大烧杯，启动样品循环系统，进行电子背景测量、光学背景测量和对光。搅拌器的转数2500r/min～2800r/min，遮光度值处于7%～14%范围之内。

Molybdenum powder with Fischer particle size of 2.3, 3.3, 5.4μm was used to obtain sintered molybdenum rods by the same isostatic pressing and sintering process. The sintered molybdenum rods were sampled for metallographic, density, and hardness tests, and the powders were subjected to Malvern laser Particle size distribution test and SEM observation. Malvern laser particle size distribution collection program: Mix the powder samples thoroughly, pour 800ml～1000ml deionized water into a large beaker, start the sample circulation system, perform electronic background measurement, optical background measurement and beam alignment. The speed of the stirrer is 2500r/min～2800r/min, and the shading value is within the range of 7%～14%.