研究了三种粒度和形貌的铼粉，D50＜30μm常规铼粉和D50＜5μm超细铼粉以及D50＜30μm球形铼粉，单独或合批处理后成形和烧结。分别对三种铼粉与合批粉末的形貌和粒度进行测试，检测致密度，分析烧结坯料晶粒度以及观察烧坯断口形貌，分析纯铼烧坯的室温和高温力学性能和断裂方式。

Three kinds of rhenium powder with particle size and morphology, D50＜30μm conventional rhenium powder, D50＜5μm ultrafine rhenium powder and D50＜30μm spherical rhenium powder, were formed and sintered separately or in batches. Test the morphology and particle size of the three kinds of rhenium powder and the batch powder respectively, detect the density, analyze the grain size of the sintered billet, observe the fracture morphology of the burnt billet, and analyze the room temperature and high temperature mechanical properties and fracture mode of the pure rhenium burnt billet .