以紫钨为原料制备纳米钨粉体的研究

Preparation of Nano-tungsten Powder from WO2.72

摘要:

以紫钨为原料，利用工业化生产技术制备纳米钨粉体。通过XRD、EDS、SEM、FESEM、DTA-TG和比表面及孔径分布分析仪对样品的物相、成分、形貌、热稳定性和比表面及孔结构进行表征。结果表明：通过降低还原温度、减缓推舟速度、减小装舟量和增大通氢流量等还原工艺条件可制备优质纳米W粉体。

Abstract:

Nano-tungsten powder was prepared on the basis of an industrialized production technique, using WO2.72 as the raw materials. The phase, composition, morphology, thermal stability, special surface area and pore structure of the samples were characterized by XRD, EDS, SEM, FESEM, DTA-TG, BET and Pore Size Analyzer. The results show that high-quality nano-tungsten powder can be produced by reducing the hydrogen reduction temperature, slowing down the pushing boat speed, reducing the boat charging capacity and increasing hydrogen flow rate.