超细镍粉化学气相法制备过程中温度的影响

以NiCl2·6H2O为原料,采用化学气相沉积法制备超细镍粉,就反应温度对产物形貌、粒度等性能的影响进行了详细考察。采用扫描电镜、激光粒度分析、X射线衍射对样品的形貌、粒度、物相等进行了表征。结果表明:温度对颗粒的结晶度和粒径分布有显著影响,采用化学气相沉积法制备的粉末颗粒为纯镍粉,形貌基本为类球形,粒度在亚微米级范围内,结晶度良好。

Effect of Temperature on Chemical Vapor Deposition of Ultra-Fine Nickel Powder

The effect of reaction temperature on the particles properties such as morphology and particle size are investigated in detail during the preparation of ultra-fine nickel powder by chemical vapor deposition (CVD), which takes NiCl2·6H2O as raw materials. Morphology, size and phase of the prepared samples are characterized by scanning electron microscope (SEM), Laser particle analysis and X-ray diffraction (XRD). The results indicate that reaction temperature has profound impact on the crystallinity and size distribution of particles. The obtained powders are pure nickel with spherical-like morphology, submiron size and high crystallinity.