摘要
用高频感应加热法在Ar气氛中制备了Zn超细颗粒,利用透射电镜、X-射线衍射仪、X-电子能谱议、红外谱仪及差示扫描术研究了颗粒的形态、晶体结构、表面组成、光吸收及颗粒的热稳定性。结果表明.颗粒形状大部分为六边形,也有少量立方形,晶体结构与块材Zn相同,在紫外及可见光部分有很强的先吸收,而在红外吸收谱上的一个吸收峰可能是表面氧化层表面声子吸收所致。在室温下,颗粒是稳定的,但在高温下,由于表面吸附的氧而发生了氧化过程。
Zn ultrafine particles were prepared by gas-evaporation technique and induction heating method. By using X-ray diffraction analysis(XRD), transsmission electron microscope(TEM), X-ray photoelectron spectroscope(XPS) and differential scanning calorimeter, their crystal structure, particle size and morphoology, surface state and thermal stability were investigated.