In Situ Synchrotron X-ray Diffraction Studies of Single-walled Carbon Nanotubes for Electric Double-layer Capacitors

In situ synchrotron X-ray diffraction experiments of SWCNT （single-walled carbon nanotube） electrode in alkali halide aqueous electrolyte at several applied potentials were performed, and the change in the diffraction pattern of SWCNTs was observed. It was found that the position of the 100 diffraction peak does not change with applied potential while the peak intensity decreases with anion adsorption. It was concluded that the space inside the tube would be the important ion adsorption site for the well-gown SWCNT bundles.

Fe-B合金激光熔凝形成非晶态机理探讨

本文对激光表面熔区的显微组织进行了热力学和动力分析，提出一个简化的熔池中温度分布的物理模型，分析了非晶态形成过程。用ＣＷＣＯ２激光扫描Ｆｅ—Ｂ合金表面，得到１３０μｍ～２００μｍ厚度的非晶层，并对激光低速扫描时熔区再结晶点阵常数变化的有关数据进行了对比，对激光非晶态形成的条件及有关工艺参数进行了分析和讨论。