论文部分内容阅读
利用脉冲激光加热的特点,结合超低温基质隔离技术,制得了结构疏松的微晶镍和无定形镍铝合金及其超细微粒,粒径可达5～10nm。用γ-Al_2O_3基片收集的样品,用扫描电子显微镜放大1.2万倍看不出载有样品的基片与γ-Al_2O_3空白基片形貌的差别。这一方法适用于寻找新的金属催化剂、实验室制备金属微晶和无定形金属。
The characteristics of pulsed laser heating and the combination of ultra-low temperature matrix separation technology were used to prepare microcrystalline nickel and amorphous nickel-aluminum alloy and their ultrafine particles with the size of 5 ~ 10nm. The samples collected on the γ-Al 2 O 3 substrate were magnified 12,000 times by scanning electron microscopy. The difference between the sample loaded substrate and the γ-Al 2 O 3 blank substrate morphology was not observed. This method is suitable for finding new metal catalysts, laboratory preparation of metal crystallites and amorphous metals.