论文部分内容阅读
在草酸电解液中用二次阳极氧化法制备多孔阳极化氧化铝(Anodic Aluminum Oxide,AAO)模板。通过对电流密度、氧化时间、电解液浓度等参数的调整,最终获得孔洞分布均匀、孔径基本一致、孔口呈六边形的AAO模板。采用不去除中间铝,用逐级降压法和电化学法减薄阻挡层,然后利用中间铝作为电极,在非水体系中以AAO为模板,直流电沉积钆钴合金纳米线阵列。经过SEM观测,AAO模板孔径在60nm左右,去阻挡层前后变化不大,制备的钆钴合金纳米线排列有序、尺寸一致;EDS测定表明纳米线为钆钴合金及少量氧化物纳米线,钆钴摩尔质量比为1:7.5,钆钴合金质量分数为90.66%;XRD分析图谱表明所得到的钆钴合金纳米线为非晶态。
Porous Anodic Aluminum Oxide (AAO) template was prepared by the secondary anodic oxidation in oxalic acid electrolyte. Through the adjustment of current density, oxidation time and concentration of electrolyte, the AAO template with uniform pore distribution, uniform pore diameter and hexagonal pore was finally obtained. The intermediate aluminum was removed, and the barrier layer was reduced by the step-down and electrochemical methods. Then, the intermediate aluminum was used as the electrode and the gadolinium-cobalt alloy nanowire arrays were deposited by direct current deposition using AAO as the template in the non-aqueous system. After SEM observation, the pore size of AAO template was about 60 nm, and there was not much change before and after the barrier layer. The prepared gadolinium-cobalt alloy nanowires were ordered and the size was consistent. EDS showed that the nanowires were gadolinium-cobalt alloy and a small amount of oxide nanowires, gadolinium Cobalt molar mass ratio of 1: 7.5, gadolinium cobalt alloy mass fraction of 90.66%; XRD analysis shows that the resulting gadolinium cobalt alloy nanowires are amorphous.