(北京科技大学 材料科学与工程学院北京市
表面纳米技术工程研究中心, 北京 100083)
摘 要: 以次亚磷酸钠为还原剂, 通过控制液相还原反应条件, 从硫酸镍溶液中制备出纳米镍磷合金粉。 研究了超声波功率、 冷却方式、 包覆剂用量等因素对镍磷合金粉的形貌、 尺寸和分布以及包覆后的纳米镍磷合金粉的抗氧化性的影响。 激光粒度分析仪分析表明粉末粒径分布均匀, 中值粒径为50~65nm; TEM和XRD检测结果显示这种粉末粒子呈类球形, 为非晶态结构。
关键字: 纳米镍磷合金粉; 超声波; 液相还原; 非晶态
using ultrasonic chemistry reduction in aqueous solution
(Research Center of Nano Surface Technology Engineering BeijingMaterial Science and Engineering department, University of Science and Technology Beijing,
Beijing 100083, China)
Abstract:Nanostructured nickel-phosphorous powders were prepared using ultrasonic chemistry reduction in nickel sulfate solution. The influence of ultrasonic powder, cooling method and dosage of encapsulation on the morphological, size and distribution of Ni-P nano powders were analyzed. The average size of these powders was estimated at 50~65nm. These particles are spherical and amorphous.
Key words: Ni-P nano powder; ultrasonic; chemical reduction; amorphous