By using chemical reduction method in aqueous solutions,the ultramicro copper powder with mean diameter about 50nm was prepared.
By using chemical reduction method in aqueous solutions,the ultramicro copper powder with mean diameter about 50nm was prepared.
分别采用表面包银和磷化处理的方法，提高了铜粉的抗氧化性能，使５０ｎｍ铜超微粉末能稳定地存在于空气中，磷化处理后铜粉末的氧化温度高于２２０℃。