摘要
以硝酸钴、碳酸钴和硫酸钴为原料,制备Co(OH)2,乙二醇为溶剂和还原剂,制备了分散性较好的球形超细钴粉。研究了不同钴盐制备的前驱体Co(OH)2对后续反应的影响及单位体积乙二醇中Co(OH)2和NaOH加入量及反应时间、温度和添加剂对钴粉的粒径和形貌的影响。用SEM和XRD测试钴粉的粒子形貌、晶体结构。结果表明,乙二醇还原的钴粉为球形,晶体结构以面心立方为主,平均粒径0.8μm,钴含量>99.5%。
Cobalt hydroxide has been prepared using cobalt nitrate, cobalt carbonate and cobalt sulfate respectively as raw materials. Taking glycol as solvent and reductant, the spherical, monodispersed, ultrafine cobalt powder is prepared. The influence of prophase cobalt hydroxide prepared by different cobalt salts over follow-up reaction is studied, and the affects of quantity of sodium hydroxide and cobalt hydroxide in unit volume of glycol, reaction time, temperature and additives on cobalt particle size and shape are also discussed. The microstructure of ultrafine cobalt powder is studied by SEM and XRD. The results show that the cobalt powder is spherical, the crystal mostly with face centered cubic （fcc） structure, the average particle size is 0.8μm, the cobalt content is 〉99.5% .
出处
《有色金属（冶炼部分）》
CAS
北大核心
2005年第4期37-39,共3页
Nonferrous Metals（Extractive Metallurgy)
关键词
超细钴粉
还原
制备
乙二醇
Ultrafine cobalt powder
Reduction
Preparation
Glycol
