【作者】 叶荣昌； 张波； 宗毳； 龙毅； 常永勤；

【Author】 YE Rong-chang ZHANG Bo ZONG Cui LONG Yi CHANG Yong-qin (School of Materials Science and Engineering,University of Science and Technology,Beijing 100083,China)

【机构】 北京科技大学材料学院；

【摘要】 采用旋转盘离心雾化设备制备了磁性蓄冷材料 HoCu₂粉末,并对雾化粉末进行了分析．结果表明, 粒径＜φ154μm 雾化粉末的比例较高,接近30％,粉末形态主要以球形颗粒为主,仅有极少量的形状不规则颗粒；粒径在φ154～300μm 粉末的比例最大,收得率在60％以上,与粒径＜φ154μm 粉末相比,残缺颗粒的比例有所增加；大尺寸粉末（＞φ300μm）的比例很低,仅为9％左右,除了少量带有缺陷的球形颗粒外, 绝大多数为薄片状颗粒．雾化粉末的 Cu 含量为 43．59％（质量分数）,氧含量为0．055％（质量分数）,为单一 HoCu₂相结构,无其它杂相存在．更多还原

【Abstract】 In this paper,research has been made on the powders of magnetic regenerator material HoCu₂ prepared by rotating disk centrifugal atomization.Results show that,the size of powders obeys normal distribution.The proportion of powders less than φ154 μm is near 30%,consisted mainly of spherical powders and little amount of irregular powders. The yielding rate of powders between φ154～300μm is more than 60%,with more irregular powders.The proportion of large powders（greater than φ300μm）is as low as 9%,most of which are flakes.The content of Cu and oxygen in the powders are 43.59wt% and 0.055wt% respectively.And the powders consist of HoCu₂ single phase.更多还原