SC工艺对Nd9.8Dy2.4Fe71.8Co10B6磁粉微结构影响的研究
Effect of SC Process on Microstructure of Nd9.8Dy2.4Fe71.8Co10B6 Magnetic Powders
DOI: 10.12677/MP.2018.84018, PDF,  被引量    国家自然科学基金支持
作者: 刘 敏*, 龚伟平, 李雅洁, 程利霞：惠州学院，电子功能材料实验室，广东 惠州
关键词: SC铸片；HDDR工艺；微观结构；晶粒尺寸；SC Casting Piece； HDDR Process； Microstructure； Grain Size
摘要: 本文研究了SC (strip casting)工艺对Nd9.8Dy2.4Fe71.8Co10B6合金铸片的成分、磁粉微结构、晶粒尺寸的影响。结果表明：当辊轮转速v = 3 m/s时，SC铸片紧贴辊轮的一面其X射线衍射图显示出(221)、(412)和(523)面的衍射峰，没有α-Fe衍射峰。这样的SC合金铸片再进行优化的HDDR工艺处理所制备的磁粉，其颗粒中包含的Nd2Fe14B晶粒尺寸分布均匀，大小为0.2~0.3 μm，接近单畴晶粒的大小，且晶粒表面光滑，晶粒与晶粒间直接接触，不存在任何晶粒间界相。
Abstract: In this paper, the effects of SC (strip casting) process on casting piece composition, microstructure, grain size, anisotropy and magnetic properties of powders were investigated. The results indicated that for the copper wheel speed of 3 m/s, the X-ray diffraction diagram shows the diffraction peak of (221), (412) and (523), and no α-Fe diffraction peak for SC casting piece closing to the roller side. Thus SC alloy is directly carried out a modified HDDR process to prepare magnetic powders, and the magnetic powders contain Nd2Fe14B grains with a uniform size distribution from 200 nm to 300 nm, which is close to the single domain size of Nd2Fe14B phase. And thus grain owns smooth surface, and contacts directly with each other. There is no grain boundary phase between grains.
文章引用：刘敏, 龚伟平, 李雅洁, 程利霞. SC工艺对Nd9.8Dy2.4Fe71.8Co10B6磁粉微结构影响的研究[J]. 现代物理, 2018, 8(4): 149-153. https://doi.org/10.12677/MP.2018.84018

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