Sm(Co0．68Fe0．20Cu0．08Zr0．04)z(z=10、12)合金快淬薄带的微观组织特征  

Microstructure characteristics of the Sm(Co_(0.68)Fe_(0.20)Cu_(0.08)Zr_(0.04))_z(z=10,12)melt-spun ribbons

作　　者：潘晶[1] 刘新才[1] 郭鹏举[1] 徐峰[1] 肖军[1] 

机构地区：[1]宁波大学材料科学与化学工程学院,宁波市新型功能材料及其制备科学实验室,省部共建国家重点实验室培育基地,浙江宁波315211

出　　处：《功能材料》2008年第8期1292-1294,共3页Journal of Functional Materials

基　　金：国家重大基础研究前期专项资助项目(2004CCA04000);国家自然科学基金(50744014);浙江省自然科学基金(Y406389);宁波市科技攻关项目资助项目(2006B100054)

摘　　要：在V=15m/s淬速下制备Sm(Co_(0.58)Fe_(0.20) Cu_(0.08)Zr_(0.04))_z(z=10、12)合金的快淬薄带,对薄带的相结构和微现形貌进行了研究。薄带自由表面SEM分析表明,微观组织由取向生长的胞柱晶束呈编织状构成,当z=10时,一个胞柱晶尺寸大约为(1～1.5)μm×(15～25)μm,而一个胞柱晶束的尺寸大约为(18～13)μm×(15～25)μm,当z值由10增大至12时,胞柱晶束变窄、变短.薄带自由表面XRD和EDAX分析显示,z=10的合金快淬薄带的微观组织以1:7H结构为主,伴有少量的2:17H结构,而z=12的合金快淬薄带相结构是2:17H.取向生长的胞柱晶的c轴[001]在薄带平面内取向,每一束胞柱晶内各柱晶的c轴是互相平行的,而不同胞柱晶束的c轴取向不同。Sin（Co0. 68 Fe0. 20Cu0.08 Zr0.04 ）z （z= 10, 12） melt-spun ribbons were prepared at wheel surface speed of V = 15m/s. Their microstructures have been researched. The SEM results on the free surface of the ribbons show that many binds of oriented celluler columns are woven. When z= 10, the average size of a celluler column in a bind is （1-1.5）μm× （15-25）μm and that of a bind is （18-13）μm× （15-25）μm. As z is increased from 10 to 12, the bind becomes thinner and shorter. The XRD 和 EDAX results show that the structure of the main phase for the ribbon with z=10 is 1 ： 7H （TbCu7） type matrix phase with a minor 2.17H, and the structuure of phase for the ribbon with z=12 is 2 ： 17H （Th2Ni17） type. And their c-axes [001] are in the ribbon plane. The c-axes of celluler columns are parallel to each other in a bind, but they are different in different binds. Thus, each of bind is anisotropic, but the whole ribbon with all binds are isotropic.

关 键 词：Sm-Co合金 快淬薄带 微观组织形貌 相结构 

分 类 号：TM273[一般工业技术—材料科学与工程]