中國(guó)有色金屬學(xué)報(bào)
ZHONGGUO YOUSEJINSHU XUEBAO
| 第18卷 第11期 總第116期 2008年11月 |
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文章編號(hào)：1004-0609(2008)11-2020-05
Sm(CoFeCuZr)12快淬薄帶的晶體織構(gòu)與磁性能各向異性
潘 晶，劉新才，郭鵬舉，肖 軍，徐 峰
(寧波大學(xué) 材料科學(xué)與化學(xué)工程學(xué)院，省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地，寧波315211)
摘 要: 在輥表面速度為15~35 m/s的條件下制備Sm(Co0.68Fe0.20Cu0.08Zr0.04)12合金快淬薄帶，對(duì)薄帶的微觀組織、晶體織構(gòu)和磁性能各向異進(jìn)行研究。結(jié)果表明：薄帶的微觀組織由成束的Th2Ni17型結(jié)構(gòu)的2׃17相取向柱晶在薄帶平面內(nèi)交織排列而成，每一束柱晶內(nèi)各個(gè)柱晶之間互相平行，而各束柱晶的取向隨機(jī)分布；隨著輥速?gòu)?5 m/s增加到35 m/s，柱晶寬度顯著細(xì)化，在35 m/s時(shí)達(dá)到285 nm；當(dāng)輥表面速度分別為15、25和35 m/s時(shí)，薄帶自由面的衍射譜中衍射峰強(qiáng)度比(I(200) /I(111))分別為3.0、3.6和4.5，表明快淬薄帶自由面存在(200)晶體織構(gòu)并且隨著輥速的增大而增強(qiáng)，2׃17相柱狀晶的易磁化方向[001]晶向則處于薄帶平面內(nèi)；平行于薄帶平面方向的飽和磁化強(qiáng)度和剩磁比垂直于薄帶平面方向的分別高出0.21~0.37 T和0.04~0.10 T；隨著輥速?gòu)?5 m/s增大到35 m/s，薄帶的飽和磁化強(qiáng)度、剩余磁化強(qiáng)度和矯頑力都相應(yīng)提高。
關(guān)鍵字: Sm-Co合金；快淬薄帶；晶體織構(gòu)；磁各向異性
Crystalline texture and magnetic anisotropy of Sm(CoFeCuZr)12 melt-spun ribbons
PAN Jing, LIU Xin-cai, GUO Peng-ju, XIAO Jun, XU Feng
（State Key Base Laboratory of Novel Functional Materials and Preparation Science,
Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China）
Abstract:Sm(Co0.68Fe0.20Cu0.08Zr0.04)12 melt-spun ribbons were prepared at wheel surface speed of 15−35 m/s. The microstructures, crystalline texture and magnetic anisotropy were studied. The results show that the microstructures of the melt-spun ribbons are composed of many binds of oriented columnar of 2׃17 phase with Th2Ni17–type structure. Within a bind, many columns parallel to each other. And the directions of the binds are distributed randomly in the ribbon plane. With the wheel surface speed increasing from 15m/s to 35m/s, the average widths of the columnar sharply decrease, and it is 285 nm at 35 m/s. The intensity ratios of I(200) to I(111) in the XRD patterns on the ribbon plane which are melted at the wheel surface speed of 15, 25 and 35 m/s are 3.0, 3.6 and 4.5, respectively. This exhibits the existence of (200) texture in the ribbon plane and it is intensified with increasing wheel surface speed. Thus, the easy magnetization axes [001] of 2׃17H columnar are in the ribbon plane. The saturation magnetization and residual magnetization of the ribbons measured along the length direction in the ribbon plane are 0.21−0.37 T and 0.04−0.10 T higher than those measured along the direction perpendicular to the ribbons. As the wheel surface speed increases from 15 m/s to 35 m/s, the intrinsic coercive is enhanced, and so are the saturation magnetization and the residual magnetization.
Key words: Sm-Co alloys; melt spun ribbons; crystalline texture; magnetic anisotropy
