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Overview of composition and technique process study on 2:17-type Sm-Co high-temperature permanent magnetChao Wang,Ming-Gang ZhuDivision of Functional Materials,Central Iron and Steel Research Institute摘 要:Sm-Co permanent magnets are widely used in aerospace equipments,tubes,sensors and hybrid electric vehicles due to their excellent magnetic properties......
Magnetic Microstructures of 2:17 Type Sm(Co,Fe,Cu,Zr)z Magnets Detected by Magnetic Force Microscopy Han Baoshan1,Xia Ailin1,Guo Zhaohui2,Li Wei2 (1.State Key Laboratory of Magnetism, Beijing... 100081, China) Abstract:The magnetic microstructures of 2:17 type Sm(Co,Fe,Cu,Zr)z magnets were detected by magnetic force microscopy.Comparing the microstructures of the specimens coated......
Correlation between microstructure and thermal dilation behavior of amorphous Fe-Co-Zr-Mo-W-B alloys ZHANG Ji-teng(张集滕)1, WANG Wei-min(王伟民)1,2, LI Gui-hua(李桂华)1, MA Hai-jian(马海健)1, QIN... cheaper than other BMGs, but also due to the unique combination of high physical, chemical and mechanical properties[4-5]. Since INOUE et al[6] synthesized Fe-Co-(Zr, Nb, Ta)-(Mo, W)-B amorphous alloys......
文章编号:1004-0609(2007)05-0750-07 稀土钐钴永磁功能合金膜的电沉积制备及磁学性能 龚晓钟,汤皎宁,李均钦,钱雪梅,雷 虹 (深圳大学 理学院 深圳市特种功能材料重点实验室,深圳 518060) 摘 要:在尿素-NaBr-KBr-甲酰胺体系中电沉积制备稀土-铁系金属(Sm-Co)合金,研究沉积液中主盐浓度配比,电流密度等工艺参数对沉积膜的形貌及合金含量的影响.用扫描电镜(SEM)观察金属Sm-Co合金沉积膜表面形貌,结果表明,金属Sm-Co合金沉积膜较平整均匀,呈现银灰色；X射线衍射(XRD)分析表明稀土金属Sm-Co合金为SmCo5六方晶体；特征X射线谱(EDS)证明沉积膜由金属Sm,金属Co和极少量的O,C组成,单质Sm的含量(质量分数)为29.07%,单质Co含量为63.51%；Sm与Co的摩尔比约为1?5；经Ar离子对样品表面层溅射......
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Growth restriction effects during solidification of aluminium alloys CHEN Zhong-wei(陈忠伟), HE Zhi(何 志), JIE Wan-qi(介万奇) State Key Laboratory of Solidification Processing... the initial solidification, the growth-restriction parameter Q is deduced and a comprehensive physical basis of Q is obtained by using an initial solute distributing equation. For the alloys with more......
分散的Sm-Co永磁纳米颗粒的机械化学合成及磁性能赵立新1,2,孟国营2,郑立允1,31. 河北工程大学机电学院2. 中国矿业大学(北京)机电与信息工程学院3. 钢铁研究总院功能材料研究所摘 要:通过机械化学合成方法制备了矫顽力分别为2.95×106,2.83×106和8.60×105 A/m的分散的单晶纳米Sm2Co7,SmCo5和Sm2Co17硬磁颗粒.研究了球磨时间,原料配比和退火工艺等对所制备的纳米永磁颗粒的微观组织,结构和磁性能的影响.结果表明,机械化学球磨时间至少是4h或更长时间才能获得Sm-Co硬磁合金粉末.原料经过高能球磨后,未退火时,由于大部分颗粒为非晶结构,矫顽力较低,随着退火温度的上升,矫顽力增大,当退火温度为600℃时,达到最大值为2.83×106 A/m,然后,随着退火温度的......
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Microstructure and mechanical properties of ZA62 based magnesium alloys with calcium addition WAN Xiao-feng(万晓峰)1, SUN Yang-shan(孙扬善)1, 2, XUE Feng(薛 烽)1, 2, BAI Jing(白 晶)1, 2, TAO Wei-jian(陶卫建... Engineering Research Center For Magnesium Alloys, Nanjing 211224, China Received 6 June 2009; accepted 3 September 2009 ......
High performance Sm-Co powders obtained by crystallization from ball milled amorphous stateJinkui Fan1,2,Qiang Zheng3,Rui Bao1,Jianhong Yi1,Juan Du21. Faculty of Materials Science and Engineering... of Materials and Chemical Engineering, Ningbo University of Technology摘 要:Isotropic Sm-Co nanoparticle powders with high coercivity were prepared by high-energy ball......
