低居里点FeCrB非晶合金的磁热效应

Magnetocaloric effect of FeCrB amorphous alloys with low Curie point

  • 摘要: 基于输电线路抗覆冰的应用背景,通过对Fe100-x-yCrxBy(x=11~20,y=9~20)的成分调节和快淬工艺参数控制,制备了同时具有低居里温度和高饱和磁极化强度的非晶带材.测试研究表明Fe65Cr15B20和Fe64Cr16B20的居里温度分别为28.6和11.6℃,Fe65Cr15B20和Fe64Cr16B20在0℃的饱和磁极化强度分别为0.69和0.62 T.设计组装了一种近似绝热磁致热功率的测量装置,用该装置对Fe65Cr15B20和Fe64Cr16B20两种非晶合金带的磁热功率进行了近似测量和分析.

     

    Abstract: Fe100-x-yCrxBy(x=11-20, y=9-20) amorphous ribbons with low Curie point and high saturation magnetization, which could be applied in anti-icing in transmission lines, were prepared by rapid-quenching with various technological parameters. Experimental results show that the Curie temperatures of Fe65Cr15B20 and Fe64Cr16B20 amorphous ribbons are 28.6 and 11.6℃, while the saturation magnetizations of Fe65Cr15B20 and Fe64Cr16B20 amorphous ribbons are 0.69 and 0.62 T at 0℃, respectively. Magnetocaloric effects of Fe65Cr15B20 and Fe64Cr16B20 amorphous ribbons were approximately measured and analyzed by using a self-designed apparatus on the basis of the near heat-insulation method.

     

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