柔性压磁复合材料的力学和磁特性研究
Study on mechanical and magnetic performance of Flexible piezomagnetic Composites
史平安，万强，黄渝鸿，吴俊英
点击：2378次 下载：0次
作者单位：中国工程物理研究院总体工程研究所
中文关键字：柔性压磁复合材料，初始磁导率，磁阻抗
英文关键字：Flexible piezomagnetic composites Initial magnetic permeability Magneto-impedance
中文摘要：以硅橡胶为基体、非晶粉Fe73.5Cu1Nb3Si13.5B9 为增强材料，制备了Fe73.5Cu1Nb3Si13.5B9/硅橡胶柔性压磁复合材料。利用CSS-3901D电子蠕变松弛试验机和力磁耦合加载试验机得到了Fe73.5Cu1Nb3Si13.5B9/硅橡胶柔性压磁复合材料的压缩性能、蠕变性能和磁感应强度的变化规律，分析了环境温度、白炭黑含量和热处理工艺等对材料力学性能和初始磁导率的影响。研究结果表明，气相白碳黑含量对复合材料的力学性能的影响较大，而非晶粉热处理工艺的影响较小；非晶粉的热处理能够有效地提高复合材料的初始磁导率，降低复合材料的磁阻抗。该研究为新型高灵敏度的压力传感器的开发设计提供了理论依据。
英文摘要：Fe73.5Cu1Nb3Si13.5B9/silicone rubber piezomagnetic composites were prepared by using silicone rubber as matrix material, Fe73.5Cu1Nb3Si13.5B9 powder as modifier. The viscoelastic property and magnetic property of the samples were obtained by using CSS-3901D electron creep relaxation tester and the magnetomechanical coupling testing machine, and the influence of environmental temperature and the content of white carbon black and heat treatment on the mechanical properties and initial magnetic permeability were investigated in this paper. The results indicate that mechanics properties of the composite were improved by adding white carbon black, and annealing had no obvious influence on mechanics properties of the composite. The initial magnetic permeability improved and magneto-impedance decreased with the annealing of the composite. The results had specified direct significances for development, designation of new type higher sensitivity sensor.