腔室压力对Ce17Fe78B6合金磁性能及微观结构的影响

Effect of chamber pressure on the magnetic property and microstructure of the Ce17Fe78B6 alloy

摘要:

本文采用熔体快淬法制备了Ce17Fe78B6合金,研究了不同腔室压力对其磁性能和微观结构的影响。研究结果表明：在熔体快淬过程中,不同的腔室压力对Ce17Fe78B6合金的磁性能和微观结构有着很大的影响。随着腔室压力的增加,快淬条带的矫顽力逐渐增大,但是剩磁和最大磁能积却呈现先升高后下降的趋势。X射线衍射和透射电子显微镜的研究结果表明：当腔室压力为0.05 MPa时,Ce17Fe78B6合金中的硬磁相Ce2Fe14B的体积百分含量最高,而且晶粒细小且分布均匀,因而具有最佳的磁性能。

Abstract:

The melt-spun Ce17Fe78B6 ribbons were prepared by melt-spinning at various chamber pressures. The effect of chamber pressure on the magnetic property and microstructure of Ce17Fe78B6 alloy was investigated. Results showed that the magnetic property and microstructure of the Ce17Fe78B6 alloy were sensitive to the chamber pressure. With the chamber pressure increasing, the coercivity increased while the remanence and maxium engery product reached a maximum value at 0.05 MPa. The results of X-ray diffraction and transmission electron microscope showed that the Ce17Fe78B6 alloy had the highest volume fraction of hard magnetic Ce2Fe14B phase and uniform microstructure at a chamber pressure of 0.05 MPa, resulting in optimal magnetic properties.