放电等离子体烧结FePt合金的微观结构和磁学性能

摘要

Fe50Pt50 alloys were prepared by melting, milling and spark plasma sintering (SPS), the microstructure and magnetic properties of the alloys were analyzed. The results show that the alloy will transform into L10 ordered fcc phase from disordered fcc phase during sintering. The degree of order and the coercivity of Fe50Pt50 alloys decreases as the SPS temperature rises from 700℃ to 900℃. A maximum magnetic energy product of 50.81 kJ/m3 can be obtained for the alloy sintered at 800℃.%采用熔炼、机械破碎和放电等离子体烧结法制备了Fe50Pt50合金，研究了合金的微观结构和磁学性能。结果表明在烧结过程中合金中无序的面心立方相向有序的 L10有序相转变，Fe50Pt50合金的有序度和矫顽力随着放电等离子体烧结温度的升高而降低；在800℃烧结时，可获得的最大磁能积为50.81 kJ/m3。