作　　者： ; ; ;

机构地区： 燕山大学

出　　处： 《复合材料学报》 2013年第6期153-158,共6页

摘　　要： 通过高能球磨技术制备了Fe78Si13B9磁性非晶合金粉体,采用XRD和DSC分析了Fe78Si13B9非晶合金粉体的相组成、玻璃转变温度Tg、开始晶化温度Tx和晶化峰温度Tp;利用放电等离子烧结(SPS)技术在不同烧结温度下制备了块体磁性非晶纳米晶合金试样,利用XRD、SEM、Gleeble3500、VSM等分析了不同烧结温度下烧结块体试样的相转变特性、微观形貌、力学性能和磁学性能。结果表明,在500MPa的烧结压力下,随着烧结温度的升高,烧结试样中的非晶相开始逐渐晶化,烧结试样的致密度、抗压强度、微观硬度、饱和磁化强度均显著提高;在500MPa的烧结压力和823.15K的烧结温度下,获得了密度为6.6g/cm3,抗压强度为1500MPa,饱和磁化强度为1.3864T的非晶纳米晶磁性材料。 Fe78Si13B9 magnetic amorphous powder was prepared by high-energy ball-milling and then was consolidated in several solid sample at different sintering temperature by spark plasma sintering technology. The phase composition, glass transition temperature （Tg）, onset crystallization temperature （Tx） and peak temperature （Tp） of Fe78Si13B9 amorphous alloy powders were analyzed by XRD and DSC. The phase transition, microstructure, mechanical properties and magnetic performance of the bulk alloys in different sintering temperature were discussed by XRD, SEM, and vibration sample magnetometer, etc. It is found that with the increase of the sintering temperature at the pressure of 500 MPa, the amorphous phase begins to crystallization gradually and the density, compressive strength, micro-hardness and saturation magnetization of the sintering sample improve significantly. The desirable amorphous nanocrystalline magnetic material at the sintering temperature of 823.15 K and under the pressure of 500 MPa has a density of 6.6 g/cm3, compressive strength of 1500 MPa and a saturation magnetization of 1.3864 T.

关 键 词： 高能球磨 非晶纳米晶 磁性材料 放电等离子烧结

领　　域： [一般工业技术]