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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。
The Fe78Si13B9 magnetic amorphous alloy powders were prepared by high energy ball milling. The phase composition, glass transition temperature Tg, starting crystallization temperature Tx and crystallization peak temperature Tp of Fe78Si13B9 amorphous alloy powders were analyzed by XRD and DSC. Bulk amorphous magnetic nanocrystalline alloy samples were prepared by sintering (SPS) at different sintering temperatures. The phase transformation properties of sintered bulk samples at different sintering temperatures were analyzed by XRD, SEM, Gleeble3500 and VSM. Appearance, mechanical properties and magnetic properties. The results show that the amorphous phase in the sintered sample begins to crystallize gradually with the increase of the sintering temperature under the sintering pressure of 500MPa. The compactness, compressive strength, microhardness and saturation magnetization of the sintered samples are all significant ; At a sintering pressure of 500MPa and a sintering temperature of 823.15K, an amorphous nanocrystalline magnetic material with a density of 6.6g / cm3, a compressive strength of 1500MPa and a saturation magnetization of 1.3864T was obtained.