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铁钴基纳米晶软磁性材料具有高居里温度的非晶纳米晶两相结构,通过两相结构的匹配完成纳米晶粒间的磁矩交换耦合,使得材料在高温环境下具备优异的软磁性能。通过采用 VSM、TEM、XRD 等技术对材料软磁性能、组织结构以及软磁性能的热稳定性的研究与分析,优化了 FeCoHfBCu 合金成分。试验表明(Fe0.6Co0.4)86Hf7B6Cu1合金在500～600 ℃的工作温度区间范围内具备最佳的饱和磁化强度和较低矫顽力,并且 550 ℃条件下具有优异的软磁性能热稳定性。该材料是高温软磁应用领域的重要候选材料。
The iron-cobalt-based nanocrystalline soft magnetic material has a high Curie temperature amorphous nanocrystalline two-phase structure, through the matching of two-phase structure to complete the magnetic moment exchange coupling between the nanocrystalline grains, so that the material has excellent soft magnetic properties under high temperature environment . The composition of FeCoHfBCu alloy was optimized through the research and analysis of the soft magnetic properties, microstructure and thermal stability of the soft magnetic properties by using VSM, TEM, XRD and other techniques. The results show that (Fe0.6Co0.4) 86Hf7B6Cu1 alloy has the best saturation magnetization and low coercive force in the operating temperature range of 500 ~ 600 ℃, and has excellent soft magnetic properties at 550 ℃. . This material is an important candidate for high temperature soft magnetic applications.