摘要
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。
FeCo-based nanocrystalline soft magnetic materials have an amorphous and nanocrystalline two-phase structure with high Curie temperature. The exchange coupling among nanocrystals happened through the laminar amorphous phase. VSM, TEM, XRD were used to investigate the soft magnetic properties, structure and thermal stability. (Fe0.6Co0.4)86Hf7B6Cu1 alloy was optimized as the candidate of soft magnetic materials for elevated temperature applications, which exhibits both higher saturation magnetization at 500～600℃ and lower coercivity at 550 ℃ for long time isothermal annealing.
出处
《中国表面工程》
EI
CAS
CSCD
2004年第5期1-4,10,共5页
China Surface Engineering
基金
欧盟第5框架项目(G5RD-CT-2001-03009)
中国国家自然科学基金重点项目(50235030).
关键词
纳米晶软磁材料
矫顽力
饱和磁化强度
热稳定性
nanocrystalline soft magnetic materials
coercivity
saturation magnetization
thermal stability
