材料科学
退火(玻璃)
合金
复合材料
聚合物
铁磁性
复合数
磁场
凝聚态物理
物理
量子力学
作者
Sung Jae Lee,Yoon Bae Kim,Kyung Sub Lee,Dong Jin Byun,Sang Woo Kim
标识
DOI:10.1002/pssa.200777303
摘要
Abstract We investigated effect of annealing temperature on lattice strain of crystalline FeSiAl alloy powders and related electromagnetic absorption properties for crystalline FeSiAl alloy powder‐polymer composites. The lattice strain of the microforged FeSiAl alloy powder gradually decreased with annealing temperature and highly relieved by annealing treatment at 700 °C. The magnetic saturation significantly increased by the microforging and subsequent annealing treatment due to increase of the stress relaxation. The simulated power loss in the near‐field regime showed high electromagnetic absorption over 31% in above 1 GHz because of annealing effect. From simulation results of magnetic field distributions in the near‐field, the ferromagnetic metal powder‐polymer composite showed excellent electromagnetic absorption in the GHz frequency range. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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