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首页> 外文会议>International Conference on Manufacturing Engineering and Intelligent Materials >Thermal Magnetic Behavior of Nanocrystalline Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 Ribbons
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Thermal Magnetic Behavior of Nanocrystalline Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 Ribbons

机译：纳米晶Fe_（73.5）CU_1NB_3SI_（13.5）B_9丝带的热磁性行为

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摘要

Thermal magnetic behavior and microstructure of Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 ribbon annealed at different temperatures were investigated. It was indicated that the onset crystallization temperature of the ribbon was around at 530°C and its Curie temperature can be enhanced from 320°C to 385°C by annealing. X-ray diffraction structural analysis showed that a single a-FeSi crystalline phase with grain size about 12 nm was precipitated from amorphous matrix for FeCuNbSiB ribbons annealed between 530°C and 580°C. The α-FeSi phases were octahedral shape confirmed by the morphology simulation and the AFM method. The thermal magnetic behaviors were complicated, as the μ_i can be divided into two modes during increasing temperature, but for the Bs and Ms shown a normal decrease with increasing temperature. The coercive force Hc and remanence ratio α have shown a continuous monotonic decline in single-phase ribbon with increasing temperature, and increased to a max value or a peak and then decreased to zero in biphase ribbons. The thermal behaviors of magnetic properties were controlled by the exchange coupling interaction between the α-FeSi grains and the intergranular amorphous phase. It is important to maintain an efficient exchange coupling interaction between α-FeSi grains and the residual amorphous matrix, and it is necessary to sustain the higher Curie temperature for the application of the FeCuNbSiB ribbons in high temperature by controlling the size and crystallization degree of α-FeSi grains.
机译：研究了在不同温度下退火的Fe_（73.5）Cu_1NB_3SI_（13.5）B_9丝带的热磁性和微观结构。结果表明，带的起始结晶温度在530℃下，通过退火可以从320℃〜385℃提高其居里温度。 X射线衍射结构分析表明，晶粒尺寸约12nm的单个A-Fesi结晶相从非晶基质沉淀出530℃和580℃之间的无定形基质。 α-Fesi阶段是通过形态模拟和AFM方法证实的八面体形状。热磁性行为复杂，因为在升高温度期间μ_i可以分为两种模式，但对于BS和MS表示正常降低随温度的增加。矫顽力HC和剩磁比α在单相带中具有较大温度的连续单调下降，并且增加到最大值或峰值，然后在双相色带中降低至零。通过α-FeSi颗粒与晶间无定形相之间的交换偶联相互作用来控制磁性的热行为。重要的是保持α-Fesi晶粒和残余非晶基质之间有效的交换耦合相互作用，并且需要通过控制α的尺寸和结晶度来维持高温在高温下施加较高的居里温度-fesi谷物。

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