Magnetic properties and thermal stability of (Fe,Co)-Mo-B-P-Si metallic glasses
Magnetic properties and thermal stability of (Fe,Co)-Mo-B-P-Si metallic glasses
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DOI：
10.1063/1.3692389
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发表时间：
2012-03
影响因子：
3.2
通讯作者：
S. Bhattacharya;E. Lass;S. Poon;G. Shiflet;M. Rawlings;M. Daniil;M. Willard
中科院分区：
文献类型：
--
作者：
S. Bhattacharya;E. Lass;S. Poon;G. Shiflet;M. Rawlings;M. Daniil;M. Willard
一系列成分为(Fe,Co)78Mo1(B,P,Si)21的铁磁金属玻璃具有良好的热稳定性和软磁性能。使用一次结晶的基辛格分析、时间-温度-变换（TTT）图和过冷液体区域的范围（ΔTx）评估过冷液体温度区域内的热稳定性。无磷合金 Fe78Mo1B15Si6 的活化能 (Ea) 为 414 kJ/mol，ΔTx ∼ 50 K，在 730 K 下约 1 分钟后开始失透。相比之下，含磷合金 Fe78Mo1B13P6Si2 的 Ea 为 440 kJ/mol，ΔTx ∼ 45 K，并开始失透。在 730 K 下 10 分钟后失透。在整个成分范围内都表现出高饱和磁化强度（μ0Ms ∼ 1.45-1.55 T）和低矫顽力（Hc ∼ 20 A/m）。环形磁芯的磁芯损耗测量结果显示，在 1 T、最大感应振幅（正弦波和方波波形下）时，磁芯损耗小于 12 W/cm3。趋势已确定...
A series of ferromagnetic metallic glasses with compositions (Fe,Co)78Mo1(B,P,Si)21 are shown to possess good thermal stability and soft magnetic performance. The thermal stability inside the supercooled liquid temperature region was evaluated using Kissinger analysis of primary crystallization, time-temperature-transformation (TTT) diagrams, and the extent of the supercooled liquid region (ΔTx). The phosphorus-free alloy, Fe78Mo1B15Si6, had an activation energy (Ea) of 414 kJ/mol, ΔTx ∼ 50 K, and began devitrifying after about 1 min at 730 K. By way of comparison, the phosphorus-containing alloy, Fe78Mo1B13P6Si2, had an Ea of 440 kJ/mol, ΔTx ∼ 45 K, and began devitrification after 10 min at 730 K. High saturation magnetization (μ0Ms ∼ 1.45-1.55 T) and low coercivity (Hc ∼ 20 A/m) are demonstrated across the composition range. Core loss measurements of toroidal cores are shown to be less than 12 W/cm3 at 1 T, maximum induction amplitude (under both sinusoidal and square waveforms). Trends were established...