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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Crystallization kinetics of (Ni_0.75Fe_0.25)_78Si_10B_12 amorphous alloy
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Crystallization kinetics of (Ni_0.75Fe_0.25)_78Si_10B_12 amorphous alloy

机译：（Ni_0.75Fe_0.25）_78Si_10B_12非晶态合金的结晶动力学

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摘要

Amorphous ribbon specimen of (Ni0.75Fe0.25)78Si10B12 has been prepared by a single roller melt-spinning technique in the air atmosphere. The crystallization kinetics of the alloy has been investigated using different thermal analysis by means of continuous heating and isothermal heating. The activation energy of the alloy has been calculated by using Kissinger plot method and Ozawa plot method based on differential thermal analysis data, respectively. The products of crystallization have been analyzed by X-ray diffraction. A single phase of γ-(Fe, Ni) solid solution with grain size of about 10.3 and 18.5 nm precipitates in the amorphous matrix after annealing at temperatures 715 and 745 K, respectively. The crystallized phases are γ-(Fe, Ni) solid solution, Fe2Si, Ni2Si, Fe3B and unidentified phase after annealing at 765 K. The details of nucleation and growth during the isothermal crystallization are expatiated in terms of local Avrami exponent and local activation energy.
机译：（Ni0.75Fe0.25）78Si10B12非晶态带状试样是通过单辊熔融纺丝技术在大气中制备的。已经通过连续加热和等温加热的不同热分析方法研究了合金的结晶动力学。基于差热分析数据，分别采用基辛格图法和小泽图法计算了合金的活化能。通过X射线衍射分析了结晶产物。分别在715和745 K的温度退火后，晶粒尺寸分别约为10.3和18.5 nm的γ-（Fe，Ni）固溶体单相析出。结晶相为γ-（Fe，Ni）固溶体，Fe2Si，Ni2Si，Fe3B和在765 K退火后的身份不明的相。等温结晶过程中成核和生长的细节根据局部Avrami指数和局部活化能进行阐述。

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