| Comparison of the Thermomagnetic and Thermal Effects duringNanocrystallization of Amorphous Fe_(76.5-x)Cu_1Nb_xSi_(13.5)B_9 Alloys |
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| 引用本文： | B.Varga and Tak■cs(Dept. of Mechanical Engineering Technology Technical University of Budapest,H- Budapest Bertalan L. utca .,Hungary) A.Lovas and P.Kamasa(Research Institute for Solid State Physics,Hungarian Academy of Sciences,H- Budapest,. Comparison of the Thermomagnetic and Thermal Effects duringNanocrystallization of Amorphous Fe_(76.5-x)Cu_1Nb_xSi_(13.5)B_9 Alloys[J]. 材料科学技术学报, 1998, 14(4): 323-326 |
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| 作者姓名： | B.Varga and Tak■cs(Dept. of Mechanical Engineering Technology Technical University of Budapest H- Budapest Bertalan L. utca . Hungary) A.Lovas and P.Kamasa(Research Institute for Solid State Physics Hungarian Academy of Sciences H- Budapest |
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| 摘 要： |
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| 收稿时间： | 1998-07-28 |
Comparison of the Thermomagnetic and Thermal Effects duringNanocrystallization of Amorphous Fe_(76.5-x)Cu_1Nb_xSi_(13.5)B_9 Alloys |
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| B.Varga and Tak■cs A.Lovas and P.Kamasa(Research Institute for Solid State Physics,Hungarian Academy of Sciences,H- Budapest. Comparison of the Thermomagnetic and Thermal Effects duringNanocrystallization of Amorphous Fe_(76.5-x)Cu_1Nb_xSi_(13.5)B_9 Alloys[J]. Journal of Materials Science & Technology, 1998, 14(4): 323-326 |
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| Authors: | B.Varga Tak■cs A.Lovas P.Kamasa(Research Institute for Solid State Physics Hungarian Academy of Sciences H- Budapest |
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| Affiliation: | B.Varga and Tak■cs(Dept. of Mechanical Engineering Technology Technical University of Budapest,H- Budapest Bertalan L. utca .,Hungary) A.Lovas and P.Kamasa(Research Institute for Solid State Physics,Hungarian Academy of Sciences,H- Budapest, |
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| Abstract: | The results of thermomagnetic (TM) and calorimetric (DSC) measurements have been compared in order to clarify some details of the mechanism of nanophase-formation from Finemet-type precursors with different Nb contents. It was found that the main features of the DSC thermograms (shape, relative separation and amplitude of the exothermic peaks characteristic for the precipitation of the Fe-(Si) solid solution and the transition metal borides) depend mainly on the composition of the precursor glass, and are only slightly affected by the heating rate between 20 and 80 K/min. The amplitude of the uprise of the magnetization in the TM curves (attributed to the precipitation of bcc-Fe(Si) and borides) decreases with increasing Nb-content. The Curietemperature of the precursor glasses. Tc(am1), the remainder amorphous phases, Tc(am2) and the bcc nanophase, Tc(n-Fe) are determined from the thermomagnetic curves. The shape of the TM curves is interpreted on the basis of the reactions describing the crystalIization of the hypo-eutectic Fe-B glasses. |
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