Nanocrystalline FeSiBNbCu alloys: Differences between mechanical and thermal crystallization process in amorphous precursors

机译：纳米晶FeSiBNbCu合金：非晶态前驱体的机械结晶和热结晶过程之间的差异

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Nanocrystalline magnetic particles obtained by high energy ball milling of FeSiBNbCu alloy were prepared from rapidly quenched ribbons as a starting material. Structural characterization was made by using X-ray diffraction (XRD), differential scanning calorimetry (DSC), atomic force microscopy (AFM) and Mossbauer spectroscopy. The structural changes observed in this amorphous material suggest that nanocrystallization process takes place in a different way from the one induced by thermal treatments. Our different studies reveals that after short grinding times (up to 40 h) the material is composed by a two phase system of very fine nanocrystals embedded in a residual amorphous phase, while for largest periods of milling (from 140 h) the sample consists of a very fine nanocrystalline phase with a large fraction of grain boundary.

机译：通过快速淬火薄带作为原材料，制备了通过高能球磨FeSiBNbCu合金获得的纳米晶磁性颗粒。通过使用X射线衍射（XRD），差示扫描量热法（DSC），原子力显微镜（AFM）和Mossbauer光谱学进行结构表征。在这种无定形材料中观察到的结构变化表明，纳米晶化过程的发生方式与热处理引起的方式不同。我们的不同研究表明，经过短时间的磨削（长达40小时），该材料由两相系统组成，该系统由嵌入残余非晶相中的非常细的纳米晶体组成，而在最长的研磨时间（从140小时开始）中，样品由具有很大一部分晶界的非常细的纳米晶相。

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来源
《International Symposium on Metastable and Nano-Materials(ISMANAM-2005); 20050703-07; Paris(FR)》|2005年|P.199-202|共4页
会议地点 Paris(FR)
作者
M. Lopez; P. Mann; P. Agudo; I. Carabias; J. de la Venta; A. Hernando;
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作者单位

Institute de Magnetismo Aplicado, P.O. Box 155, 28230 Las Rozas, Spain;

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原文格式 PDF
正文语种 eng
中图分类有色金属冶炼;
关键词
ball milling; mechanical nanocrystallization; nanoparticles; grain boundary;

机译：球磨；机械纳米结晶；纳米粒子；晶界;

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3. Nanocrystalline FeSiBNbCu alloys: Differences between mechanical and thermal crystallization process in amorphous precursors [J] . M. Lopez, P. Marin, P. Agudo Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics . 2007,第0期

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Nanocrystalline FeSiBNbCu alloys: Differences between mechanical and thermal crystallization process in amorphous precursors

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