The nanostructure and hydrogenation reaction of Mg_(50)Co_(50) BCC alloy prepared by ball-milling

J Matsuda; H Shao; Y Nakamura; E Akiba

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The nanostructure and hydrogenation reaction of Mg_(50)Co_(50) BCC alloy prepared by ball-milling

机译：球磨Mg_（50）Co_（50）BCC合金的纳米结构和加氢反应

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Mg_(50)Co_(50) alloy before and after hydrogenation was investigated by means of transmission electron microscopy (TEM). Mg_(50)Co_(50) alloy before hydrogenation was found to contain crystals not larger than 5 nm in size. Selected-area electron diffraction patterns (SAEDPs) revealed that these nanocrystals have a body-centered cubic (BCC) structure with a lattice parameter of about 0.3 nm. Distribution of Mg and Co elements in the Mg_(50)Co_(50) alloy was uniform, indicated by energy dispersive x-ray spectroscopy (EDS) analysis. Crystallization and decomposition occurred in the Mg_(50)Co_(50) alloy during hydrogenation. A large number of crystals larger than 10 nm were observed in the hydrogenated sample. The SAEDPs showed polycrystalline rings corresponding to the BCC phase and the Co metal phase. The existence of Mg-rich Mg-Co crystals and Co particles was also confirmed by TEM-EDS analysis.

机译：利用透射电子显微镜（TEM）研究了氢化前后的Mg_（50）Co_（50）合金。发现氢化之前的Mg_（50）Co_（50）合金含有不大于5 nm的晶体。选定区域电子衍射图（SAEDPs）显示，这些纳米晶体具有体心立方（BCC）结构，其晶格参数约为0.3 nm。 Mg_（50）Co_（50）合金中Mg和Co元素的分布均匀，这通过能量色散X射线光谱（EDS）分析表明。在氢化过程中，Mg_（50）Co_（50）合金发生结晶和分解。在氢化样品中观察到大量大于10nm的晶体。 SAEDP显示出对应于BCC相和Co金属相的多晶环。 TEM-EDS分析也证实了富含Mg的Mg-Co晶体和Co颗粒的存在。

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《Nanotechnology》 |2009年第20期|共5页
作者
J Matsuda; H Shao; Y Nakamura; E Akiba;
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正文语种 eng
中图分类 710C0161;
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transmission; hydrogenation; microscopy;

机译：透射;氢化;显微镜;

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1. The nanostructure and hydrogenation reaction of Mg_(50)Co_(50) BCC alloy prepared by ball-milling [J] . J Matsuda, H Shao, Y Nakamura, Nanotechnology . 2009,第20期

机译：球磨Mg_（50）Co_（50）BCC合金的纳米结构和加氢反应
2. Insight into the Hydrogenation Properties of Mechanically Alloyed Mg_(50)Co_(50) from the Local Structure [J] . Hyunjeong Kim, Jin Nakamura, Huaiyu Shao The journal of physical chemistry, C. Nanomaterials and interfaces . 2011,第41期

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The nanostructure and hydrogenation reaction of Mg_(50)Co_(50) BCC alloy prepared by ball-milling

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