Preparation of solid-solution-type Fe–Co nanoalloys by synchronous deposition of Fe and Co using dual arc plasma guns
Preparation of solid-solution-type Fe–Co nanoalloys by synchronous deposition of Fe and Co using dual arc plasma guns
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固溶型Fe的制备
DOI：
10.1039/c5dt02815a
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发表时间：
2015
影响因子：
4
通讯作者：
Miho Yamauchi
中科院分区：
文献类型：
--
作者：
Masaaki Sadakiyo;Minako Heima;Tomokazu Yamamoto;Sho Matsumura;Masashi Matsuura;Sugimoto Satoshi;Miho Yamauchi
采用电弧等离子体沉积法成功地制备了分散性良好的Fe-Co纳米合金。将双弧等离子体枪的同步射击施加到碳载体以制备具有约1：1原子比的固溶体型Fe-Co NAs。 使用X射线粉末衍射，扫描透射电子显微镜（STEM）结合能量色散X射线分析，高分辨率STEM和磁性测量，研究了在氢气气氛下进行还原热处理和不进行还原热处理的合金结构，这表明通过沉积晶粒的热处理形成有序的B2型Fe-Co NAs的高度结晶的球形颗粒。
We succeeded in the efficient preparation of well-dispersed Fe–Co nanoalloys (NAs) using the arc plasma deposition method. Synchronous shots of dual arc plasma guns were applied to a carbon support to prepare the solid–solution type Fe–Co NAs having an approximately 1 : 1 atomic ratio. The alloy structures with and without a reductive thermal treatment under a hydrogen atmosphere were examined using X-ray powder diffraction, scanning transmission electron microscopy (STEM) combined with energy-dispersive X-ray analysis, high resolution STEM, and magnetic measurements, suggesting that highly crystalline spherical particles of ordered B2-type Fe–Co NAs form by the thermal treatment of the deposited grains.