Preparation of Fe-based monodisperse spherical particles with fully glassy phase
Preparation of Fe-based monodisperse spherical particles with fully glassy phase
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DOI：
10.1016/j.jallcom.2011.02.044
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发表时间：
2011-05-05
影响因子：
6.2
通讯作者：
Kawasaki, Akira
中科院分区：
文献类型：
--
作者：
Miura, Ayako;Dong, Wei;Kawasaki, Akira
在这项研究中，我们使用[（Fe 0.5Co 0.5）（0.75）B 0.2Si 0.05]（96）Nb-4合金制备了所需直径的单分散球形颗粒;颗粒是通过使用我们开发的雾化过程制备的。颗粒具有完美的球形度和窄的粒度分布沿着均匀的组成。随着颗粒直径的增加，发生颗粒从完全玻璃相经由混合相结构到结晶相的相变;在氩气氛中在完全玻璃相中产生的颗粒具有小于300 μ m的直径。这允许估计的固有的临界冷却速率的颗粒与完全玻璃相，R-c：R-c在700-900 K/s的范围内变化，仅取决于合金熔体的初始温度。(C)2011爱思唯尔有限公司版权所有。
In this study, we prepared monodisperse spherical particles of a desired diameter using [(Fe0.5Co0.5)(0.75)B0.2Si0.05](96)Nb-4 alloy; the particles were prepared by using an atomization process developed by us. The particles have perfect sphericity and narrow size distribution along with a homogeneous composition. The phase transitions of particles from the fully glassy phase to the crystalline phase via mixed phase structures occurred as the particle diameter was increased; the particles produced in the fully glassy phase in an argon atmosphere had a diameter of less than 300 mu m. This allowed the estimation of the intrinsic critical cooling rate for the particles with a fully glassy phase, R-c:R-c varied in the range of 700-900 K/s and depended only on the initial temperature of the alloy melt. (C) 2011 Elsevier B.V. All rights reserved.