Alloy composition dependence of formation of porous Ni prepared by rapid solidification and chemical dealloying
Alloy composition dependence of formation of porous Ni prepared by rapid solidification and chemical dealloying
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快速凝固和化学脱合金制备的多孔镍形成的合金成分依赖性
DOI：
10.1016/j.jallcom.2008.04.017
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发表时间：
2009-03
影响因子：
6.2
通讯作者：
Liu, Guodong
中科院分区：
文献类型：
--
作者：
Qu, Yingjie;Zhang, Zhonghua;Qi, Zhen;Bian, Xiufang;Jia, Haoling;Liu, Guodong
本文利用X射线衍射仪、扫描电子显微镜能谱分析和氮气吸附实验研究了合金成分对快速凝固Al-Ni合金化学脱合金化制备多孔镍催化剂的影响。实验结果表明，快速凝固和合金成分对Al-Ni合金的相组成和显微组织有显著影响。快凝Al-20at.%Ni合金由α-Al、NiAl3和Ni2Al3组成，Al-25和31.5at.%Ni合金由NiAl3和Ni2Al3组成。此外，多孔镍催化剂的形成和微观结构取决于熔体快凝Al-Ni合金的组成。Ni催化剂中Ni颗粒的形态和尺寸继承了熔体快凝Al-Ni合金中的颗粒形态和尺寸。快速凝固可以扩大适合于制备镍催化剂的Al-Ni合金的合金成分，并明显加速Al-Ni合金的脱合金化过程。
In this paper, the effect of alloy composition on the formation of porous Ni catalysts prepared by chemical dealloying of rapidly solidified Al–Ni alloys has been investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) analysis and N2adsorption experiments. The experimental results show that rapid solidification and alloy composition have a significant effect on the phase constituent and microstructure of Al–Ni alloys. The melt spun Al–20at.% Ni alloy consists of α-Al, NiAl3and Ni2Al3, while the melt spun Al–25 and 31.5at.% Ni alloys comprise NiAl3and Ni2Al3. Moreover, the formation and microstructure of the porous Ni catalysts are dependent upon the composition of the melt spun Al–Ni alloys. The morphology and size of Ni particles in the Ni catalysts inherit from those of grains in the melt spun Al–Ni alloys. Rapid solidification can extend the alloy composition of Al–Ni alloys suitable for preparation of the Ni catalysts, and obviously accelerate the dealloying process of the Al–Ni alloys.
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影响因子：
4.2
作者：
V. Choudhary;S. K. Chaudhari;A. Gokarn
通讯作者：
V. Choudhary;S. K. Chaudhari;A. Gokarn
影响因子：
2.7
作者：
Pugh, DV;Dursun, A;Corcoran, SG
通讯作者：
Corcoran, SG
DOI：
10.1080/01418618008239360
发表时间：
1980-01-01
期刊：
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES
影响因子：
--
作者：
FORTY, AJ;DURKIN, P
通讯作者：
DURKIN, P
影响因子：
7.3
作者：
Huarong Hu;Fuzhong Xie;Yan Pei;M. Qiao;Shirun Yan;Heyong He;Kangnian Fan;Hexing Li;B. Zong;Xiaoxin Zhang
通讯作者：
Huarong Hu;Fuzhong Xie;Yan Pei;M. Qiao;Shirun Yan;Heyong He;Kangnian Fan;Hexing Li;B. Zong;Xiaoxin Zhang
影响因子：
64.8
作者：
KLEMENT, W;WILLENS, RH;DUWEZ, P
通讯作者：
DUWEZ, P