Electrochemical preparation of NiAl intermetallic compound from solid oxides in molten CaCl2 and its corrosion behaviors in NaCl aqueous solution

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	Electrochemical preparation of NiAl intermetallic compound from solid oxides in molten CaCl2 and its corrosion behaviors in NaCl aqueous solution
	H. Y. Yin ; T. Yu ; D. Y. Tang ; X. F. Ruan ; H. Zhu ; D. H. Wang
刊名	Materials Chemistry and Physics
	2012
卷号	133 期号:1 页码:465-470
关键词	Corrosion test Nickel aluminide Electrochemical reduction Molten salt electrolytic reduction 3-phase interlines calcium-chloride insulator compounds hydrogen-production alloy decomposition methane salts mo
ISSN号	0254-0584
中文摘要	Nickel aluminide powders were prepared by direct electrochemical reduction of solid mixture of NiO-NiAl2O4 (Ni:Al = 1:1 in mol) precursor in molten CaCl2 at 850 degrees C. The reduction process of the solid oxide cathode was investigated by analyzing the intermediate products using X-ray diffraction (XRD) and scanning electron microscopy (SEM). It reveals that nickel is preferentially reduced and it benefits to prevent aluminum leaving from the cathode. The products obtained at the constant cell voltage electrolysis of 3.0 V for more than 4 h were stoichiometric NiAl. The energy consumption could be as low as 6.1 kWh (kg-NiAl)(-1) based on the applied cell voltage and the consumed electrolysis charge. Furthermore, the NiAl powders were made into a dense rod by spark plasma sintering (SPS) technique. The corrosion behaviors of the NiAl rod in 0.5 mol L-1 NaCl aqueous solution at room temperature were investigated by polarization curve and ac impedance measurements. It was found that the NiAl rod had satisfactory anti-corrosion ability in the solution. (C) 2012 Elsevier BM. All rights reserved.
原文出处	://WOS:000302032300070
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/60416]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Y. Yin,T. Yu,D. Y. Tang,et al. Electrochemical preparation of NiAl intermetallic compound from solid oxides in molten CaCl2 and its corrosion behaviors in NaCl aqueous solution[J]. Materials Chemistry and Physics,2012,133(1):465-470.
APA	H. Y. Yin,T. Yu,D. Y. Tang,X. F. Ruan,H. Zhu,&D. H. Wang.(2012).Electrochemical preparation of NiAl intermetallic compound from solid oxides in molten CaCl2 and its corrosion behaviors in NaCl aqueous solution.Materials Chemistry and Physics,133(1),465-470.
MLA	H. Y. Yin,et al."Electrochemical preparation of NiAl intermetallic compound from solid oxides in molten CaCl2 and its corrosion behaviors in NaCl aqueous solution".Materials Chemistry and Physics 133.1(2012):465-470.