TY - JOUR
T1 - Direct synthesis of Nb-Al intermetallic nanoparticles by sodiothermic homogeneous reduction in molten salts
AU - Wang, Na
AU - Du, Chao
AU - Hou, Jungang
AU - Zhang, Yao
AU - Huang, Kai
AU - Jiao, Shuqiang
AU - Zhu, Hongmin
N1 - Funding Information:
This work was supported by National Science Foundation of China (No. 50934001 , 21071014 , 51102015 and 51004008 ), the Fundamental Research Funds for the Central Universities (No. FRF-AS-11-002A , FRF-TP-12-023A , FRF-MP-09-006B ), Research Fund for the Doctoral Program of Higher Education of China (No. 20090006110005 ), National High Technology Research and Development Program of China (863 Program, No. 2012AA062302 ), Program of the Co-Construction with Beijing Municipal Commission of Education of China (No. 00012047 and 00012085 ) and the Program for New Century Excellent Talents in University ( NCET-11-0577 ).
PY - 2013
Y1 - 2013
N2 - Nb-Al intermetallic nanoparticles were directly synthesized via sodiothermic reduction process in molten salts using NbCl5 and AlCl3 as the raw materials. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The NbCl5 and AlCl3 were dissolved in LiCl-KCl-CaCl2 or LiCl-KCl-NaCl-CaCl2 molten salts forming a homogeneous system. It was found that a series of intermetallic nanoparticles, such as Nb3Al, Nb2Al, NbAl3 and Nb2Al/NbAl3, were successfully synthesized at low temperature of 350-500 C using the homogeneous molten salt systems. The phase transformations of Nb3Al, Nb2Al and NbAl3, were achieved via the controllable variation of molar ratio of Nb to Al. Furthermore, the influence of the reaction temperature on the particle size of the intermetallic nanoparticles was also investigated.
AB - Nb-Al intermetallic nanoparticles were directly synthesized via sodiothermic reduction process in molten salts using NbCl5 and AlCl3 as the raw materials. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The NbCl5 and AlCl3 were dissolved in LiCl-KCl-CaCl2 or LiCl-KCl-NaCl-CaCl2 molten salts forming a homogeneous system. It was found that a series of intermetallic nanoparticles, such as Nb3Al, Nb2Al, NbAl3 and Nb2Al/NbAl3, were successfully synthesized at low temperature of 350-500 C using the homogeneous molten salt systems. The phase transformations of Nb3Al, Nb2Al and NbAl3, were achieved via the controllable variation of molar ratio of Nb to Al. Furthermore, the influence of the reaction temperature on the particle size of the intermetallic nanoparticles was also investigated.
KW - A. Nanostructured intermetallics
KW - A. Niobium aluminides
KW - C. Reaction synthesis
KW - F. Diffraction
KW - F. Electron microscopy, scanning
KW - F. Electron microscopy, transmission
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U2 - 10.1016/j.intermet.2013.07.005
DO - 10.1016/j.intermet.2013.07.005
M3 - Article
AN - SCOPUS:84881298619
SN - 0966-9795
VL - 43
SP - 45
EP - 52
JO - Intermetallics
JF - Intermetallics
ER -