Preparation of niobium aluminides intermetallic powders by sodiothermic reduction process

Na Wang, Qin Chen Hu, Yao Zhang, Hong Min Zhu

研究成果: Article査読


The niobium aluminides intermetallic particles were prepared by a sodiothermic reduction process using Nb2O5 and NaAlO2 as raw materials, NaCl and CaCl2 as the diluents and sodium as a reducing agent. The phases, morphology and particle size of niobium aluminides intermetallic powders depending on the molar ratio of oxygen in raw materials and CaCl2 in the molten salt, the atomic ratio of niobium and aluminum in raw materials and premelting time in molten salts were analyzed. The NbAl3 and Nb3Al particles are obtained at 680°C and 750°C for the 6.0 h premelting time, respectively, and the particle size of NbAl3 and Nb3Al powders is about 50~260 nm and 30~180 nm. Besides, the purity of the niobium aluminides intermetallics powders was increased along with the increasing of the premelting time.

ジャーナルFenmo Yejin Cailiao Kexue yu Gongcheng/Materials Science and Engineering of Powder Metallurgy
出版ステータスPublished - 2013 4月

ASJC Scopus subject areas

  • 金属および合金


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