Synthesis of New Nanocrystalline Titanium–Niobium Oxynitride Powders
Abstract:New titanium–niobium oxynitride (Ti1−zNbzOxNy) powders were synthesized by ammonolysis of nanosized TiO2/Nb2O5 composite powders at 700°–900°C for 5 h. The products were characterized by X-ray diffraction (XRD), chemical analysis, and transmission electron microscopy. The results indicated that the as-synthesized powders were pure cubic structures with sizes of 30–60 nm. With increasing value of z, XRD peaks of Ti1−zNbzOxNy powders tended to shift toward low 2 angle and the cell parameter showed a linear increase.
Document Type: Research Article
Affiliations: State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China
Publication date: 2008-07-01