Preparation and Characterization of Ti0.6Cr0.4OxNy Nano-Sized Powder

Ti0.6Cr0.4OxNy bimetallic metal oxynitride nano powder was synthesized by ammonolysis of the nanosized Cr2O3/TiO2 composite powder with n(Ti):n(Cr)=6:4 at 800oC for 8 h. The precursor and the resulting oxynitride were characterized by Auger electron spectroscope (AES), X-ray diffraction analysis (XRD), electron probe microanalysis (EPMA), transmission electron microscopy (TEM), and BET surface area techniques. The result indicated that the precursor was homogenous mixture of Cr2O3 and TiO2 with high BET surface area. The as-synthesized oxynitride powder contains only Ti0.6Cr0.4OxNy with cubic structure. The BET surface area of the oxynitride powder is 37.42 m2/g and the particle size is in the range of 20~30 nm.

[1]  Yaogang Li,et al.  Synthesis of Nanocrystalline Chromium Nitride Powders by Direct Nitridation of Chromium Oxide , 2004 .

[2]  Yaogang Li,et al.  Synthesis and Characterization of Nanocrystalline Niobium Nitride Powders , 2003 .

[3]  Jung Joong Lee,et al.  Structure and properties of (Ti1−xCrx)N coatings produced by the ion-plating method , 2001 .

[4]  R. Ibáñez,et al.  Synthesis of new vanadium–chromium andchromium–molybdenum oxynitrides by direct ammonolysis of freeze-driedprecursors , 2000 .

[5]  J. Nainaparampil,et al.  Formation and characterization of multiphase film properties of (Ti–Cr)N formed by cathodic arc deposition , 1998 .

[6]  F. Lévy,et al.  Sputter deposited chromium nitride based ternary compounds for hard coatings , 1998 .

[7]  J. Grins,et al.  Phases in the Mn-Nb-N-O system, formed by ammonolysis of mixtures of Mn acetate tetrahydrate and a Nb xerogel , 1998 .

[8]  M. Greenblatt,et al.  Synthesis, structure and properties of the oxynitrides SrWO2N and SrMoO2.5N0.5 , 1997 .

[9]  S. H. Elder,et al.  Synthesis of Transition-Metal Nitrides from Nanoscale Metal Particles Prepared by Homogeneous Reduction of Metal Halides with an Alkalide , 1997 .

[10]  J. Grins.  TixTa1 − x(O,N)y phases formed by ammonolysis of Ti-Ta gels: Preparation of an anatase-type solid solution phase TixTa1 − xO1 + xN1 − x, 0.52 ≤ x ≤ 0.87 , 1997 .

[11]  J. Grins,et al.  Synthesis and Structural Characterisation of MnWN2, Prepared by Ammonolysis of MnWO4 , 1995 .

[12]  O. Knotek,et al.  TiCr)N coatings deposited by cathodic vacuum arc evaporation , 1994 .

[13]  F. Disalvo.  Solid-State Chemistry: A A Rediscovered Chemical Frontier , 1990, Science.