Nanocrystalline carbides, nitrides and carbonitrides are being studied today with the aim to develop hard but non-brittle materials. Carbides and nitrides are materials that have desirable properties for a variety of applications. Their key properties are high hardness and strength along with resistance to heat, corrosion and wear.The nonhydrolytic sol-gel process has been employed successfully for the preparation of the nanocomposites TiC/C and TiN/C in form powders. In this study, the results about characterization of nanostructured TiC/C and TiN/C composites elaborated by sol-gel method. The TiC and TiN crystallite sizes and lattice parameters have been determined through X-ray diffraction method by measuring the full width at half maximum (F.W.H.M.) and the intensities of the TiC or TiN powder peaks.
The obtained the TiC/C and TiN/C powders were additionally characterized by the microanalysis (wavelength dispersive and energy dispersive spectroscopies) using an IBEX System Noran Instruments and an Oxford ISIS 300, scanning electron microscopy (JEOL JSM 6100), X-ray diffraction (PHILIPS X’PERT), transmission electron microscopy and electron diffraction (JEOL JEM 1200EX).

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1. Electrical conductivity of TiC and (Ti,W)C ceramic samples
2. Polymer matrix composites with nanoparticles of TiC obtained by a sol-gel method
3. The kinetics of the nanocrystalline iron nitrides reduction
4. Structural characterization of TiC/C and TiN/C films prepared by sol-gel method
5. Study of the Kinetics of the Nitriding of the Nanocrystalline Iron Using the TG and XRD Methods
6. The XRD Method of the Determination of the Size Distribution of the Nanocrystalline Materials