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The introduction of doping elements Al and Si into the coatings allows one to attain a combination of the high characteristics of the hardness and wear resistance with a relatively low friction coefficient. One important factor in increasing of the durability of different products is the provision of thermal stability and oxidation resistance at high temperatures [1, 2]. Therefore, the problem of the development of hard wear-resistant coatings with high thermal stability, heat resistance, and corrosion resistance is very urgent. In this work, the possibility of synthesizing of promising composite materials based on TiCyNz, Ti5Si3, and TiAl3 from the reactionary mixtures in the Ti–Al–Si3N4–C system is shown. As the initial components of the reactionary mixtures we used powders of titanium, aluminum, technical carbon (ash) of above-mentioned grades, and silicon nitride (TU 88-1143-88). The mixtures composition was determined from the accounting of the complete transformation of the initial reagents and the formation of the product with phase composition described by the general formula

intech ebooks

Advanced Ceramic Target Materials Produced by Self-Propagating High-Temperature Synthesis for Deposition of Functional Nanostructured Coatings - Part 1: Four Elements and Less Systems