No abstract

Abstract. Technological advantages and conditions of new quality assurance of coatings and products, provided by silicon nano-carbide, have been ascertained in the course of composite electrodeposition of coatings, structural ceramics patterning, and surface hardening of steels via electro-explosive alloying. Silicon nano-carbide has been recommended to be used as a component of wear and corrosion resistant chromium carbide electrodeposited coatings, which can be operated at high temperatures and used for strengthening tools and equipment including those with a complex microrelief of functional surfaces. Silicon nano-carbide as a component of composite "silicon carbide -boron -carbon" can be applied to produce ceramic half products via solid phase sintering in argon under pressure of 0.1 МPа and temperature 2273 К. Application of silicon nano-carbide in technology of tool steel surface hardening via electroexplosive alloying ensures obtaining of a high micro-hard, wear and heat resistant shielding layer which is about 20 µm deep. IntroductionSilicon carbide production is one of the most important in the structure of contemporary metallurgy. It is a combination of extraordinary thermo physical, mechanical, physical and technical properties of silicon carbide that makes it the unique material for numerous branches of engineering and predetermines such basic applications as couplant materials, ceramics, composite materials, and coatings. World production of silicon carbide is approximately 800 thousand tons annually. The main spheres of silicon carbide application are metallurgy (about 45 % of world demand), abrasive materials production (up to 30 %), and refractory materials (up to 25 %). Product markets of silicon-carbide powder materials: micronized powder with maximum 1 µm particles (so called micronized carbide) used for ceramics and nano-powder with maximum 100 nm particles (so called nano-carbide) used for high quality structural and impact resistant ceramics and galvanics are small-scale in terms of real volume (maximum 1%) but intensively expanding, they also have high money measure. Introduction of silicon carbide in form of nano-carbide opens new horizons of its application, including surface and threedimensional modifying metal alloys and polymers, developing special components of paints etc. [1,2]. Manufacturers of micronized carbide are enterprises of world leader companies "Saint -Gobian" and "Exolon -ESK". Among nano-carbide manufacturers there are research and production companies "Tokyo Tekko Co" (Japan), "Hefei Kaier Nanotechnology  Development Ltd. Co" (China), "NEOMAT Cо" (Latvia) etc.

No abstract

No abstract

No abstract