Functional Coatings
Purpose: protection of the base material against external influences, modification of the surface layer to improve its properties, creation of highly reliable, durable and competitive parts.
Types
- wear resistant against fatigue, cavitation, erosion and other wear;
- antifriction to reduce friction between the contacting surfaces;
- friction for high coefficient of friction and roughness;
- anti-adhesion promoting low adhesion with mating materials;
- adhesive used to improve adhesion between materials;
- corrosion-resistant in air, water, aggressive, active and other environments;
- inert protecting against the effects of chemically active substances;
- heat shielding to reduce heat transfer, and prevent overheating;
- heat resistant maintaining material properties at high temperatures;
- electrically conductive providing the required conductive properties;
- electrically insulating to obtain specified dielectric properties;
- hydrophobic and hydrophilic to change the wetting ability of the surface;
- biocompatible to reduce the risk of medical implant rejection;
- antibacterial glass-ceramic inhibiting the growth of microorganisms;
- special with magnetic, optical, shielding properties, etc.;
- for resizing worn and defective parts.
Electrophysical Application Technologies
Surfacing
Application of coatings with a thickness of more than 1 mm by melting the filler material and melting the surface of the base metal using the heat of a gas flame, electric, plasma arc or laser beam. Process characteristics: equal strength to the base metal, and local coating. Coating materials are based on iron, nickel, cobalt, copper and other alloys.
Spraying
Application of coatings with thickness less than 1 mm using high-temperature jets containing powder particles or drops of molten material by gas-flame, electric arc, plasma (APS), high-speed (HVOF, HVAF) and detonation methods. Process characteristics: bonding strength at normal tear-off - 10-70 MPa, porosity - 0.5-15%, temperature of parts in the process of spraying - less than 150°C. Coating materials are based on iron, nickel, cobalt, copper, titanium alloys, intermetallic compounds, tungsten carbides, ceramics, etc.
Deposition
Deposition of coatings up to 10 μm thick from vapor or gas phase under conditions of treatment by high-energy particles in vacuum and closed chambers or plasma jets at atmospheric pressure and up to 100 μm thick by plasma-pulse deposition. Process characteristics: increased adhesion of coatings to the material due to physical processes of preparation and activation, as well as processes of chemical interaction. Coating materials are metals, carbides, nitrides, oxides, etc.
- Services for parts restoration, coating, microplasma spraying, electro-spark alloying, plasma treatment, protective coatings, and hardening of parts;
- Supply of equipment for applying coatings;
- Delivery of consumables;
- Research and development in the field of surface engineering, tribology of coatings, plasma methods of treatment, selection of optimal coatings and methods of their deposition;
- Training and consultancy in surfacing, spraying, hardening, modification, coating and hardening.
