A coating is a covering layer of a particular material that is applied to the surface of an object (the substrate). The purpose of applying the coating may be functional, decorative, or both. The functional coatings are typically deposited for protection of the substrate material (hard coatings) or to improve its mechanical, tribological or other physical or chemical properties. Thickness of a coating is an important parameter which affects properties of the coating to a great extent. The thickness of the hard protective and tribological coatings produced at STATON,s.r.o., is about 1 to 5 micrometers which is about 1% of the thickness of a human hair.
The coatings are deposited by plasma techniques in vacuum chambers which guarantee clean processes without presence of any impurities from ambient atmosphere which can harm the quality of the coating. And what more, vacuum techniques are environmentally friendly since no toxic waste is produced. The properties of a coating are further dependent on the structure and the composition of the coating. These can be tailored according to the requirements of any particular application.
Types of coatings produced at STATON,s.r.o.
STATON,s.r.o., produces various types of advanced coatings which differ according to the nature of their application. We offer coatings with various properties than can be further modified to suit particular requirements of our customers.
- tools – wear and abrasion resistant hard coatings (e.g. nitrides, carbides, borides)
- bearings – tribological protective coatings (e.g. W–DLC, MoS2)
- coin dies
Materials for deposition of coatings
- arc evaporation targets: Ti, Al, Cr, Nb, Zr
- sputtering targets: Ti, Al, Cr, Mo, Nb, V, W, Si, TiAl, TiB2
- gases: Ar, N2, O2, C2H2
- single elemental content
- multicomponent monolayer (mixture of elements in a single deposition step)
- superlattices (consecutive deposition of monolayers of different components)
- gradient (continuous change in deposition parameters)
- vacuum cathodic arc evaporation
- magnetron sputtering
- combination of evaporation and sputtering
Nanostructured multilayer coatings: a schematic diagram of a multilayer coating with layers deposited for different purposes (left) and a view of a multilayer coating with repeating bilayer structure from an electron microscope.
Basic types of coatings offered
STATON,s.r.o., offers several different PVD coatings specially developed for various applications. Hard PVD coatings reduce wear and friction and thus enhance productivity, tool lifetime and quality of machining. Some of the offered wear and resistant hard PVD coatings are listed in the table below together with the description of the coatings most preferred by our customers. The full list of offered PVD coatings can be found on a separate sheet or on our website.