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Home Material Sciences New trends of nanostructure coating development

New trends of nanostructure coating development

Description

Pioneering deposition technology based on the supersonic active material particles – gaseous-vapor flow mixed with the aerosol consist of nano scale liquid metal drops getting from substrate.The technology provides outstanding active material adhesion to substrate, super high efficiency (more than 1 mm per sec.). Suitable for fabrication of epitoxy or porous nanostructure films with the thickness 500 nm – 1 mm.

Process efficiency of nanofilm's manufacturing using deposition methods determines by 2 main factors:

  • Material quantity transfer from evaporator to the substrate
  • Material quantity deposited to the substrate

The main originality of PVDS and HDS technology is that material deposition takes place simultaneously with material transfer and deposition rate increasing.Increasing of material mass transfer achieves by using of high-pressure gas (vapor) flow with particles of initial material in liquid state (PVDS technology) and gas (vapor) flow with particles of initial material in solid state (HDS technology).

Innovative Aspect and Main Advantages

PVDS and HDS technologies allow obtaining of high-density or porous ceramic or ceramic-metal coatings of determined thickness on metal or ceramic substrates. The rate of deposition is more than 100 μm/sec which is in 100–1000 times greater than in existing vacuum PVD, CVD technologies and 10 times greater compare with plasma and coating technologies of material deposition.

When compared to conventional deposition methods the PVDS and HDS enables:

  • The effective deposition of a variety of materials on a variety of substrates;
  • The elimination of the need for binders while maintaining outstanding adhesion;
  • The manufacture of a wide range of film thicknesses with fewer variations in thickness;
  • The creation of nanostructured thin films having a more uniform surface with fewer surface defects;
  • A lower cost of production.

Areas of Application

  • High efficiency thin-film photovoltaic solar cells.
  • Fuel cell components
  • Heat-resistant and high-temperature coatings
  • Protective coatings

Samples of metal%ceramic coatings
Fig. 1 Samples of metal-ceramic coatings

Structure of coating
Fig. 2 Structure of coating

Stage of Development

Patented

Contact Details

National Metallurgical Academy of Ukraine
Yevgen Kalynushkin
49006, Ukraine, Dnepropetrovsk, Gagrina ave.4,
Phone: 38-0562-385635
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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