Laboratory of                                                 

Plasma–Electrolytic Process

Practical workings


Patents concerning the coating formation technique

When it was the laboratory of protective coatings (before 2003)

  1. Patent ¹ 1783004 of Russian Federation. The method of microarc oxidation of valve metals and their alloys / Rudnev V.S., Gordienko P.S., Kurnosova A.G., Orlova T.I. – Patented 17.10.89. Published 23.12.92. – Bulletin ¹47.
  2. Patent ¹ 2061107 of Russian Federation. The method of microarc obtaining of the protective films on the surface of metals and their alloys / Rudnev V.S., Gordienko P.S., Kurnosova A.G., Orlova T.I. – Patented 17.07.91. Published 27.05.96. – Bulletin ¹15
  3. Patent ¹ 2066716 of Russian Federation. The way of obtaining of colored coatings on valve metals and alloys / Yarovaya T.P., Rudnev V.S., Gordienko P.S., Nedozorov P.M. – Patented 05. 03.93. Published 20.09.96. – Bulletin ¹26
  4. Patent ¹ 2072000 of Russian Federation. The way of variegated coloring of the articles from aluminum and its alloys / Rudnev V.S., Gordienko P.S., Yarovaya T.P., Nedozorov P.M., Gnedenkov S.V., Khrisanfova O.A. – Patented 29.11.93. Published 20.01.97. – Bulletin ¹2
  5. Patent ¹ 2096534 of Russian Federation. The way of obtaining of optically black protective coatings on valve metals / Yarovaya T.P., Rudnev V.S., Gordienko P.S., Nedozorov P.M. – Patented 18.07.96. Published 20.11.98. Bulletin ¹32

    When it became the laboratory of Plasma – Electrolytic Process (since 2003)

  6. Patent ¹ 2263163 of Russian Federation. The way of plasma-electrolytic oxidation of valve metals and alloys/ Rudnev V.S., Yarovaya T.P., Nedozorov P.M. – Patented 30.07.2004. Published 27.04.2005
  7. Patent ¹ 2263164 of Russian Federation. The way protective coatings deposition on aluminum and its alloys/ Rudnev V.S., Yarovaya T.P., Nedozorov P.M., Boguta D.L. - Patented 10.08.2004. Published 27.04.2005
  8. Patent ¹ 2288973 of Russian Federation. / Kondrikov N.B., Shchitovskaya E.V., Vasilyeva M.S., Rudnev V.S., Tyrina L.M. - Patented 02.06.2005. Published 10.12.2006. Bulletin ¹ 34.
  9. Patent ¹ 66458 of Russian Federation. / Kabanov V.V., Rudnev V.S. - Patented 28.04.2007. Published 10.09.2007.
  10. Patent ¹ 2323278 of Russian Federation. Method for depositing on titanium and its alloys zirconium –containing coating / Rudnev V.S., Jarovaja T.P., Kilin K.N. - Patented 23.08.2006. Published 27.04.2008. Bulletin ¹12.
  11. Patent ¹ 2342999 of Russian Federation. / Rudnev V.S., Tyrina L.M., Lukiyanchuk I.V. - Patented 11.07.2007. Published 10.01.2009. Bulletin ¹1.
  12. Patent ¹ 2367519 of Russian Federation. / Rudnev V.S., Yarovaya T.P., Nedozorov P.M. - Patented 19.05.2008. Published 20.09.2009. Bulletin ¹26.
  13. Patent ¹ 2371390 of Russian Federation. Method of obtaining thin layers of zirconium pyrophosphate / Rudnev V.S., Jarovaja T.P., Kilin K.N. - Patented 03.04.2008. Published 27.10.2009.
  14. Patent ¹ 2417123 of Russian Federation. / Steblevskaya N.I., Medkov M.A., Belobeletskaya M.V., Rudnev V.S., Lukiyanchuk I.V. - Patented 23.10.2009. Published 27.04.2011. Bulletin ¹12.
  15. Patent ¹ 2420614 of Russian Federation. / Rudnev V.S., Lukiyanchuk I.V., Ustinov A.U.- Patented 03.12.2009. Published 10.06.2011.

Workings, offered to use

1. The technique (Patent ¹ 1783004 of Russian Federation, 1992) is used for preparation of the aluminum and titanium constructions, including those ones, which are used in sea-water, for painting, before lacquers and polymers application. Since 1989 the industrial sector has been exploited in SCB SAMI of Far-Eastern Branch of Russian Academy of Sciences. The change of the chemical oxidation into the new one results in the twice increase of useful life of the constructions in sea conditions; lowers pollution of the environment, fig.1. There are the complete set of the necessary technical documentation, the results of thorough tests of the coatings and sanitary investigations of electrolyte and its fumes..

Alloy B95. Year’s tests in sea-water, crevice corrosion modeling. a) without coating b) with one.

Some articles with protective layers (oxide layer + paint) on the vessel deck (this illustration was taken from the prospectus of SCB SAMI Far-Eastern Branch of Russian Academy of Sciences).

A part of the working sector in SCB SAMI Far-Eastern Branch of Russian Academy of Sciences (this illustration was taken from the prospectus of SCB SAMI Far-Eastern Branch of Russian Academy of Sciences)

2. The use of anodic-cathode alternating current polarization let to reduce power-consumption of the process, described above, twice and more, fig.2 (Patent ¹ 2263163 of Russian Federation, 2004).

Power-consumption of the process at the obtaining the layers on aluminum alloy AMtsN: (1) at direct current, (2) at anodic-cathode alternating current polarization.

3. The method of anodic-cathode alternating current obtaining of hard, wear resistant layers on aluminum with the thickness from 30 to 80 in electrolyte on the basis of M2B4O7, where M=K or Na (Patent ¹ 2263164 of Russian Federation, 2004) has been developed.

As the anodic and anodic-cathode current source, computer-controlled multifunctional thyristor set assembled on base of commercial set ‘TER-100/460R-UHL4’ (Russia) in “Fleron” (company with limited liability, Vladivostok) is used.

Some long-term research effort and experimental development

  1. The method that let us to get (in one electrolyte, changing the treatment conditions) precoat for paint and polymers, corrosion-resistant and wearproof hard layers both on aluminum and titanium alloys. (The microhardness of coatings on aluminum alloys is 18-22 GPa, one on titanium alloys is 10 GPa. The layers thickness is 20-80 mkm.)
  2. The increase of the protective properties by means of the additional treatment (annealing, sealing etc.)
  3. Layers with bactericidal and fungicidal properties.
  4. Catalytic activity layers (the treatment of piston crowns in order to increase completeness of fuel combustion and decrease carbonization, the afterburning, purification of exhausts, conversion CO into CO2), oxide and oxide-phosphates catalyst carriers on Al, Ti, Zr supports and etc.