Advertisement

Russian Metallurgy (Metally)

, Volume 2019, Issue 13, pp 1410–1413 | Cite as

Elemental Composition and Microhardness of the Coatings Prepared on Faced Aluminum Alloys by Plasma Electrolytic Oxidation in a Silicate–Alkaline Electrolyte

  • A. V. Kolomeichenko
  • I. N. KravchenkoEmail author
COATING DEPOSITION

Abstract

Owing to their high microhardness, corrosion resistance, and heat resistance, the oxide ceramic coatings formed by plasma electrolytic oxidation (PEO) find ever-growing usage for various purposes in many industries and, in particular, for maintenance. One of the methods widely used for the maintenance of aluminum alloys products is argon-arc facing. As the materials for facing, alloys of various grades, such as AK9M2, AK5, and AMr6, are used. The electrolytes widely used for PEO are aqueous silicate–alkaline electrolytes, in particular, KOH—Na2SiO3. To find a correlation between the chemical composition of an oxidized faced aluminum alloy and the microhardness of coatings formed on the alloy, X-ray spectrometry analysis is performed. The performed analysis and the determined distribution of chemical elements across the coating thickness allow us to estimate the mechanism of plasma electrolytic oxidation and the correlation between the electrolyte composition, the chemical composition of faced aluminum alloy, and the element composition of the hardened layer.

Keywords:

aluminum alloy facing oxide ceramic coating plasma electrolytic oxidation silicate–alkaline electrolyte chemical composition of oxidized metal 

Notes

REFERENCES

  1. 1.
    A. V. Kolomeichenko, “Technologies for increasing the working life of machine components by recovery and hardening of working surfaces by combined methods,” Abstract of Doctoral Dissertation in Engineering (All-Russia Research and Technology Inst. of Machine and Tractor Fleet Operation and Repair of the RAAS, Moscow, 2011).Google Scholar
  2. 2.
    A. V. Kolomeichenko, Technologies for Increasing the Working Life of Machine Components by Recovery and Hardening the Working Surfaces using Combined Methods and Micro-Arc Oxidation: Monograph (Izd. Orel GAU, Orel, 2013).Google Scholar
  3. 3.
    A. V. Kolomeichenko, V. N. Logachev, N. V. Titov, and I. N. Kravchenko, “Micro-arc oxidation as the way for increasing the life of machine components upon their production and recovery,” Tekhnika Oborud. Sela, No. 4 (202), 30–35 (2014).Google Scholar
  4. 4.
    A. V. Kolomeichenko, V. N. Logachev, N. V. Titov, and I. N. Kravchenko, “Increase in the reliability of machine components by combined methods in using micro-arc oxidation,” Remont. Vosstanovlenie. Modernizatsiya, No. 9, 17–23 (2014).Google Scholar
  5. 5.
    A. V. Kolomeichenko, I. N. Kravchenko, A. F. Puzryakov, V. N. Logachev, and N. V. Titov, “Technologies for recovery with hardening of machine components in using micro-arc oxidation,” Stroitel. Dorozhye Mashiny, No. 10, 16–21 (2014).Google Scholar
  6. 6.
    A. V. Revenko, X-ray Spectral Fluorescent Analysis of Natural Materials (Nauka Sibirskaya Izdatel’skaya Firma, Novosibirsk, 1994).Google Scholar
  7. 7.
    Yu. A. Kuznetsov, I. N. Kravchenko, A. V. Sirotov, and T. A. Chekhov, “Study of adhesion and wear resistance of coatings formed by a combined technology,” Remont. Vosstanovlenie. Modernizatsiya, No. 7, 28–33 (2018).  https://doi.org/10.31044/1684-2561-2018-0-7-28-33 CrossRefGoogle Scholar
  8. 8.
    V. I. Chernenko, L. A. Snezhko, and I. I. Potapova, Preparation of Coatings by Anode-Spark Electrolysis (Khimiya, Moscow, 1991).Google Scholar
  9. 9.
    I. N. Kravchenko and A. V. Kolomeichenko, “Properties of coatings formed on aluminum alloys by micro-arc oxidation in anode-cathode regime”, Mashinostroenie 3 (1), 62–64 (2015).Google Scholar
  10. 10.
    A. V. Kolomeichenko, I. N. Kravchenko and N. V. Titov, “Device for micro-arc oxidation of working surface of hydraulic cylinder piston,” RF Patent 152032, Byull. Izobret., No. 12 (2015).Google Scholar
  11. 11.
    G. A. Markov, M. K. Mironov, O. G. Potapova, and V. V. Tatarchuk, “Structure of anodic films upon micro-arc oxidation,” Neorg. Mater. 19 (17), 1110–1113 (1983).Google Scholar
  12. 12.
    L. A. Snezhko and Yu. V. Udovichenko, “Properties of anodic spark coatings formed on aluminum alloys from alkaline electrolytes,” Fiz. Khim. Obrab. Mater., No. 3, 93–96 (1989).Google Scholar
  13. 13.
    V. A. Fedorov and N. D. Velikosel’skaya, “Correlation between the phase composition and properties of hardened layer prepared by micro-arc oxidation of aluminum alloys,” Khim. Neft. Mashinostr., No. 3, 29–30 (1991).Google Scholar
  14. 14.
    Yu. A. Kuznetsov and A. Yu. Korovin, “Electrolytes for micro-arc treatment of components,” Mekhanizats. Elektrifikats Sel’skogo Khoz., No. 1, 30–32 (2003).Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Orel State Agrarian UniversityOrelRussia
  2. 2.Russian State Agrarian University Moscow Timiryazev Agricultural AcademyMoscowRussia

Personalised recommendations