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ArticleName Ranking of metallic and non-metallic coatings in the electrochemical surface treatment sector
DOI 10.17580/tsm.2021.04.09
ArticleAuthor Vinokurov E. G., Burukhina T. F., Kuroshev I. S.

D. Mendeleev University of Chemical Technology оf Russia, Moscow, Russia1; A. Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Moscow, Russia2:

E. G. Vinokurov, Professor1, 2, Doctor of Chemical Sciences, e-mail:


D. Mendeleev University of Chemical Technology оf Russia, Moscow, Russia:
T. F. Burukhina, Associate Professor, Candidate of Technical Sciences, e-mail:


Research Institute “Environmental Industrial Policy Centre”, Moscow, Russia:
I. S. Kuroshev, Department Head, e-mail:


The distribution of coatings by the frequency of their application during surface treatment by electrochemical methods is considered. This is important not only for understanding the structure of the electrochemical surface treatment sector, but also for identifying priority areas of scientific and technical research. Nonparametric statistical methods show the uniformity of samples and reveal the relationship between the number of enterprises that sell a certain type of coating, i.e. the frequency of applying a certain type of coating in different countries (USA, Japan, Italy, France, Germany, Great Britain, Spain, Canada, Mexico, Russia, South Africa). The results of testing the hypothesis of a close relationship between the ranks of coatings showed that a significant correlation was found between the distribution of coatings by the frequency of their application (implementation) among all countries. For example, when comparing the United States and Canada, the rank correlation coefficient is 0.62 (the lowest value obtained), which is greater than the calculated critical value of 0.56; when comparing Italy and Spain, the correlation coefficient takes the highest value of 0.97, which is greater than the critical value of 0.19. The results obtained allowed us to use this data to compile a generalized rating of the frequency of use of all coatings based on data from different countries. Based on the analysis, metal coatings can be arranged in a row according to the descending frequency of their application: Cr > Ni > Zn > Cu > Cd. The results of the ranking of coatings showed that the most commonly used electrochemical methods for surface treatment are metal coatings with chromium and nickel, and among the inorganic non – metallic coatings-oxide and then phosphate, which allows us to highlight the research devoted to the application of these coatings as priority areas of scientific and technical research.

keywords Electroplating, surface treatment, metal coatings, ranking, rating, chrome, nickel, copper, zinc, cadmium, gold, silver, phosphating, anodizing

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