Metal surface treatment in a low-frequency exposure field

Menshikov

Savina

et al. 2020

Metal structures, equipment, ships, port and hydraulic structures, other objects operating in river or sea water, after some time are exposed to the inhabitants of the aquatic environment. The surface is overgrown with algae; various small marine organisms attach to it. Fouling with algae and microorganisms becomes the reason for the intensification of metal corrosion processes in an aggressive aqueous medium, which leads to premature destruction of objects.Bio-fouling creates a number of problems for operation -from reducing the fuel efficiency to losing the design. Only recorded losses from biodeterioration account for 5-7% of the value of world industrial products, and they are gradually growing.

Section: )mentioning

confidence: 99%

General Approaches to Improving Anticorrosion and Antifouring Coatings

Menshikov

Savina

et al. 2020

“…To conduct experiments, an Electromechanical installation was created, which is an oscillating system (oscillatory circuit) [1][2][3][4][5][6][7], consisting of an oscillating mass, elastic and dissipative elements. The characteristics of the experimental installation are shown in Table 1.…”

Section: Experimental Partmentioning

confidence: 99%

Studying the Influence of Low-Frequency Axial Fluctuations During Surface Treatment of Metals

Bogatov

Savina

et al. 2020

Currently, it is known that infrasonic axial fluctuations affect various properties of metals. We conducted experimental studies to study the resistance of metals to corrosion in the field of infrasonic axial impacts. The subject of the study was the change in the properties of the surface of metals. It is established that when exposed to low frequency axial fluctuations in the range of 2-60 Hz occur changes in the processes of surface treatment of metals. Experimentally, optimal frequencies were found at which the effect of low frequency fluctuations becomes max. At the same time, each system under study has its own optimal experimentally detected frequency. Absorption spectroscopy is used to obtain results for the next systems: HCl -H2O2 -Cu; FeCl3 -Cu; KI -I2 -Cu; HCl -H2O2 -Al; KI -I2 -Fe.The use of the experimentally developed method of low frequency axial action allows increasing the speed of metal surface treatment up to 5 times. The study of the interaction of metals with electrolyte solutions in the field of low frequency fluctuations allows us to create new measures of protection against corrosion, as well as to develop new technological processes and solutions for surface treatment of metals and alloys for further implementation in the production process.

“…According to NPO «Varnish-and-Coatment» data, adhesion declines in PC film because of inside tensions after prolonged low temperature exposure, as a result, PC can crack and peel off. These kinds of destruction are not typical for PC exploited at the area of Western European and other countries with temperate climate [8][9][10]. Moreover, ISO 12944:1998 has impact only on PC covering steel and galvanized steel.…”

mentioning

confidence: 98%

Harmonization of technical demands to paint coatings as a component of competitiveness increase on the international market

Menshikov

Il’Darkhanova

et al. 2020

The specific feature of modern Russian paintwork material (PWM) market is an import share rise along with foreign manufactures extensive expansion. Russian market range of PWM contents above 3000 items, considering both PWM being used in household and foreign products. Import products are 25-30% of Russian PWM market volume. High level of rivalry, marketing battle between foreign and domestic manufactures is common for it. Major PWM exporting countries in Russia are: German (14% of total amount), Finland (11%), Belarus (9,7%), Estonian (9%), USA(8,9%), Korea (7,5%), Lithuania (7%). According to «Symbol Marketing» agency data, Tikkurila (Finland), AkzoNobel (Sweden), Meffest AG (German), PPG-Helios (Italy-Slovenia), BASF (German), Jobi (German), Teknos (Finland), Marshall (Turkey), DuPont (USA) lead among the manufacturing companies exporting their PWM in Russia. The main domestic PWM competitiveness rise condition is establishment of common quality, endurance, ecological safety and evaluating methods standards accepted as in Russia so in other countries. This scientific research made for PWM manufacturers and consumers solves International Organization for Standardization (ISO) and Russian National Standart (GOST) interaction problem in order to standardize Russian PWM output and increase its competitiveness at the international market.