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Papers by Alexander Zhirov

Journal of Surface Investigation X-ray Synchrotron and Neutron Techniques

The results of an experimental study of the anodic plasma-electrolytic treatment of steel samples... more The results of an experimental study of the anodic plasma-electrolytic treatment of steel samples with a graphite coating are presented. The effect of the coating thickness, duration and temperature of the treatment on the thickness, elemental composition, and microhardness of the cemented layer is studied.

Advanced Materials Research, 2013

ABSTRACT Review of results in anodic plasma electrolytic saturation of structural steels with nit... more ABSTRACT Review of results in anodic plasma electrolytic saturation of structural steels with nitrogen and carbon in the aqueous electrolytes containing ammonia chloride and required additional constituents is presented. Proposed nitrohardening technology of the medium-carbon steels includes the short-time nitrogen saturation with the following hardening in the electrolyte. Short-time anodic carburizing possibility of the low-carbon steels with following hardening is shown. Treatment samples microhardness is 630±30 HV, their surface roughness decreases from 1.2 to 0.22 μm.

Surface Engineering and Applied Electrochemistry, 2013

It is shown that films of titanium dioxide obtained by anodic plasma electrolytic processing of c... more It is shown that films of titanium dioxide obtained by anodic plasma electrolytic processing of commercial titanium in an aqueous solution of ammonium chloride are photosensitive. Incident photon to charge carrier efficiency (IPCE) in the near ultraviolet (366 nm) reached 8.5%. Magnitude of the photocur rent generated by the films obtained under optimum processing conditions decreases no more than 20% at the transition from the ultraviolet to the mixed light.

Surface Engineering and Applied Electrochemistry, 2008

The possibility to increase the corrosion stability of steel 45 by its anodic electrothermochemic... more The possibility to increase the corrosion stability of steel 45 by its anodic electrothermochemical oxidation in aqueous solutions of ammonium acetate (10-15%) is shown. Tests of oxidized samples in a sulfuric acid solution (0.5 M) allowed finding a shift of their potential to the positive range (up to 0.3 V) with respect to the platinized electrode, which was accompanied by a decrease in the conductivity of the oxide layer. The minimum corrosion rate [0.7 g/(m 2 day)] in the 5% NaCl solution was obtained for the specimen oxidized at a voltage of 200 V.

Surface Engineering and Applied Electrochemistry, 2012

ABSTRACT The possibility of improving roughness of mild steel after its anodic cementation at red... more ABSTRACT The possibility of improving roughness of mild steel after its anodic cementation at reduced content of ammonium chloride and glycerine in working electrolyte is shown. The method of parts flow-around with distributed longitudinal streams is used, allowing to reduce thickness dispersion of case-hardened layer vertically. Examples of practical application of anodic cementation are given.

Protection of Metals and Physical Chemistry of Surfaces, 2014

ABSTRACT This study is devoted to the effect of the oxide layer formed upon anodic plasma-electro... more ABSTRACT This study is devoted to the effect of the oxide layer formed upon anodic plasma-electrolytic carburization on the rate of carbon diffusion in low carbon steels upon application of an aqueous solution of ammonium chloride with glycerol as a working electrolyte. Approximate determinations of carbon distribution in the surface layer of low carbon steels after their anodic plasma-electrolytic carburizing confirmed the hypothesis that there is deceleration of carbon diffusion by the oxide layer. Different structures of the oxide layer were revealed that depend on the method of sample cooling after their saturation with carbon in an anodic vapor-gas envelope. A possibility of controlling the thickness of the oxide layer was shown, as well as clarification of the surface by the choice of an electrolyte and treatment mode, was shown. A reduction in the roughness of the carburized surface from 0.62 ± 0.02 to 0.22 ± 0.02 μm was revealed.

Protection of Metals and Physical Chemistry of Surfaces, 2010

ABSTRACT The studies were devoted to the effect of concentrations of ammonium chloride and carbon... more ABSTRACT The studies were devoted to the effect of concentrations of ammonium chloride and carbon-containing additives on the depth of martensite layer formed after anode carburization of low-carbon steels. The carbon potentials of electrolytes were determined to contain ammonium chloride (10 wt %) and 10 wt % of a carbon-containing component (acetone, glycerin, ethanol, propanol-2, ethylene glycol, saccharose). Nuclear proton backscatterring was applied to determine the concentration distribution of oxygen, carbon, and nitrogen in the surface layer of some structural steels modified by heating in electrolyte containing 10% ammonium chloride and 20% of carbamide. The capability of surface strengthening of 12Kh18N10T steel due to its carburization without the hazard of intercrystalline corrosion was demonstrated.

Interview with famous Armenian radio broadcaster Gore Grigorian on how the media affect people an... more Interview with famous Armenian radio broadcaster Gore Grigorian on how the media affect people and how they can make their lives better. Gor Grigoryan: "Change yourself, I do not cheat children" A good friend of Omsk Festival "TIME" Armenian TV and radio Gor Grigoryan told GLAGER.RU, how to make social events reached their goal, the TV was not lying, and evil no longer multiply. In contemporary advertising there is a fairly clear distinction between the festival projects and those projects that really work, but do not look so bright. What to do with this division?-In fact, we must clearly understand that any advertising campaign-political, social or commercial-consists of two parts: the idea, creative, production-and the life of this project on TV, radio, outdoor advertising, online, in the form of viral advertising, flash mob, in general, that it is necessary to bring this idea to the masses. The ultimate essence rests on such a thing: the media in Russia, Aremenii, in Europe, in the United States have less trust and less trust. Unfortunately. The media, unfortunately, all too often carry someone's order: Orders bosses, government orders, orders the owners of various companies. Today, the only media channel that inspires confidence, rather than rejection, people become social networks. If the current PSAs will be sharpened by them, it will have more success. Today, less to think about direct advertising, and speak directly into the forehead that "drugs-it is bad" and "Smoking kills", and think more about how to talk with the audience on her language.

Journal of Surface Investigation X-ray Synchrotron and Neutron Techniques

The results of an experimental study of the anodic plasma-electrolytic treatment of steel samples... more The results of an experimental study of the anodic plasma-electrolytic treatment of steel samples with a graphite coating are presented. The effect of the coating thickness, duration and temperature of the treatment on the thickness, elemental composition, and microhardness of the cemented layer is studied.

Advanced Materials Research, 2013

ABSTRACT Review of results in anodic plasma electrolytic saturation of structural steels with nit... more ABSTRACT Review of results in anodic plasma electrolytic saturation of structural steels with nitrogen and carbon in the aqueous electrolytes containing ammonia chloride and required additional constituents is presented. Proposed nitrohardening technology of the medium-carbon steels includes the short-time nitrogen saturation with the following hardening in the electrolyte. Short-time anodic carburizing possibility of the low-carbon steels with following hardening is shown. Treatment samples microhardness is 630±30 HV, their surface roughness decreases from 1.2 to 0.22 μm.

Surface Engineering and Applied Electrochemistry, 2013

It is shown that films of titanium dioxide obtained by anodic plasma electrolytic processing of c... more It is shown that films of titanium dioxide obtained by anodic plasma electrolytic processing of commercial titanium in an aqueous solution of ammonium chloride are photosensitive. Incident photon to charge carrier efficiency (IPCE) in the near ultraviolet (366 nm) reached 8.5%. Magnitude of the photocur rent generated by the films obtained under optimum processing conditions decreases no more than 20% at the transition from the ultraviolet to the mixed light.

Surface Engineering and Applied Electrochemistry, 2008

The possibility to increase the corrosion stability of steel 45 by its anodic electrothermochemic... more The possibility to increase the corrosion stability of steel 45 by its anodic electrothermochemical oxidation in aqueous solutions of ammonium acetate (10-15%) is shown. Tests of oxidized samples in a sulfuric acid solution (0.5 M) allowed finding a shift of their potential to the positive range (up to 0.3 V) with respect to the platinized electrode, which was accompanied by a decrease in the conductivity of the oxide layer. The minimum corrosion rate [0.7 g/(m 2 day)] in the 5% NaCl solution was obtained for the specimen oxidized at a voltage of 200 V.

Surface Engineering and Applied Electrochemistry, 2012

ABSTRACT The possibility of improving roughness of mild steel after its anodic cementation at red... more ABSTRACT The possibility of improving roughness of mild steel after its anodic cementation at reduced content of ammonium chloride and glycerine in working electrolyte is shown. The method of parts flow-around with distributed longitudinal streams is used, allowing to reduce thickness dispersion of case-hardened layer vertically. Examples of practical application of anodic cementation are given.

Protection of Metals and Physical Chemistry of Surfaces, 2014

ABSTRACT This study is devoted to the effect of the oxide layer formed upon anodic plasma-electro... more ABSTRACT This study is devoted to the effect of the oxide layer formed upon anodic plasma-electrolytic carburization on the rate of carbon diffusion in low carbon steels upon application of an aqueous solution of ammonium chloride with glycerol as a working electrolyte. Approximate determinations of carbon distribution in the surface layer of low carbon steels after their anodic plasma-electrolytic carburizing confirmed the hypothesis that there is deceleration of carbon diffusion by the oxide layer. Different structures of the oxide layer were revealed that depend on the method of sample cooling after their saturation with carbon in an anodic vapor-gas envelope. A possibility of controlling the thickness of the oxide layer was shown, as well as clarification of the surface by the choice of an electrolyte and treatment mode, was shown. A reduction in the roughness of the carburized surface from 0.62 ± 0.02 to 0.22 ± 0.02 μm was revealed.

Protection of Metals and Physical Chemistry of Surfaces, 2010

ABSTRACT The studies were devoted to the effect of concentrations of ammonium chloride and carbon... more ABSTRACT The studies were devoted to the effect of concentrations of ammonium chloride and carbon-containing additives on the depth of martensite layer formed after anode carburization of low-carbon steels. The carbon potentials of electrolytes were determined to contain ammonium chloride (10 wt %) and 10 wt % of a carbon-containing component (acetone, glycerin, ethanol, propanol-2, ethylene glycol, saccharose). Nuclear proton backscatterring was applied to determine the concentration distribution of oxygen, carbon, and nitrogen in the surface layer of some structural steels modified by heating in electrolyte containing 10% ammonium chloride and 20% of carbamide. The capability of surface strengthening of 12Kh18N10T steel due to its carburization without the hazard of intercrystalline corrosion was demonstrated.

Interview with famous Armenian radio broadcaster Gore Grigorian on how the media affect people an... more Interview with famous Armenian radio broadcaster Gore Grigorian on how the media affect people and how they can make their lives better. Gor Grigoryan: "Change yourself, I do not cheat children" A good friend of Omsk Festival "TIME" Armenian TV and radio Gor Grigoryan told GLAGER.RU, how to make social events reached their goal, the TV was not lying, and evil no longer multiply. In contemporary advertising there is a fairly clear distinction between the festival projects and those projects that really work, but do not look so bright. What to do with this division?-In fact, we must clearly understand that any advertising campaign-political, social or commercial-consists of two parts: the idea, creative, production-and the life of this project on TV, radio, outdoor advertising, online, in the form of viral advertising, flash mob, in general, that it is necessary to bring this idea to the masses. The ultimate essence rests on such a thing: the media in Russia, Aremenii, in Europe, in the United States have less trust and less trust. Unfortunately. The media, unfortunately, all too often carry someone's order: Orders bosses, government orders, orders the owners of various companies. Today, the only media channel that inspires confidence, rather than rejection, people become social networks. If the current PSAs will be sharpened by them, it will have more success. Today, less to think about direct advertising, and speak directly into the forehead that "drugs-it is bad" and "Smoking kills", and think more about how to talk with the audience on her language.