корозія

The perspective of using combined thermal, ionic and deformation effects as a tool for purposeful modification of the structural and phase states of the near-surface region of a wide class of structural and functional metal materials to increase the durability, quality and reliability of parts, products and structures of transport engineering and medicine has been proven. Steels 40X13, 08X18N10, 9Г2ФА, aluminum alloys AMg6, D16, cobalt alloy Co-Cr-Mo-W, brass LS59-1, titanium alloy VT6, multi-component alloys Fe81B7Si1P10Cu1, CrMnFeNi2CoCu, etc. were studied.

Obtained ecologically safe compounds (organic compounds from plant extracts) for the formation of a passivation layer and modification of metal surfaces that meet global trends in the concept of sustainable development of "green" chemistry and "green" economy for enterprises.

The scientific foundations of corrosion micro- and nano-structured materials in electrochemical systems, sensors and supercapacitors, which are based on the new classification of corrosive processes. Scientific novelty create a foundation is in the experimental and theoretical justification identifying the crucial role of corrosion processes on the kinetics of electrode processes under extreme operating conditions these systems.

New method of ionization metal process management proposed. It based on addition of organic compounds which formed slightly soluble compounds with metal ions. Due to proposed scheme such layers formed on surface blocked layers which retard corrosion processes. Gravimetric provening of such criteria obtained. Experimental data on organic substances influence on cathodic and anodic over voltage obtained. Iron surface investigated by SEM and AFM. Model of system iron surface/solution has analyzed at organic substances influence.

The electrochemical behavior of steel in a model of contact water heating was investigated. It was shown that the increase in temperature, carbon dioxide concentration, the application of stirring lead to an increase in corrosion rate, which is not inhibited in time unlike corrosion in the water with natural CO2 content. The dependence of pH on the concentration of CO2 was established, which is the main corrosion factor.