Tatarchenko G. Metals and alloys corrosion and protection in the synthesis of oxygen-containing connections

Dissertation is devoted to the investigation of electrochemical corrosion behavior of structural metals and alloys, development of the theoretical foundation for oxygen-containing depolarization, creation of scientific basis for solving important technical prob-lem such us predicting of the corrosion resistance of metallic materials and apparatus ap-pearance of engineering processes involving ozone. It was found that the effect of ozone is based not only on the depolarization of cathodic process, but also on its specific influence on the anodic dissolution of metals by means of recovery through active forms of oxygen with hydrogen. Influence of ozone can be as protective, passivating as labilizing with transfer of metals in transpassive condition. It was established the existence of two areas of potentials with different mechanisms for ozone recovery. The high initial heat of oxygen adsorption on the surface of transition metals that fits to the small covering promotes decomposition of ozone, while increasing the coverage the heat of adsorption of oxygen decreases and conditions for stabilization of molecular ozone are created. Products that are creating in the ozone synthesis of oxygen-containing compounds stimulate corrosion through the recovery of them on the metals. For welds in environments that ozonized increasing consistence of anodic currents across the all range of potentials is characteristically, suggested the use of them.