The microstucture of titanium and zirconium in coarse-grain and nanostructured states and calcium-phosphate coatings on their surface were studied. The kinetic regularities of the processes in corrosive medium was obtained, activation energy was determined and the corrosive relief on was investigated. It was shown that calcium-phosphate coating protects of metals from attack of corrosion medium.

The results of the microstructure, phase composition and mechanical properties investigations of titanium in different structural state (grain sizes 0,1 mu m; 1,4 mu m; 15 and 38 mu m) after the Al ions implantation using Diana-2 source at dose of irradiation 5.10(17) ion/cm(2) and an accelerating voltage 60 keV are presented. A dependence of depth penetration implanted aluminum ions in polycrystalline titanium from the grain size initial samples is analyzed. Influence of the graine sizes and ion implantation regimes on structural state and phase composition and mechanical properties was observed.

In connection with the intensive development of offshore industry and the interrelated expansion of underwater technology (oil and gas production from the ocean bed, construction of offshore wind parks etc.) problems of high-quality welding and cutting technology gain special significance. The Institute of Materials Science of the Leibniz University Hanover has been working in the field of underwater technology for many years. Great experience in the development of welding material, welding and cutting technology especially for the maritime area has been achieved. The results of metallographic and microhardness research of build-up welding at air and under water are presented.

Positive influence mehanoactivated influences of a stream of electrolit on structure and hardness nickel and copper coatings is shown. The data about modes mehanoactivation for improvement of characteristics of coatings is obtained. For nickel coatings inexpediency of application has been revealed at mehanoactivation air influence.