Role of the high pressure of hydrogen in the phenomenon of hydrogen sulfide corrosion cracking of steel

Translated from Fiziko-Khimicheskaya Mekhanika Materialov, No. 2, pp. 33–36, March–April, 1990.     

Subcritical state diagnosis for nuclear power plant containing RBMK-1000

Leningrad Reactor Research Institute. Translated from Atomnaya Énergiya, Vol. 70, No. 3, pp. 180–182, March, 1991.     

Nanodimensional changes in the structure of ion-irradiated silicon crystals at a depth exceeding the ion range

Atomic force microscopy reveals changes in the surface micromorphology of ion-irradiated silicon crystals in the course of dynamic chemical polishing and selective etching to a depth significantly exceeding the range of 40-keV Ar⁺ ions.     

Special Features of the Calculation of the Stress–Strain State of VVÉR Second-Loop Pipelines with Erosion–Corrosion Thinning

Some details of an algorithm and computational results are presented for VVÉR second-loop pipelines exhibiting erosion–corrosion wear. The program makes it possible to perform calculations of thinnings for a complicated shape which gradually vary in two mutually perpendicular directions. The calculations were performed for rectilinear sections of a pipe and a zone near a bend. The computational results can be displayed in graphical form in color and in a black-and-white.     

Signal reception characteristics estimation of radar with moving-target indication in case of turbulent atmosphere

Signal reception characteristics of radar with typical moving-target indication systems in case of turbulent atmosphere with representative correlation radii for the wind velocity vector fluctuation are obtained.     

On propagation of a shock wave in a porous material upon collision of plates

The results of studying the propagation of shock waves in porous aluminum are given. Agreement between experiment and numerical calculations based on a model that takes into account the influence of a plastic zone is demonstrated.Institute of Theoretical and Applied Mechanics, Novosibirsk 630090. Translated from Fizika Goreniya i Vzryva, Vol. 31, No. 4, pp. 79–83, July–August, 1995.     

Low-voltage planar field emitters based on carbon nanotubes

Planar field emitters based on carbon nanotubes are studied in an ultrahigh-vacuum chamber and sealed-off vacuum devices. In the sealed-off devices, an emission current of 1 mA is obtained at a mean electric field of 5.2–5.8 V/μm and the relative fluctuation of the emission current is 0.2–0.4%. The emission characteristics of the devices remain unchanged over a storage period of one year.