Effect of Impurities on Varistor Properties of High-Voltage ZnO Ceramics

Russian Journal of Applied Chemistry - The effect of cationic and anionic impurities on the varistor properties of high-voltage ZnO ceramics with a ZnO content of 75 wt % and a weight ratio of...     

Photoconversions of 15-crown-5-containing styryl dye and its complex with barium cation in the presence of cucurbit[7,8]urils

Russian Chemical Bulletin - Photophysical processes and photochemical reactions of a 15-crown-5-containing styryl dye of the pyridine series and its complexes with barium perchlorate in water in...     

Structure,Phase Composition and Properties of Rail Running Surface at Extremely Long Operation Time

Russian Physics Journal - The paper presents investigations of the structure, phase composition and properties of the rail running after bulk steel hardening. Investigations are performed at a...     

Model of formation of inner nanolayers in shear flows of material

We consider a mathematical model for the formation of internal nanocrystal layers in shear flows of material, which is based on the evolution of the Kelvin-Helmholtz instability. The dispersion relation is derived for the linear interaction between finite layers of ideal and viscous fluids. Analysis of the dispersion equation shows that viscosity and thickness of a moving layer play a decisive role in the formation of nanosize waves.     

Surface relief and structure of electroexplosive composite surface layers of the molybdenum-copper system

The surface topography and structure of copper layers exposed to multiphase plasma jets of products of electrical explosion of molybdenum and copper foils are studied using profilometry and scanning electron and light microscopy. Such treatment allows deposition of either layered coatings or alloyed composite layers. It is found that the surface layer roughness parameter is R _a = 3.2−4.0 μm. The thickness of some copper and molybdenum layers of coatings is 15–20 μm. Electroexplosive alloying produces layers 25 μm thick. Sizes of copper inclusions in the molybdenum matrix near the surface of such layers vary from 30 nm to 1–2 μm.