Volume 9, Issue 1, March 2019

The electrical properties of the CaCu3Ti4O12–СuO composite were studied by the method of impedance spectroscopy

Microstructure of the ZrB2-B4C SHS-composite, consisting of hollow ZrB2 shells and ceramic binder - B4C.

New molybdates Rb5MI1/3Zr5/3(MoO4)6 (MI – Na, K) are synthesized. Their crystallographic parameters are determined.

During deposition of coatings, the formation of reverse flows containing products of chemical reaction and the non-reacting reagents was possible due to the effect of ejection. As a result, part of the reagents interacted with the surface of the stainless steel screen, which leads to the formation of Fe2Br4 and CrBr2, and the subsequent reduction on the substrate of not only tantalum bromide, but also iron bromide.

In the field of mechanical stresses, the state of the crystal lattice, called weakly stable, is the delocatization of atoms, characterized by a 20% shift from their equilibrium position.

investigation of the destruction of steel AISI 316 by electron microscopy and SCP methods. To confirm the results obtained by the methods of structural analysis, methods of measuring microhardness and roughness were also used.

Dependencies of temperature and rate of change electric current during at ETE at (Cr+B) content: 1) 90; 2) 80; 3) 70 % wt., obtained at P=96 MPa and U=11 V.

Hexagonal cells with a symmetrical (a) and chiral (b) connection of particles

An isothermal annealing of the as cast Fe-27Ga alloy formed a microstructure with a different ratio of metastable bcc and equilibrium fcc phases having different magnetic structures and properties. The possibility of stabilizing the metastable D03 phase due to microalloying of Tb is shown. The hypothesis explaining this effect through the competition between nucleation and growth of L12 phase and phase Fe44Ga47Tb9 along the boundaries of dendrites and grains of D03 phases is substantiated.

Adhesion between polydimethylsiloxane (PDMS) and a glass ball is observed in the process of transformation of PDMS from a viscous liquid to viscoelastic solid.

The possibility of applying structural units model was analyzed to describe amorphous state based on matching x-ray diffraction data with heating values using the example Finemet-type alloy (Fe72.5Cu1Nb2Mo1.5Si14B9).

The dependence of complex viscosity of a melt of mix PP with HDPE-20 (1) and LDPE-276 (2) defined with a frequency of oscillation of 0,1 Hertz on a ratio of polymers in mix.

The effect of the sintering temperature under pressure on the structural-phase composition, density, hardness, and conditional yield strength of bulk composites based on an AlMg2 alloy reinforced with 1 wt.% γ-Al2O3 nanofibers.

Crumpled graphene, consisting of randomly oriented graphene flakes, repeated along three x, y, z coordinate axes

Significant SHG effect found for K0.6Rb1.4Al2B2O7 at room temperature. The new triple borate Cs1.39Tl0.61Al2B2O7 synthesized and its crystallographic parameters determined.

Appearance of oxygen vacancies in TiO2-Mn leads to a small ferromagnetic contribution in magnetization

The authors suggested a finite-element approach to modeling the inelastic behavior of structurally graded specimens manufactured by SLM.

The influence of isothermal holding on TiNi alloy properties preliminary subjected to thermal cycling was investigated. Holding at temperatures that are higher than the maximum cycle temperature suppresses the influence of thermal cycling on the parameters of martensitic transformations: the temperatures and the sequence of the martensitic transformations restore.

A model is proposed to describe a change of grain boundaries nonequilibrium state and its diffusive properties during low-temperature annealing of submicrocrystalline materials containing, in the initial state, a system of grain-boundary nano-cavities. It is shown that non-equilibrium state of grain boundaries can be maintained for a long time of low-temperature annealing.

An increase in the temperature of deformation in the range of 20–400 ° C in austenitic-martensitic steel leads to a degradation of the TRIP effect, a decrease in strength, and embrittlement.

The width of the interface boundary area is no more than two interatomic distances, because it is impossible to insert more than two atoms into the boundary along its width. The regularity of the ring contrast of the border areas of the interface indicates the crystal structure of the material.

Copper truncated icosahedra obtained by electrodeposition of metal

At present work established that, depending on the direction of scratching, the hardness and the AE power exhibit opposite trends, both following the anisotropic properties of a cubic crystal lattice. It is shown that the direction of scratching affects not only the energy of the AE signal, but also its spectral characteristics.

Resistance of super square carbon nanotubes film was calculated by non-equilibrium Green function (NEGF) method.

Temperature increase as a function of time (number of turns) for (a) fcc (Al, Cu, Ni) and (b) hcp (Zn, Ti, Zr) metals subjected to HPT.