Volume 12, Issue 4, December 2022

SEM images of the graphene nanofilm in the matrix of AlMgGr composite and after it dissolution in 20% HCl. Raman spectrums of the graphene nanofilms in AlMgGr composite and the graphene films obtained after dissolution of the composite in 20% HCl.

XRD patterns from annealed Cu-Al-Cu samples after conventional (left pattern) and accumulative (right pattern) HPT.

The effect of carbon-alloying (1 at.%) on the hydrogen embrittlement susceptibility of equiatomic high-entropy alloy FeNiCoCrMn has been studied. The carbon-alloyed alloy has higher resistance to hydrogen embrittlement compared to the interstitial-free Cantor alloy.

HAADF image of the cross section of the NiCrBSiC coating

Представлены две деформационные кривые при растяжении без тока и с током в сплаве с памятью формы. Видны скачки напряжения вверх и вниз, вызванные фазовым преращением и электропластическим эффектом, соответственно.

Changes in the microstructure of quenched pure iron after the tempering procedure for 1 hour at a temperature of 160 - 220 °C.

The interaction of a lattice edge dislocation with a 〈110〉 tilt boundary in nickel was studied by the molecular dynamics method in the case when the dislocation glide plane is parallel to the grain tilt axis

Multilayer structures of resistive sensors based on thin polymer films, SEM images of microstructures of film samples and calibration characteristics

Bisphenol A derivatives on the surface of carbon materials.

The synthesized material mainly consists of amorphous carbon with graphite crystallites, the maximum amount of which is formed during an arc discharge in nitrogen.

Dependence of the critical currents on the thickness of the non-magnetic layer in a spin-transfer nanoscillator.

Better formability of the novel alloy is mainly due to the high content of the beta phase. Superplastic forming results in improvement of the microstructure homogeneity.

Studies of the effect of the introduction of charged aluminum oxyhydroxide (AO) nanoparticles into calcium phosphate porous coatings formed by micro-arc oxidation on their electrical potential and structure are presented. An increase in the duration of ultrasonic dispersion of initial AlN powder suspension from 10 to 60 min and an increase in the surface roughness of the coatings, parameter Ra, from 3.5 to 5.5 µm led to an increase in the surface electrical potential from −85 to −35 mV.

The figure shows the mass gain depending on oxidation time of the TNM (Ti-43.5Al-4Nb-1Mo-0.1B, at,%) and TNZ (Ti-44Al-6(Nb,Zr,Hf)-0.15B, at.%) samples, which were exposed to air at 800°C. The dotted lines show the approximation from 500 to 1000 h.

Thermal conductivity of diamond materials in transition from monocrystals to nanostructured nanodiamond composites declines two orders down due to the change in dominating factor that contributes to the thermal resistance – phonon scattering upon inner defects is changed by domination of phonon scattering at boundaries.

Investigation by simulation methods of the development of defects in a polycrystal of aluminum bronze and their stability when interacting with a melt drop during surfacing.

Al-Nb composites demonstrate a considerable dependence of tensile strength on HPT straining which almost doubled upon the increase of torsional straining from 30 to 100 rotations of HPT anvil and reached 530 MPa. Annealing resulted in an increase in ductility up to ~12% with a slight decrease in tensile strength.

A cubic perovskite of complex composition Pb1/3Na1/3K1/3Ta2/3Fe1/3O3-δ (sp. gr. Pm-3m, a = 3.9767(3) Å) was synthesized for the first time by the solid-phase reaction method.

New rolling mill 400 for asymmetrical rolling in NMSTU, Magnitogorsk

A ceramic material based on rare-earth zirconates with a pyrochloric structure, possessing phase and structural stability at 1300 °C was obtained. The use of REE oxide concentrate is promising for TBCs with thermal stability above 1200°C.