Relationship between the Porous Structure Hierarchy and the Physical and Mechanical Properties of Calcium Phosphate Drug Carriers

Russian Physics Journal - A relationship between the structural-morphological and physical-mechanical properties of macro-porous calcium phosphate (CaP) coatings on the surface of titanium implants...     

Electron microscopy of steel 08G2S wire after electrostimulated drawing

Diffraction electron microscopy has been applied to the microstructure evolution in 08G2S steel after ordinary and electrostimulated drawing; the current pulses affect some fine-structure characteristics.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 31–35, December, 1990.We are indebted to V. E. Panin for stimulating interest in this topic.     

The Influence of Ultrafine-Grained State of Zr – 1 wt.% Nb and Ti – 45 wt.% Nb Alloys on their Thermophysical Properties and Energy Dissipation and Accumulation during Deformation

Russian Physics Journal - The results of a study of thermal conductivity and specific heat capacity of Zr – 1 wt.% Nb and Ti – 45 wt.% Nb alloys in coarse-grained and ultrafine-grained...     

Formation of Structural,Physical and Adhesion Properties in Calcium-Phosphate Biocoatings in the Course of Microarc Oxidation Using Fe–Cu Nanocomposite Particles

Russian Physics Journal - A method for modification of calcium-phosphate coatings, formed by microarc oxidation, with Fe–Cu nanocomposite bicomponent particles is proposed. The effect of...     

Modification of the physicomechanical properties of metallic materials by formation of nanoscale intermetallic phases under ion implantation

The fundamental and technological aspects of application of nanosized intermetallic compounds as implanted layers have been considered. The existing theoretical and experimental data on the effect of ion implantation on the structural state and physicomechanical properties of surface layers of metals (nickel and titanium) have been analyzed. The common features and differences in the phase composition and distribution of the phases formed by implantation over the alloyed metal layers are demonstrated.     

Influence of current pulses in plastic deformation on the macrostructure of austenitic chromomanganese steel

Experimental data on the evolution of the microstructure of a 17GKhAF steel wire subjected to ordinary and electrically stimulated (by a pulsed current) drawing with a total constriction of up to 35% ate outlined. The change in scalar dislocational density, volume fraction of regions with strong lattice rotation, excess dislocational density in these regions, density of twins, and azimuthal disorientation of adjacent regions of microstructure are analyzed.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 84–90, September, 1991.     

Modifying the structural phase state of fine-grained titanium under conditions of ion irradiation

The results from quantitative investigations into the structural phase state of finely dispersed titanium before and after implantation with aluminum ions are presented. Two types of ??-Ti grains differing by phase composition, defect structure, and size are distinguished in the structure: fine grains in the range of 0.1?C0.5 ??m and coarse grains in the range of 0.5?C5 ??m. The presence of two types of TiO₂ particles in the material, i.e., rounded particles found at dislocations in the bulk of the ??-Ti grains and lamellar particles found only inside coarse ??-Ti grains, is established. The formation of the Ti₃Al phase is observed in the form of lamellar inclusions along the grain boundaries and rounded particles in triple joints. It is found that the particles of the TiAl₃ phase are isolated with a smaller volume fraction than the Ti₃Al phase; they are localized along the boundaries of coarse grains of the titanium matrix. It is established that the granular state and defect structure of the material change substantially after ion irradiation; i.e., the dislocation density and the fields of internal stresses in fine grains grow considerably, relative to the initial state of titanium.