31 Result(s)

Article

Formation of Coatings from Accelerated Ions of Fluorinated Fullerene C₆₀(CF₃)₁₂

The first results of the deposition of coatings from accelerated ions of fluorinated fullerene C₆₀(CF₃)₁₂ are presented. The coatings are formed at room temperature on Si substrates from a beam of singly charged

V. E. Pukha, A. A. Belmesov, E. N. Kabachkov… in Journal of Surface Investigation: X-ray, S… (2024)

Article

Deposition of Wear-Resistant Nanocomposite Coatings from Accelerated C₆₀ Ions

From accelerated C₆₀ ions at temperatures of 200 and 300°C hard wear-resistant carbon coatings were deposited. It has been established that the mechanical properties of the coatings are determined by the substrat...

V. E. Pukha, E. I. Drozdova… in Journal of Surface Investigation: X-ray, S… (2024)

Article

Structure and Properties of Composite Materials Sintered at High Pressure and Reinforced with Amorphous Boron Particles

Metal matrix composite materials (CMs) reinforced with boron particles are synthesized from powders of amorphous boron and metal (Ni, Ti) at a pressure of 8 GPa and temperatures of 500–1000°C. It is establishe...

I. N. Lukina, O. P. Chernogorova, E. I. Drozdova… in Russian Journal of Physical Chemistry A (2023)

Article

Effect of Hydrogenation of C₆₀ Fullerenes on the Properties of Their Transformation Products at High Pressures and Temperatures

New superelastic superhard carbon materials are obtained from C₆₀ fullerites hydrogenated in the solid state in a hydrogen atmosphere to a content of 0.4 wt % H (formula ~C₆₀H_3.5). Raman spectroscopy, light and e...

O. P. Chernogorova, E. I. Drozdova, I. N. Lukina… in Nanobiotechnology Reports (2022)

Article

High-Temperature Response of the Carbon Phase Produced from Fullerenes under Pressure

The properties (indentation hardness, elastic modulus, and elastic recovery) of reinforcing carbon particles obtained from fullerenes by synthesis of metal-matrix composite materials have been studied by high-...

O. A. Bannykh, I. N. Lukina, E. I. Drozdova… in Russian Metallurgy (Metally) (2021)

Article

Nonequilibrium Diamond Growth during the High-Temperature High-Pressure Synthesis of a Composite Material Made of a Mixture of Cobalt and Fullerene Powders

A composite material (CM) reinforced by diamond particles is fabricated from a mixture of cobalt and 10 wt % C₆₀ powders at a pressure of 8 GPa and a temperature of 1200–1300°C, which is close to the melting temp...

N. A. Bulienkov, E. A. Zheligovskaya, O. P. Chernogorova… in Russian Metallurgy (Metally) (2018)

Article

Electrical and tribological properties of composite material with copper matrix reinforced by superelastic hard carbon

Electrical and tribological properties of a copper-based composite material reinforced by superelastic hard carbon particles are studied. Composite material specimens have been produced using the hightemperatu...

V. V. Izmailov, I. N. Ushakova, E. I. Drozdova… in Journal of Friction and Wear (2016)

Article

Tribological properties of metal-matrix composite materials reinforced by superelastic hard carbon particles

Metal-matrix composite materials (CMs) are synthesized from a mixture of a metal powder (Ti, Fe, Co, Ni, Cu, Al-based alloy) and fullerenes (10 wt %). The thermobaric synthesis conditions (700–1000°C, 5–8 GPa)...

I. N. Ushakova, E. I. Drozdova, O. P. Chernogorova… in Russian Metallurgy (Metally) (2016)

Article

Electrical-contact properties of a composite material with a copper matrix reinforced by superelastic hard carbon

The electrical contact resistance and the electric-erosion wear resistance of the composite material consisting of a copper matrix reinforced by superelastic hard carbon are studied. The reinforcing of CM by c...

V. V. Izmailov, E. I. Drozdova, O. P. Chernogorova… in Russian Metallurgy (Metally) (2015)

Article

Structure and fracture of superelastic hard carbon materials produced from fullerites under pressure

The composition and size of fullerites and the structures and fracture surfaces of superelastic hard carbon phase (SHP) particles made from them and reinforcing metal-matrix composite materials are studied by ...

O. A. Bannykh, I. N. Ovchinnikova, O. P. Chernogorova… in Russian Metallurgy (Metally) (2011)

Article

Effect of pressure on the formation of superelastic hard particles in a metal-fullerene system and the tribological properties of composite materials reinforced with such particles

Raman spectroscopy, X-ray diffraction, and microhardness and modulus of elasticity measurements are used to study the influence of compacting pressure (5, 8 GPa) on the structure and properties of the phases p...

O. P. Chernogorova, E. I. Drozdova, V. M. Blinov… in Russian Metallurgy (Metally) (2011)

Article

Diamond synthesis from C₆₀ fullerite using boron and titanium diboride

Boron-doped diamond has been synthesized from C₆₀ fullerite at 7 GPa and 2000–2050 K using unconventional solvents for carbon: boron and titanium diboride.

A. A. Shulzhenko, A. N. Sokolov, O. P. Chernogorova, E. I. Drozdova… in Inorganic Materials (2009)

Article

Structure and properties of the superelastic and hard carbon particles reinforcing wear-resistant composite materials obtained from mixtures of iron and fullerene powders under pressure

The structure and mechanical properties of hard and superelastic carbon particles formed at a pressure of 5 GPa at 1200–1400°C upon the consolidation of metal-fullerene powder mixture into a composite material...

O. P. Chernogorova, E. I. Drozdova, V. M. Blinov… in Nanotechnologies in Russia (2008)

Article

Effect of the temperature of compacting a mixture of iron and fullerite powders on the structure and properties of the produced composite material

X-ray diffraction, Raman spectroscopy, microhardness measurements, and wear tests are used to study the phase composition, structure, and properties of composite materials (CMs) produced by the compaction of a...

E. I. Drozdova, O. P. Tchernogorova, I. N. Potapova in Russian Metallurgy (Metally) (2006)

Article

Effect of shock-wave treatment on the structure and hardening of austenitic steels

The structure and hardening of austenitic steels subjected to shock-wave treatment have been studied. This treatment is shown to form a structure whose cell size decreases with increasing pressure. The treatme...

V. M. Blinov, O. P. Tchernogorova, E. I. Drozdova… in Russian Metallurgy (Metally) (2006)

Article

Relationship Between Post-Tetanic Potentiation of the Cholinosensitivity of Neurons in the Common Snail and a Humoral Factor

Plots of post-tetanic changes in the amplitude of the acetylcholine-evoked influx current (the ACh current) in common snail command neurons were compared in different experimental conditions: with and without ...

M. S. Abramova, E. I. Drozdova, V. L. Nistratova… in Neuroscience and Behavioral Physiology (2004)

Article

Regulation of Post-Tetanic Increases in the Cholinosensitivity of Neurons in the Common Snail by the Na,K Pump: The Role of Na/Ca Exchange and Calcium Mobilization

A. S. Pivovarov, E. I. Drozdova in Neuroscience and Behavioral Physiology (2003)

Article

Ca-Dependent Regulation of the Na-K-Pump by Post-Tetanic Sensitization of Extrasynaptic Cholinoreceptors in Common Snail Neurons

Studies were conducted on the role of the Na,K pump and intracellular calcium in the previously observed phenomenon of increased cholinosensitivity of the somatic membranes of neurons LPa3 and RPa3 in the comm...

A. S. Pivovarov, E. I. Drozdova in Neuroscience and Behavioral Physiology (2002)

Article

Dose-Dependence of the Excitatory Effects of Acetylcholine on Common Snail Neurons after Orthodromic Tetanization

A. S. Pivovarov, E. I. Drozdova in Neuroscience and Behavioral Physiology (2002)

Article

Generalized Post-Tetanic Changes in Excitatory Postsynaptic and Acetylcholine-Evoked Currents in Neurons in the Common Snail

Changes in excitatory postsynaptic currents (EPSC) and influx currents induced by local iontophoretic application of acetylcholine (ACh currents) to the surfaces of the bodies of identified neurons LPa3 and RP...

A. S. Pivovarov, E. I. Drozdova, A. A. Moskvitin in Neuroscience and Behavioral Physiology (2001)