Technological Institute for Superhard

Moscow, Russia

Technological Institute for Superhard

Moscow, Russia
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Kulevoy T.V.,National Research Nuclear University MEPhI | Chalyhk B.B.,RAS Research Center Kurchatov Institute | Fedin P.A.,RAS Research Center Kurchatov Institute | Sitnikov A.L.,RAS Research Center Kurchatov Institute | And 12 more authors.
Review of Scientific Instruments | Year: 2016

Metal Vapor Vacuum Arc (MEVVA) ion source (IS) is a unique tool for production of high intensity metal ion beam that can be used for material surface modification. From the other hand, the duoplasmatron ion source provides the high intensity gas ion beams. The MEVVA and duoplasmatron IS developed in Institute for Theoretical and Experimental Physics were used for the reactor steel surface modification experiments. Response of ferritic-martensitic steel specimens on titanium and nitrogen ions implantation and consequent vacuum annealing was investigated. Increase in microhardness of near surface region of irradiated specimens was observed. Local chemical analysis shows atom mixing and redistribution in the implanted layer followed with formation of ultrafine precipitates after annealing. © 2015 AIP Publishing LLC.

Polyakov S.N.,Moscow State University | Denisov V.N.,Russian Academy of Sciences | N.v.kuzmin,Technological Institute for Superhard | Kuznetsov M.S.,Technological Institute for Superhard | And 4 more authors.
Diamond and Related Materials | Year: 2011

We have performed a complex analysis of top-quality synthetic diamond HPHT type IIa single crystals in view of their potential application as X-ray optics elements, namely as free electron laser mirrors. We have employed X-ray topography and high-resolution diffractometry along with optical spectroscopy techniques for characterization of our synthetic diamonds. © 2011 Elsevier B.V. All rights reserved.

Blank V.D.,Moscow Institute of Physics and Technology | Kulnitskiy B.A.,Moscow Institute of Physics and Technology | Perezhogin I.A.,Moscow Institute of Physics and Technology | Terentiev S.A.,Technological Institute for Superhard | And 2 more authors.
Materials Research Express | Year: 2014

Boron doped diamond (BDD) single crystals have been grown under conditions of high isostatic pressure by the temperature gradient method. Numerous equilateral triangles were found on the fluorescence images of {111}-diamond facets. Structural peculiarities of BDD were investigated by JEM-2010 transmission electron microscope with GIF Quantum attachment for electron energy loss spectroscopy (EELS). High resolution image of diamond lattice revealed some distorted {111}-layers. EELS testifies the presence of boron in distorted regions of diamond lattice. The crystallographic features of BDD and their connection with the superconductivity are discussed. © 2014 IOP Publishing Ltd.

Mordkovich V.Z.,Technological Institute for Superhard | Karaeva A.R.,Technological Institute for Superhard
Fullerenes Nanotubes and Carbon Nanostructures | Year: 2010

Carbon nanotubes can become a cheaper alternative to carbon fibers based on traditional technology. The conditions for successful longer carbon nanotube catalytic growth are formulated. Optimization is needed in order to break through three general limitations, which prevent nanotubes from reaching great length: slow growth; growth quenching, which is manifested by stopping growth due to catalyst capsulation or poisoning or due to other reasons; and competition between the nanotube elongation and the nanotube thickening. The experimental results on CNT growth show the possibility of producing centimeter-long nanotubes suitable as precursors for manufacturing super-strength carbon threads and also new kinds of functional nanocomposites. © 2010 Taylor & Francis Group, LLC.

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