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Перегляд Відділення фізико-технічних проблем матеріалознавства за темою "Получение, структура, свойства"

Репозиторій DSpace/Manakin

Перегляд Відділення фізико-технічних проблем матеріалознавства за темою "Получение, структура, свойства"

Сортувати за: Порядок: Результатів:

  • Analysis of direct transformation from graphite to diamond crystal 
    Tian, B.; Xu, B.; Xu, Y. (Сверхтвердые материалы, 2016)
    The lattice parameters of cubic diamond and rhombohedral graphite under the probable direct transformation synthesis conditions have been obtained by means of linear expansion coefficient and elastic constant. Based on the ...
  • A novel layer-structured PtN₂: first-principles calculations 
    Fan, C.Z.; Li, J.; Hu, M.; Zhao, Z.S.; Xu, B.; He, J.L. (Сверхтвердые материалы, 2013)
    Platinum nitride as the first successfully synthesized noble metal nitride shows superior mechanical properties and exotic electronic structure that rival those of conventional transition metal nitrides. In the past diverse ...
  • A potential superhard material m-BCN 
    Rui, S.; Dong, W.; Li-Hua, G. (Сверхтвердые материалы, 2018)
    We here propose a new superhard material m-BCN with comparable Vickers hardness to cBN by the use of first-principles calculations. The calculations show that the mentioned m-BCN is a thermodynamically and kinetically ...
  • Boron: a hunt for superhard polymorphs 
    Oganov, A.R.; Solozhenko, V.L. (Сверхтвердые материалы, 2009)
    Boron is a unique element, being the only element, all known polymorphs1 of which are superhard, and all of its crystal structures are distinct from any other element. The electron-deficient bonding in boron explains its ...
  • Characterization of Ti–B–C–N films deposited by dc magnetron sputtering of bicomponent Ti/B₄C target 
    Onoprienko, A.A.; Ivashchenko, V.I.; Timofeeva, I.I.; Sinelnitchenko, А.К.; Butenko, О.А. (Сверхтвердые материалы, 2015)
    Quaternary Ti–B–C–N films have been deposited onto Si (100) substrates by dc magnetron sputtering of bi-component Ti/B₄C target in an Ar/N₂ gas mixture with different amounts of nitrogen in the mixture (from 0 to 50%). The ...
  • Comparative investigation of NbN and Nb–Si–N films: experiment and theory 
    Ivashchenko, V.I.; Scrynskyy, P.L.; Lytvyn, O.S.; Butenko, O.O.; Sinelnichenko, O.K.; Gorb, L.; Hill, F.; Leszczynski, J.; Kozak, A.O. (Сверхтвердые материалы, 2014)
    NbN and Nb–Si–N films have been deposited by magnetron sputtering of the Nb and Si targets on silicon wafers at various powers supplied to the Nb target. The films have been investigated by an atomic force microscope, X-ray ...
  • Composites of the cBN–Si₃N₄ system reinforced by SiCw for turning tools 
    Osipov, A.S.; Klimczyk, P.; Cygan, S.; Melniichuk, Iu.A.; Petrusha, I.A.; Jaworska, L. (Сверхтвердые материалы, 2016)
    The cBN–Si₃N₄–SiCw composites with different SiCw contents up to 20 vol % have been produced at high pressure of 8.0 GPa and high temperature of 2500 K. It has been defined that the Young modulus of the composites were ...
  • Covalent-bonded graphyne polymers with high hardness 
    Hu, M.; He, J.; Wang, Q.; Huang, Q.; Yu, D.; Tian, Y.; Xu, B. (Сверхтвердые материалы, 2014)
    Eight covalent-bonded graphyne polymers have been proposed using the newly developed USPEX and CALYPSO methods based on the first principle calculations. These polymers are energetically more favorable than the corresponding ...
  • Crystal structures, elastic properties, and hardness of high-pressure synthesized CrB₂ and CrB₄ 
    Wang, S.; Yu, X.; Zhang, J.; Zhang, Y.; Wang, L.; Leinenweber, K.; Xu, H.; Popov, D.; Park, Ch.; Yang, W.; He, D.; Zhao, Y. (Сверхтвердые материалы, 2014)
    Chromium tetraboride (CrB₄), a recently proposed candidate for superhard materials, has been synthesized at high pressure and temperature by a solid-state reaction. As a byproduct, chromium diboride (CrB₂) also forms and ...
  • Design of hard surfaces with metal (Hf/V) nitride multinanolayers 
    Escobar, C.; Caicedo, J.C.; Caicedo, H.H.; Mozafari, M. (Сверхтвердые материалы, 2014)
    Physical properties as mechanical and tribological evolution on 4140 steel surfaces coated with hafnium nitride/vanadium nitride [HfN/VN]n multinanolayered systems deposited in various bilayer periods via magnetron sputtering ...
  • Developments in synthesis, characterization, and application of large, high-quality CVD single crystal diamond 
    Liang, Q.; Meng, Y.-F.; Yan, C.-S.; Krasnicki, S.; Lai, J.; Hemawan, K.; Shu, H.; Popov, D.; Yu, T.; Yang, W.; Mao, H.K.; Hemley, R.J. (Сверхтвердые материалы, 2013)
    Single crystal diamond synthesis by microwave plasma chemical vapor deposition at rapid growth rate has considerably advanced in the past few years. Developments have been made in growth, optical quality, and mechanical ...
  • Effects of sintering temperature and addition of Fe and B₄C on hardness and wear resistance of diamond reinforced metal matrix composites 
    Şimşir, M.; Öksüz, K.E. (Сверхтвердые материалы, 2013)
    The effects of sintering temperature and addition of Fe instead of Co into the matrix composition on the mechanical properties of diamond-reinforced MMC’s have been studied. Diamond-reinforced MMC’s based on Fe–Co compositions ...
  • Elastic and thermodynamic properties of potentially superhard carbon boride materials 
    Letsoalo, T.E.; Lowther, J.E. (Сверхтвердые материалы, 2012)
    Boron icosahedral structures are the basic building structures of many important hard borides and especially В₄С. The structural and thermodynamic properties of В₄С have been examined applying molecular dynamics simulation ...
  • Electronic structures and mechanical properties of boron and boron-rich crystals (Part 2) 
    Shirai, K. (Сверхтвердые материалы, 2010)
    The second part of this review treats the phase diagram of boron, because of the importance of the material research. A comparison of the phase stabilities of related crystals has been made and deducing general trends among ...
  • Electronic structures and mechanical properties of boron and boron-rich crystals (Part I) 
    Shirai, K. (Сверхтвердые материалы, 2010)
    This article attempts to provide a consistent description for the unique characters of boron and boron-rich solids from the electronic-structure calculations. Recent developments of the first-principles calculation provide ...
  • Fabrication and wear performance of (Cu–Sn) solution/TiCx bonded diamond composites 
    Baoyan, L.; Danhui, H.; Wangxi, Z. (Сверхтвердые материалы, 2018)
    The Cu(Sn)–TiCx bonded diamond composites were prepared by in situ reaction sintering of Cu, Ti₂SnC and diamond powders. Effect of Ti₂SnC content on the phase composition, microstructure and grinding properties were studied.
  • Facile and scalable synthesis of Ti₅Si₃ nanoparticles via solid-state route in an autoclave 
    Mao, W.; Bao, K.; Cao, F.; Ye, L.; Xie, H.; Li, B.; Wang, W. (Сверхтвердые материалы, 2017)
    A novel method of the synthesis of titanium silicide nanoparticles via solid-state route in an autoclave at 700 °C is reported. The reaction of titanium silicide could be described briefly as: 5TiO₂ + 3Si + 20Li = Ti₅Si₃ ...
  • From soft to superhard: fifty years of experiments on cold-compressed graphite 
    Wang, Y.; Lee, K.K.M. (Сверхтвердые материалы, 2012)
    In recent years there have been numerous computational studies predicting the nature of cold-compressed graphite yielding a proverbial alphabet soup of carbon structures (e.g., bct-C4, K4-, M-, H-, R-, S-, T-, W- and ...
  • From superhard to hard: a review of transition metal dioxides TiO₂, ZrO₂, and HfO₂ hardness 
    Al-Khatatbeh, Y.; Lee, K.K.M. (Сверхтвердые материалы, 2014)
    The high-pressure, high-temperature behavior of transition metal dioxides TiO₂, ZrO₂, and HfO₂ has been reviewed. In particular, early predictions and measurements that suggested superhard behavior for the transition metal ...
  • Hard and superhard carbon phases synthesised from fullerites under pressure 
    Brazhkin, V.V.; Lyapin, A.G. (Сверхтвердые материалы, 2012)
    A review has been presented on the structural and mechanical properties of hard carbon phases synthesized from fullerite C₆₀ under pressure. The density and nanostructure have been recognized as the key parameters defining ...

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