New polymorphous types of graphene formed from carbyne chains
A. E. Kochengin, E. A. Belenkov
The structure of the new polymorphic types of graphene was obtained as a result of different variants linking of carbyne chains. Geometric optimized structure and a number of properties model derived layers were calculated using the density functional theory in the gradient approximation. In result calculations established the possibility of stable existence of fifteen new polymorphic types of Graphene, composed of carbon atoms in two or three different crystallographic positions. The band gap of eight polymorphs is zero, and for the rest is from 0.13 to 0.59 eV. The energy of sublimation for polymorphs L4-6-8a, L4-6-8b, L4-6-8c, L4-6-8e and L4-6-8f was higher than the values of sublimation energy main polymorphs of graphene (L4-8, L3-12 and L4-6-12), but lower than the energy of atomization of hexagonal graphene.
Keywords: graphene, polymorphism, electronic structure, computer modeling.
Kochengin Andrey — Chelyabinsk State University (Chelyabinsk, 454001, st. Brothers Kashirinykh, 129), graduate student of condensed matter physics department, specialist in the field of materials science. E-mail: kochengin.ae@gmail.com.
Belenkov Evgeny — Chelyabinsk State University (Chelyabinsk, 454001, st. Brothers Kashirinykh, 129), Dr Sci (Phys-Math), professor, professor of condensed matter physics department, specialist in the field of materials science. E-mail: kochengin.ae@gmail.com.
Reference citing
Kochengin A. E., Belenkov E. A. Novye polimorfnye raznovidnosti grafena, sformirovannye iz karbinovyh cepochek [New polymorphous types of graphene formed from carbyne chains]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 5 – 13.
New “old” polylactides for tissue engineering constructions
E. N. Antonov, T. B. Bukharova, A. G. Dunaev, L. I. Krotova,
I. E. Nifant’ev, V. K. Popov, А. V. Shlyakhtin
A new methods of aliphatic polyester synthesis using high-efficient and low-toxic catalysts based on 1.5.7-triazabicyclo[4.4.0] decene-5 and (2.6-di-tert-butyl-4-methoxy)-butylmagnesium with ethanol as an initiator was proposed and realized. The processes of supercritical carbon dioxide interaction with various molecular weight D,L-polylactides synthesized by these methods, targeted to the “soft and dry” (without usage of high temperature and toxic organic solvents) fabrication of highly porous (up to 80%) bioresorbable scaffolds for tissue engineering constructions have been studied. Chemical structure, molecular weight distribution, morphology, cytotoxicity and cytocompatibility of the scaffolds made from a new D,L-polylactides were analyzed by NMR spectroscopy, gel-permeation chromatography, as well as, MTT and labeling of adipose derived multipotent stromal cell cultures by vital fluorescent dye tests in vitro. Comparative study of these scaffolds biocompatibility with a control samples, produced from the commercial “medical grade” polylactide counterpart, enable one to recommend the developed materials for applications in tissue engineering.
Keywords: medical grade polymers, bioresorbable porous scaffolds, tissue engineering, supercritical carbon dioxide.
Antonov Evgeny — Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences (142190 Moscow, Troitsk, Pionerskaya St., 2), PhD (phys-math), leading researcher, expert for scopes of laser and supercritical fluid technologies in biomedicine. E-mail: e.n.antonov@mail.ru.
Bukharova Tatyana — “Medico-genetic scientific center”, PhD (biology), (115478, Moscow, Moskvorechye St., 1), leading researcher, expert in gene and cellular technologies and tissue engineering. E-mail: bukharova-rmt@yandex.ru.
Dunaev Andrey — Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences (142190 Moscow, Troitsk, Pionerskaya St., 2), junior researcher, specialist for supercritical fluid technologies in biomedicine. E-mail: dunaewan@gmail.com.
Krotova Larisa — Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences (142190 Moscow, Troitsk, Pionerskaya St., 2), researcher, expert for scanning electron microscopy and scopes of supercritical fluid technologies in biomedicine. E-mail: krollar@yandex.ru.
Nifant’ev Ilya — M.V. Lomonosov Moscow State University (119991, Moscow, Leninskie Gory, 1), Dr Sci (chem), professor, expert in the field of homogeneous catalysis, bioresorbable materials. E-mail: ilnif@yahoo.com.
Popov Vladimir — Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences (142190 Moscow, Troitsk, Pionerskaya St., 2), Dr Sci (phys-math), head of laboratory, expert in laser and supercritical fluid technologies in biomedicine. E-mail: popov@laser.ru.
Shlyakhtin Andrey — M.V. Lomonosov Moscow State University (119991, Moscow, Leninskie Gory, 1), PhD (chem), researcher, expert in polymeric materials. Email: shlyahtinav@mail.ru.
Reference citing
Antonov E. N., Bukharova T. B., Dunaev A. G., Krotova L. I., Nifant’ev I. E., Popov V. K., Shlyakhtin А. V. Novye “starye” polilaktidy dlya tkaneinzhenernyh konstrukcij [New “old” polylactides for tissue engineering constructions]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 14 – 26.
The low-temperature aging of ceramics
on the basis of tetragonal zirconiа stabilized by cations
of yttrium and ytterbium
L. I. Podzorova, S. A. Titov, A. A. Il’icheva, N. A. Michalina,
O. I. Pen’kova, L. I. Shvorneva , V. E. Gubareva, T. N. Penkina
In this paper, we studied the effect of low-temperature aging керамик by Y-TZP and Yb-TZP. It is shown that the effect of lowtemperature instability of phase structure investigated керамик, corresponds to the near-surface phenomena which more are found in ceramics (Y-TZP). The ion of Yb+3 has exerted positive impact on stability of phase structure and strength properties of ceramics. The conducted research is directed to adaptation of ceramics on basis T-ZrO2 to medical requirements.
Key words: ceramics, zirconiа, phase structure, strength properties, atomic force microscopy.
Podzorova Ludmila — A. A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (Leninsky prospect, 49, Moscow, 119991, Russia), PhD (Chem), leading researcher, expert in physical chemistry of inorganic materials, materials science, ceramics. E-mail: ludpodzorova@gmail.com.
Titov Sergey — Emanuel Institute of Biochemical Physics of the Russian Academy of Sciences (Russia, 119334, Moscow, Kosygina st., 4.), PhD (Chem), leading researcher, expert in the field of physics and atomic force microscopy.
Il’icheva Alla — A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (Leninsky prospect, 49, Moscow, 119991, Russia), senior research associate, expert in inorganic chemistry, synthesis of materials.
Michaylina Nina — A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (Leninsky prospect, 49, Moscow, 119991, Russia), research associate, expert in the field of inorganic chemistry, synthesis of materials.
Pen’kova Olga — A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (Leninsky prospect, 49, Moscow, 119991, Russia), research associate, expert in technology of ceramics.
Shvorneva Ludmila — A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (Leninsky prospect, 49, Moscow, 119991, Russia), PhD (Chem), leading researcher, expert in physical chemistry of solid body, X-ray phase analysis, died in 2016.
Gubareva Valeria — A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (Leninsky prospect, 49, Moscow, 119991, Russia), junior researcher, specialist in field of inorganic chemistry, synthesis of materials.
Penkina Tatiana — A.A. Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (Leninsky prospect, 49, Moscow, 119991, Russia), research associate, expert in analytical chemistry.
Reference citing
Podzorova L. I., Titov S. A., Il’icheva A. A., Michalina N. A.,
Pen’kova O. I., Shvorneva L. I., Gubareva V. E., Penkina T. N. Nizkotemperaturnoe starenie keramiki na osnove tetragonal'nogo dioksida cirkoniya, stabilizirovannogo kationami ittriya i itterbiya [The low-temperature aging of ceramics on the basis of tetragonal zirconiа stabilized by cations of yttrium and ytterbium]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 27 – 34.
Physico-chemical properties and structure of aerogel type composites on the basis polyvinyl alcohol/carbon black
O. A. Kokhanovskaya, G. I. Razdiakonova, V. A. Likholobov
The porous structure and physico-chemical properties of aerogel type composites on the basis polyvinyl alcohol/carbon black obtained by gas cryotreatment of foam composite were studied. Materials more than 50 % consist of carbon, have a true density of not less than 0.79 g/cm3 (bulk density less than 0.27 g/cm3). The molecular weight influence of polyvinyl alcohol, and the sodium tetraborate presence, not influence of carbon black on size macroporous aerogel type composites is established. The effect of the specific surface area of carbon black and medium size macropores aerogel type composites on their specific surface is established. The thermal stability of the materials does not depend on the composition and synthesis conditions and ranges 260 – 280 °C. The thermal conductivity of the aerogel type composites on the basis polyvinyl alcohol / carbon black is in the range 33 – 59 mW/(m·K). These materials are recommended for their application as heat insulators.
Keywords: aerogel type materials, carbon black, polyvinyl alcohol, porous structure, specific surface area.
Kokhanovskaya Olga — Institute of Hydrocarbon Processing (644040 Omsk, Russia, Neftezavodskaya st., 54), research associate, PhD (chem), specialists in the field of physical chemistry of carbon materials. E-mail: kokolga@yandex.ru.
Razdiakonova Galina — Institute of Hydrocarbon Processing (644040 Omsk, Russia, Neftezavodskaya st., 54), senior researcher, PhD (chem), specialists in the field of physical chemistry of carbon materials. E-mail: galina-omsk@mail.ru.
Likholobov Vladimir — Institute of Hydrocarbon Processing (644040 Omsk, Russia, Neftezavodskaya st., 54), head of laboratory of Synthesis of functional carbon materials, corresponding member of RAS, expert in chemical design supported heterogeneous catalysts. E-mail: val@ihcp.ru.
Reference citing
Kokhanovskaya O. A., Razdiakonova G. I., Likholobov V. A. Fiziko-himicheskie svojstva i struktura kompozicionnyh materialov aehrogel'nogo tipa polivinilovyj spirt/tekhnicheskij uglerod [Physico-chemical properties and structure of aerogel type composites on the basis polyvinyl alcohol/carbon black]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 35 – 42.
Formation of fine-grained NbC structure in Cu – NbC – WC composite alloys
L. E. Bodrova, A. B. Shubin
The composite alloys Cu – NbC – WC were synthesized with NbC content from 5.0 to 18.2 wt.% and WC content of 1.8 – 15 wt.%. The alloys were prepared by the copper melt impregnation into compacted and non-compacted NbC and WC powder mixes. The mixes were prepared by quartering of powders with initial particles sizes of 5 – 200 µm for NbC and 3 – 300 µm for WC. The crucibles filled by “copper melt – carbides powders mix” compositions were subjected to low-frequency (80 Hz) longitudinal vibration in the electric resistance furnace at 1300 °C. The treatment time was about 10 min; argon was used as the protective atmosphere. Then crucibles removed from the furnace were air cooled. Further the metallographic sections were prepared. The alloys structure peculiarities, phase and elemental compositions of the phases were investigated. It was shown that NbC forms highly dispersed inclusions (≤ 1 – 2 µm) and all the carbide particles are segregated from each other by the matrix material and do not have visible pores on the phase boundaries with copper.
Keywords: copper, niobium carbide, tungsten carbide, liquid-phase impregnation, composite material, structure.
Bodrova Lyudmila — Institute of metallurgy Ural Branch of RAS (Ekaterinburg, 620016, st. Amundsen, 101), PhD (chem.), senior researcher, specialist in the development and research of the structure and properties of composite materials. E-mail: berseneval@mail.ru.
Shubin Alexey — Institute of metallurgy Ural Branch of RAS (Ekaterinburg, 620016, st. Amundsen, 101), Dr Sci (Chem), head of laboratory of Physical chemistry of metallurgical melts, specialist in the field of metallic and ionic melts physical chemistry. E-mail: shun@imet.mplik.ru.
Reference citing
Bodrova L. E., Shubin A. B. Formirovanie tonkodispersnoj struktury NbC v kompozicionnyh splavah Cu – NbC – WC [Formation of fine-grained NbC structure in Cu – NbC – WC composite alloys]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 43 – 50.
Application of the filler composite rods based on babbitt alloy B83 for production of antifriction coatings by arc welding
R. S. Mikheyev, N. V. Kobernik, I. E. Kalashnikov, L. K. Bolotova,
P. А. Bykov, L. I. Kobeleva, A. G. Kolmakov
The tribological properties of antifriction composite coatings produced by arc welding on a steel substrate have been studied. The using of the composite filler rods based on babbitt alloy B83 containing submicron particles of boron, boron carbide and silicon carbide particles of micron sizes, allows to obtain the coatings which have coefficients of friction on the 20 – 40 % smaller with increasing wear resistance by 20 – 35 % compared with the coating produced with the using of the same filler rods from babbitt B83.
Keywords: babbitt alloy B83, reinforcing particles, arc welding, friction coefficient, wear resistance.
Mikheyev Roman — Bauman Moscow State Technical University (105005, Moscow, 2 Bauman st., 5), PhD, associated professor, specialist in joining of new construction materials. E-mail: mikheev.roman@mail.ru.
Kobernik Nicolay — Bauman Moscow State Technical University (105005, Moscow, 2 Bauman st., 5), PhD, associated professor, specialist in joining of new construction materials. E-mail: koberniknv@yandex.ru.
Kalashnikov Igor — A.A. Baikov Institute of Metallurgy and Material Science of RAS (119334, Moscow, Leninsky pr., 49), DrSci (Eng.), leading researcher, specialist in science of composite materials. E-mail: kalash2605@mail.ru.
Bolotova Ludmila — A.A. Baikov Institute of Metallurgy and Material Science of RAS (119334, Moscow, Leninsky pr., 49), senior researcher, specialist in science of composite materials. E-mail: l.bolotova@mail.ru.
Bykov Pavel — A.A. Baikov Institute of Metallurgy and Material Science of RAS (119334, Moscow, Leninsky pr., 49), DrSci (Eng.), researcher, specialist in obtaining of composite materials.
Kobeleva Lubov — A.A. Baikov Institute of Metallurgy and Material Science of RAS (119334, Moscow, Leninsky pr., 49), PhD (Eng), leading researcher, specialist in tribology. E-mail: likob@mail.ru.
Kolmakov Alexey — A.A. Baikov Institute of Metallurgy and Material Science of RAS (119334, Moscow, Leninsky pr., 49), corresponding member of RAS, DrSci (Eng.), deputy director, specialist in science of composite materials. E-mail: kolmakov@imet.ac.ru.
Reference citing
Mikheyev R. S., Kobernik N. V., Kalashnikov I. E., Bolotova L. K.,
Bykov P. А., Kobeleva L. I., Kolmakov A. G. Primenenie naplavochnyh prutkov iz kompozicionnyh materialov na osnove babbita B83 dlya polucheniya antifrikcionnyh pokrytij metodom dugovoj naplavki [Application of the filler composite rods based on babbitt alloy B83 for production of antifriction coatings by arc welding]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 51 – 58.
Preparation and investigation of properties
of nanocomposite thermoplastic elastomers
on the basis of isotactic polypropylene
N. I. Kurbanova, N. А. Alimirzoyeva, A. M. Kuliyev,
T. I. Medintseva, O. P. Kuznetsova, E. B. Prut
It has been investigated the influence of additions of metal-containing nanofillers including nanoparticles of copper oxide stabilized on the various polymer matrices: polyethylene (PE) and acrylonitrile butadiene thermoplast (ABS), on peculiarity of properties of thermoplastic elastomers of mixture and dynamically vulcanized on the basis of isotactic polypropylene (PP) and ethylene propyl diene elastomer (EPDR) by methods of X-ray phase analysis (RFA) and infrared spectroscopy (IRS). It has been shown that non-polar PE-matrix favors creation of fine-crystalline structure of composition, in connection of which its properties are improved; polar ABS-matrix forms permolecular formation heterogeneous on types and sizes, i.e. macromolecules ABS are located as separate domains in matrix PP/EPDR, in connection of which the physical-mechanical properties of composition are deteriorated.
Keywords: thermoplastic elastomers, isotactic polypropylene, ethylene propylene diene elastomer, metal-containing nanofillers, PE and ABS-matrices, physical-mechanical properties, RFA-analysis, IR-spectroscopy
Kurbanova Nushaba Ismail — Institute of Polymer Materials of Azerbaijan National Academy of Sciences (Az5004, S.Vurgun Str, 124, Sumgayit, Azerbaijan), head of laboratory, Dr Sci (Chem), Specialist in the field of development of composition materials and nanocomposites based on elastomers and thermoplastics and their binary mixtures. E-mail: ipoma@science.az.
Kuliev Azer Mamed — Institute of Polymer Materials of Azerbaijan National Academy of Sciences (Az5004, S.Vurgun Str, 124, Sumgayit, Azerbaijan), Ph.D, senior research worker, specialist in the field of development of composition materials based on elastomers and thermoplastics. E-mail: ipoma@science.az.
Alimirzoeva Naida Amanulla — Institute of Polymer Materials of Azerbaijan National Academy of Sciences (Az5004, S.Vurgun Str, 124, Sumgayit, Azerbaijan), postgraduate student, specialist in the field of development of composition materials. E-mail: ipoma@science.az.
Medintseva Tatyana — N.N.Semenov Institute of Chemical Physics of RAS (119991, Kosigin Str, 4, Moscow, Russia), Ph.D, senior research worker, specialist in the field of development of composition materials based on elastomers and thermoplastics. E-mail: icp@chph.ras.ru.
Kuznetsova Olga — N.N.Semenov Institute of Chemical Physics of RAS (119991, Kosigin Str, 4, Moscow, Russia), Ph.D, senior research worker, specialist in the field of development of composition materials based on elastomers and thermoplastics. E-mail: icp@chph.ras.ru.
Prut Eduard — N.N.Semenov Institute of Chemical Physics of RAS (119991, Kosigin Str, 4, Moscow, Russia), head laboratory, Dr Sci (Chem), specialist in the field of development of composition materials and nanocomposites based on elastomers and thermoplastics and their binary mixtures. E-mail: icp@chph.ras.ru.
Reference citing
Kurbanova N. I., Alimirzoyeva N. А., Kuliyev A. M.,
Medintseva T. I., Kuznetsova O. P., Prut E. B. Poluchenie i issledovanie svojstv nanokompozitnyh termoplastichnyh ehlastomerov na osnove izotakticheskogo polipropilena [Preparation and investigation of properties of nanocomposite thermoplastic elastomers on the basis of isotactic polypropylene]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 59 – 65.
High-temperature oxidation of iron using oxidative
constructing approach
V. Yu. Zufman, S. V. Shevtsov, A. I. Ogarkov, I. A. Kovalev,
K. B. Kuznetsov, A. A. Ashmarin, N. A. Ovsyannikov,
N. N. Dergunova, S. K. Rodionova,
A. S. Chernyavskii, K. A. Solntsev
It is found that in the temperature range 750 – 850 °C The kinetics of oxidation of iron using oxidative constructing approach described by a parabolic law. Formed compact oxide ceramics has a uniform thickness, which is 7 mm at 850 °C for 14 days. It is found that with increase of volume of the initial metallic sample, rate of oxidation of iron is decreased. Obtained at 850 °C for 14 days ceramics is characterized by a layered structure.
Keywords: iron, hematite, magnetite, wustite, oxidative constructing, oxidation, kinetics, structure.
Zufman Valerii — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskiy prosp., 49), junior researcher, specialist in the field of inorganic chemistry and materials science. E-mail: vyuz@yandex.ru.
Shevtsov Sergei — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskii prosp., 49), Ph.D. (Chem), researcher, specialist in the field of inorganic chemistry and materials science. E-mail: shevtsov_sv@mail.ru.
Ogarkov Aleksandr — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskiy prosp., 49), junior researcher, specialist in the field of inorganic chemistry and materials science. E-mail: ogarkov_al@rambler.ru.
Kovalev Ivan — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskiy prosp., 49), junior researcher, specialist in the field of inorganic chemistry and materials science. E-mail: vankovalskij@mail.ru.
Kuznetsov Konstantin — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskiy prosp., 49), Ph.D. (Chem), researcher, specialist in the field of inorganic chemistry and materials science. E-mail: ku-zma@yandex.ru.
Ashmarin Artem — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskiy prosp., 49), Ph.D. (Eng), senior researcher, specialist in the field of X-ray analysis. E-mail: ashmarin_artem@list.ru.
Ovsyannikov Nikolai — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskiy prosp., 49), Ph.D. (Chem), senior researcher, specialist in the field of inorganic chemistry and materials science. E-mail: andreych_01@mail.ru.
Dergunova Nadezhda — Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskii prosp., 49), researcher, specialist in the field of elemental analysis of natural, industrial facilities, and metallurgical products. E-mail: kazenas@imet.ac.ru.
Rodionova Svetlana — Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskii prosp., 49), researcher, specialist in the field of atomic-emission analysis. E-mail: kazenas@imet.ac.ru.
Chernyavskii Andrei — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskiy prosp., 49), Ph.D. (Eng), senior researcher, specialist in the field of inorganic chemistry and materials science. E-mail: andreych_01@mail.ru.
Solntsev Konstantin — A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (Russia, Moscow, 119334, Leninskiy prosp., 49), Dr Sci (Chemical), Professor, academician, head of laboratory, director, specialist in the field of inorganic chemistry and materials science. E-mail: imet@imet.ac.ru.
Reference citing
Zufman V. Yu., Shevtsov S. V., Ogarkov A. I., Kovalev I. A., Kuznetsov K. B.,
Ashmarin A. A., Ovsyannikov N. A., Dergunova N. N., Rodionova S. K.,
Chernyavskii A. S., Solntsev K. A. Vysokotemperaturnoe okislenie zheleza v ramkah podhoda okislitel'nogo konstruirovaniya [High-temperature oxidation of iron using oxidative constructing approach]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 66 – 71.
Combustion synthesis of mica-crystalline materials based
on fluophlogopite with mineral raw materials
and aluminum production waste
V. E. Loryan, A. R. Kachin, V. I. Uvarov
The paper considers possible use of aluminum production waste (recycled cryolite — Na3AlF6) and quartz sand (SiO2) as reagents in synthesis of mica-crystalline materials based on fluophlogopite at ambient conditions. The combustion process is shown to depend on the energy additive in the initial mixture and occur with 2 – 5 mm/s rate at the temperature range of ~700 up to 1600 °C. The conditions which allow synthesizing fluophlogopite with the final product melting in the combustion wave or without it have been determined. The possibility of synthesizing materials with up to 35 % open porosity is demonstrated. It appeared to be possible to synthesize items by direct method from dense and porous materials based on SHS-fluogopite. The material based on monoclinic sodium fluophlogopites of NaMg3AlSi3O10F2 and Na4Mg6Al4Si4O20F4 compositions was obtained. The investigation results can be used to develop the SHS technology of item production from mica-crystalline materials.
Keywords: SHS, pyrogenic synthesis, fluophlogopite, items, mineral raw materials, aluminum production waste.
Loryan Vazgen — Institute of Structural Macrokinetics and Materials Science RAS (Academician Osipyan str., 8, Chernogolovka, Moscow Region, 142432, Russia), Dr.Sci., head of laboratory, specialist in the field of self-propagating high-temperature synthesis and materials science. E-mail: loryan@ism.ac.ru.
Kachin Alexander — Institute of Structural Macrokinetics and Materials Science RAS (Academician Osipyan str., 8, Chernogolovka, Moscow Region, 142432, Russia), Ph.D., senior researcher, specialist in the field of self-propagating high-temperature synthesis and materials science. E-mail: kachin@ism.ac.ru.
Uvarov Valery — Institute of Structural Macrokinetics and Materials Science RAS (Academician Osipyan str., 8, Chernogolovka, Moscow Region, 142432, Russia), Ph.D., leading researcher, specialist in the field of self-propagating high-temperature synthesis and materials science. E-mail: uvar@ism.ac.ru.
Reference citing
Loryan V. E., Kachin A. R., Uvarov V. I. Sintez v rezhime goreniya slyudokristallicheskih materialov na osnove ftorflogopita s ispol'zovaniem mineral'nogo syr'ya i othodov alyuminievogo proizvodstva [Combustion synthesis of mica-crystalline materials based on fluophlogopite with mineral raw materials and aluminum production waste]. Perspektivnye Materialy — Advanced Materials (in Russ), 2017, no. 2, pp. 72 – 78.
