IOP Conference Series: Materials Science and Engineering

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Fourth interdisciplinary scientific forum with international participation “New materials and promising technologies”

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/011001pmid: N/A

IntroductionFrom November 27 to 30, 2018, the Fourth interdisciplinary scientific forum with international participation “New materials and promising technologies” was held in Moscow in the building of the Presidium of the Russian Academy of Sciences, where topical and applied problems of creating new materials for the future and promising technologies for their processing were discussed. The Forum was held for the fourth time. The Forum was organized by the Council of Young Scientists of the Russian Academy of Sciences and the Coordinating Council for Youth Affairs under the President of the Russian Federation. Co-organizers of the Forum were the Russian Academy of Sciences (RAS), The Russian Chemical Society D.I. Mendeleyev and Institute of Metallurgy and Materials Science. A.A. BaikovaThe Ministry of Science and Higher Education of the Russian Federation and the Russian Foundation of Basic Research supported the Forum.Thematic areas included in the program of the Forum, helped to gather in one place representatives of different interdisciplinary research groups in the area of interest which includes the creation of the fundamentals of materials and their application in various industries. The Forum program was expanded by discussing the problems of introducing scientific developments and interaction of scientists with consumers of scientific results, foundations and development institutions. Additionally, the role of international cooperation, public and educational organizations in the scientific process, and the strategy of popularizing scientific achievements were discussed at the Forum.The scientific sections of the forum covered a wide range of topics on nanomaterials and nanotechnologies, metallurgy, experimental methods of researching materials and structures, ceramic materials, composite and functional materials, structural materials, biocompatible materials, and materials and technologies for green chemistry.The Logo is available in this pdf.

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Peer review statement

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/011002pmid: N/A

All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the proceedings Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.

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Effect of type of ceramic particles on efficiency of gas dynamic spraying and hardness of hybrid coatings AlMg6/C60

Aborkin, A V; Elkin, A I; Evdokimov, I A; Sachkova, N V; Sytschev, A E

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/012001pmid: N/A

The hybrid powders AlMg6/C60 + 10-70 wt.% Al2O3 and AlMg6/C60 + 10-70 wt.% AlN were obtained by the method of mechanical synthesis in a planetary ball mill. These powders were used to create coatings using cold gas-dynamic spraying. The influence of the type and concentration of ceramic reinforcement on the growth efficiency and microhardness of the formed hybrid coatings was studied. It has been found out that the use of ceramic particles of AlN (up to 50 wt.%) as a reinforcement contributes to a more efficient growth of the coating compared to Al2O3. At the same time, the microhardness of coatings reinforced with AlN is lower than that containing Al2O3.

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Analysis of the atomic structure of the amorphous metal alloy Al84Ni6La10

Aleinikova, K B; Zinchenko, E N; Zmeikin, A A

2019 IOP Conference Series Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/012002pmid: N/A

The paper presents an analysis of the atomic radial distribution function of the amorphous metal alloy Al84Ni6La10 based on the fragmentary model. A comparative analysis of the most probable interatomic distances in the alloy and its compounds demonstrated the presence of crystalline nuclei of the following phases: Al3La, AlNi3, Al4La and Al. The crystalline nuclei of the Al4La compound are the smallest (~7-8 Å), while the minimal size of the most nuclei of the other phases is 1-1.5 nm. The following phases were observed in the crystallised alloy: Al11La3, Al3Ni, and Al.

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NMR studies of 3D topological insulators over a large temperature range

Antonenko, A O; Charnaya, E V; Marchenkov, V V; Naumov, S V

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/012003pmid: N/A

Results of NMR measurements of the Bi2Te3 and Bi2Se3 3D topological insulators within the temperature range 11-293 K are presented. Two lines were demonstrated in the 125Te and 77Se spectra over the whole temperature range for single crystals in the c^B0 and c||B0 orientations as well as for Bi2Te3 and Bi2Se3 powders. The observed lines correlated to two non-equivalent positions of chalcogen atoms in the crystalline structure of investigated bismuth chalcogenides. The thermal activated character of charge carriers was found for the Bi2Te3 single crystal and powder. The activation energy was evaluated. It was shown for the Bi2Se3 powder that thermally activated charge carriers did not play the main role in conductivity. The nontrivial behaviour of the 125Te and 77Se NMR spectra for Bi2Te3 and Bi2Se3 single crystals in the orientation c||B0 was found at low temperatures which could not be explained by the orientation dependence of the line shapes and shifts in the topologically trivial semiconductors without structural phase transitions.

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The interaction of zirconium oxide nanoparticles with model binary and complex alloyed nickel alloys containing TiN

Anuchkin, S N; Volchenkova, V A; Kazenas, E K; Andreeva, N A; Penkina, T N

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/012004pmid: N/A

Interaction of exogenous nanoparticles of refractory compounds ZrO2 with model binary and multicomponent nickel alloys containing surfactants - tin were investigated. Shown that the removal of surfactants in the metal after ZrO2 nanoparticles introduction depends from the time of isothermal holding in the induction furnace and alloying elements composition. The complete chemical composition of the alloys has been studied using the method of atomic emission spectrometry with inductively coupled plasma. The contents of various forms of zirconium have been determined. The effect of alloying elements on the change in the ratio of forms have been showed.

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The hexahistidine containing organophosphorus hydrolase enzyme and bacterial cellulose based functional materials

Aslanli, A G; Stepanov, N A; Senko, O V; Maslova, O V; Lyagin, I V; Efremenko, E N

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/012005pmid: N/A

Bacterial cellulose (BC) is a unique biopolymer for creation on its basis functional materials used as drugs, matrices for regenerative therapy, dressings, etc. In this study, the possibility of combining of BC with hexahistidine containing organophosphorus hydrolase (His6-OPH), exhibiting lactonase activity against gram-negative pathogenic bacteria is considered to obtain composite materials with special properties. The dry and wet samples of fibrous BC, impregnated with solutions of the His6-OPH enzyme and various antimicrobial agents were obtained; their catalytic characteristics were investigated. The preservation of the enzymatic activity of the His6-OPH enzyme in the composition of the obtained samples with BC, including after the lyophilization process, has been established. The stabilization of the enzymatic activity of His6-OPH in the composition of fibrous materials in the presence of poly(aspartic) acid and antimicrobial agents is shown.

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Polypropylene composite material and its rheological and mechanical properties depending on the size of the filler CaCO 3

Bilalova, E A; Prut, E V; Kuznetsova, O P

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/012006pmid: N/A

The main idea of this paper is to investigate the influence of the filler sizes on the important composite material‘s properties, such as viscosity, MFR, shear stress, elongation at break and Youngs modulus. Ten compositions of PP/CaCO3 composites were prepared in a two-rotor mixer (Brabender) with calcium carbonate content o 5 - 25 wt. (%). Laser diffraction method was used to analyze sizes of the powder filler, considering it to be approximately spherical. Found out, that with an increase in the concentration of powder filler increases the value of Youngs modulus (E, MPa) and also there is a significant decrease in the elongation at break (ε, %), and the strength also decreases, but rather weakly. Viscosity showed different trends for both sizes at the dependence of concentration with constant shear stress.

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Improved tetrathienoacene synthesis

Skorotetcky, M S; Borshchev, O V; Ponomarenko, S A

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/012007pmid: N/A

This paper describes a method for preparation of 2,6-dibromo-thieno[3,2-b]thieno[2’,3’:4,5]thieno[2,3-d]thiophene (tetrathienoacene), an important building block of conjugated organic materials. The synthesis route involves the preparation of 3-bromothieno[3,2-b]thiophene from 3,4-dibromothiophene, followed by the preparation of the corresponding disulfide and oxidative ring closure to produce tetrathienoacene. The combination and adaptation of various literature methods allowed to increase the total reaction yields in the case of 3-bromothieno[3,2-b]thiophene from 54% to 72% and tetrathienoacene from 27% to 45%.

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Structural–crystallographic and morphological properties of silicon composition of phosphate ore

Pochitalkina, I A; Vinokurova, O V

2019 IOP Conference Series: Materials Science and Engineering

doi: 10.1088/1757-899X/525/1/012008pmid: N/A

In order to identify the prospects for complex processing of high-silicon phosphate by direct acid methods, the properties of the mineral raw material and its insoluble residue were investigated. Clarified literature data on the composition of the original sample. New data were obtained on the chemical composition, morphology, microstructure and optical properties of the siliceous component of the ore.

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