“CABLE AND WIRES” JOURNAL - 2024 #3
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SCIENCE AND TECHNOLOGY
DOI 10.62994/2072-215X.2024.50.13.001
ANISOTROPY OF MAGNETIZATION IN WIRES OF A SUPERCONDUCTING COMPOUND MgB2
Статья посвящается светлой памяти профессора И.А. Руднева (02.1961 - 05.2024)
R.G. Batulin, Cand. Sc. (Physics and Mathematics), Associate Professor, Institute of Physics, Kazan (Privolzhsky) Federal University;
I.A. Rudnev, Dr. Sc. (Physics and Mathematics), Head of Department, National Research Nuclear University “MIFI”;
S.A. Khokhorin, laboratory assistant, Institute of Physics, Kazan (Privolzhsky) Federal University;
A.I. Podlivaev, Cand. Sc. (Physics and Mathematics), Associate Professor, National Research Nuclear University “MIFI”;
S.V. Veselova, Research Engineer, National Research Nuclear University “MIFI”
Abstract. In this study, the magnetization of an industrial multi-strand round MgB2 cable (Columbus Superconductors) and the corresponding hysteresis loops were measured using the method of vibrational magnetometry at various temperatures ranging from 5 to 45 K and magnetic fields up to 5 T. The direction of the applied magnetic field varied from 0 to 90 degrees with respect to the cable axis. The ferromagnetic contribution of Fe and Ni (the nickel alloy sheath) was subtracted, and the magnetization loops due to the diamagnetic contribution of the MgB2 superconducting phase were obtained. Dependencies of Jc(H), as well as the values of hysteresis losses, were calculated from the hysteresis curves at different temperatures. The obtained data are discussed in terms of the anisotropy of the superconducting properties of MgB2 and the influence of the geometric demagnetization factor on the magnitude of magnetization.
Key words: magnesium diboride, high-temperature superconductors, anisotropy, magnetization, hysteresis losses
DOI 10.62994/2072-215X.2024.16.74.002
THE USE OF ALUMINUM ALLOYS IN CABLES FOR NON-STATIONARY INSTALLATION
A.E. Kolykhaev, Head of Sector, JSC VNIIKP;
D.V. Novikov, Cand. Sc. (Engineering), corresponding member of the Academy of Electrotechnical Sciences of the Russian Federation, Division Manager, JSC VNIIKP;
E.S. Sakharova, bachelor, Bauman Moscow State Technical University;
D.A. Kharchenko, Head of Laboratory, JSC VNIIKP
Abstract. The paper examines the properties of aluminum alloy of grade 8176. The corrosion resistance of the alloy in such environments as sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)2), sodium chloride (NaCl), ASTM Oil №3 and in conditions of high humidity (H2O) was analyzed. Experimentally established dependencies show a decrease in the mass of aluminum wire samples during their aging for a certain time in each of the considered environments. Photographs of the sample cross-sections allow visual evaluation of the change in shape and size of the samples. As a result, the corrosion resistance of the alloy of grade 8176 in these environments was assessed. The authors also examined the mechanical properties of individual conductive wires and Class 5 conductive cores according to IEC 60228:2004 from the point of view of meeting the requirements for non-stationary cable products.
Key words: cable, aluminum alloy, chemical composition, wire, wire rod, corrosion resistance, bending
EQUIPMENT AND TECHNOLOGIES
УДК 004.383
DOI 10.62994/2072-215X.2024.45.56.003
D.D. Baranov, student, Minin Nizhny Novgorod State Pedagogical University (Minin University);
A.V. Ponachugin, Cand. Sc (Economics), Assistant Professor, Minin Nizhny Novgorod State Pedagogical University (Minin University);
Abstract. This article deals with the history of the creation and development of Soviet and Russian processors, the current state of the domestic microelectronics production is analyzed using the example of processors produced by the MCST and Elbrus companies, their advantages and disadvantages are identified, as well as the prospects for their further development. The purpose of this article is a retrospective analysis of the development of processors in the USSR and Russia, revealing positive and negative aspects that influence this development.
Key words: processors, microelectronics, modern technologies, digital security, import substitution
ECONOMICS
DOI 10.62994/2072-215X.2024.31.54.004
FACT AND FABLE ABOUT COUNTERFEIT IN THE CABLE INDUSTRY OF RUSSIA
E.B. Vasiliev, Cand. Sc. (Economics), full member of the Academy of Electrotechnical Sciences of the Russian Federation, Chairman of the Board of Directors of JSC VNIIKP, Vice-President of the Electrokabel Association
Abstract. The article concentrates on the analysis of all groups of cable and wire in order to find out the amount of counterfeit products in the total volume of production and to clear up which groups of cable and wire are most susceptible to the presence of defective products in them. An attempt is made to determine the causes of occurrence and presence of counterfeit products, and measures intended to eliminate such products are suggested.
Key words: competition, reputational losses, counterfeit products, competitiveness, state certification, Anticounterfeiting Committee
INDUSTRY NEWS
NEWS OF THE ELECTROCABLE ASSOCIATION
I.A. Ovchinnikova, Dr. Sc. (Engineering), full member of the Academy of Electrotechnical Sciences of the Russian Federation, Director of Research Area – Division Manager, JSC VNIIKP;
A.I. Gusev, Director of the Electrocable Association for information policy
MEETING OF THE SECTION "TELECOMMUNICATION CABLES AND CABLES FOR DATA TRANSMISSION"
MEETING OF THE SECTION "CABLES AND WIRES, COMPONENTS FOR MACHINES, EQUIPMENT AND DEVICES"
JUBILEES
G.I. SMELKOV CELEBRATES HIS 85th BIRTHDAY