New Ta3Ве Phase in the Film Coatings of Tantalum–Beryllium Alloys

Tuleushev, Yu. Zh.; Володин, В. Н.; Жаканбаев, Е. А.

doi:10.1134/s0031918x19040148

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…16,17 The only reported binary Nb-Pb intermetallic compound is Nb 3 Pb, which belongs to the A15 structure and has the same structure as Nb 3 Ge and Nb 3 Sn. 4,[18][19][20][21][22] Nb 3 Pb has been studied as a member of the Nb 3 X series of compounds, but it has been shown to be a non-superconducting substance that can only be synthesized at high pressure and temperature. 21 The Nb-Nb and Nb-Pb bonds in this Nb 3 Pb are considered to be ionic-covalent mixed bonds.…”

Section: Introductionmentioning

confidence: 99%

Scanning the latent phases and superconductivity in the Nb–Pb system at high pressure

Qin

Song

Chen

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 99%

Scanning the latent phases and superconductivity in the Nb–Pb system at high pressure

Qin

Song

Chen

et al. 2023

Phys. Chem. Chem. Phys.

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“…Значительное -от нескольких десятков до сотен градусов -понижение температуры плавления дисперсных частиц различных металлов с уменьшением размеров капель вызвало всплеск интереса исследователей к этой области материаловедения. К настоящему времени выполнено большое количество работ, посвященных влиянию размера частиц на температуру плавления [1][2][3][4][5][6][7][8], термодинамику малых образований [9][10][11][12][13] и структуру материала, получению сплавов при «комнатной температуре», синтезу интерметаллических соединений [14][15][16] и др. Подобные исследования повлекли введение в научный обиход понятия «термофлуктуационное плавление».…”

Section: Introductionunclassified

V–Cd nanoparticle-formed alloys: fabrication, phase composition and structure

Володин

Tuleushev

Kaliyeva

et al. 2023

Izv.VUZ. Tsvet. Met.

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The results of the study of targeted sputtering and deposition of ultrafine vanadium and cadmium particles on substrates that are not heated and shifted with respect to the substrate plasma currents are revealed. As a result of the conducted studies, coatings were obtained in the range with a concentration of cadmium from 9.6 to 88.6 at.%. The critical size of vanadium particles capable of forming alloys with cadmium is 0.6 nm. The concentration limit for the presence of solid solutions of cadmium in vanadium is the cadmium content of ~37 at.%, at a higher cadmium content the film coating is represented by a mixture of cadmium phases and a solid solution of cadmium in vanadium. The dependence of the lattice parameter of α-vanadium on the content of cadmium in it corresponds to the expression: а [nm] = 8·10–4СCd + 0.3707, where СCd is the concentration of cadmium, at.%. On the surface of the sample in the region of solid solutions (31.6 at.% Cd), the presence of threadlike crystals of cadmium was found, the reason for the appearance of which is the lattice pressure of the matrix metal. Annealing of films rich in cadmium (69.5 at.%) in vacuum is accompanied by cracking of the coating and the formation of pores. The latter can be used as a method for obtaining porous vanadium.

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“…Modern technologies also include magnetron sputtering in a vacuum chamber of metal particles (including silver) with subsequent deposition on the surface of the material. The method is based on the use of an anomalous glow discharge in an inert gas, in which positively charged ions formed in the discharge bombard the cathode surface in the erosion zone and knock out metal particles from it, which are then deposited in the form of a thin layer on the surface of the material being processed [7][8][9]. In this case, the high kinetic energy of the particles leaving the cathode surface ensures a good level of adhesion of the resulting film to the substrate.…”

Section: Introductionmentioning

confidence: 99%

Photochemical Metallization: Advancements in Polypropylene Surface Treatment

Serikbayeva,

Satayev,

Koshkarbayeva

et al. 2023

Polymers

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The work was devoted to the development of technology for applying metal coatings to the surface of polypropylene products. At the same time, the main stages of the technology were carried out using the influence of electromagnetic waves of light radiation. So, to obtain an electrically conductive silver layer, after mechanical treatment, etching and activation, the polymer was immersed for several minutes in a solution containing 10–20 g/L of silver nitrate and equivalent amounts of ascorbic acid, and a thin layer of solution was obtained on the surface of the polymer. A sample with such a sorption film was exposed to electromagnetic waves of light radiation at a flux density of 700–1100 W/m2. The small thickness of the sorption film facilitated the penetration of these waves directly onto the polymer surface and ensured the photochemical process of silver reduction with the formation of active centers. At the same time, electromagnetic waves acting on ascorbic acid transferred it to an excited state. As a result, the chemical reduction of silver in the space between the active centers became possible. In this case, the film obtained within 15–20 min had the necessary electrical conductivity. The suitability of these films for galvanic metallization of the polymer surface was shown.

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New Ta3Ве Phase in the Film Coatings of Tantalum–Beryllium Alloys

Cited by 5 publications

References 8 publications

Scanning the latent phases and superconductivity in the Nb–Pb system at high pressure

Scanning the latent phases and superconductivity in the Nb–Pb system at high pressure

V–Cd nanoparticle-formed alloys: fabrication, phase composition and structure

Photochemical Metallization: Advancements in Polypropylene Surface Treatment

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