Materials Literature
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The parameters of mechanical processes and following thermal treatments have great impact on the microstructure. The effects were examined using Cu-ETP pure copper specimens which were cold rolled and annealed in multiple steps. The evolution of the grain boundary character distribution (GBCD) is discussed using the d…
Research conducted within this thesis was performed in the framework on industry university research agreement. The objective of this research is to determinate the corona onset voltage in non-uniform geometries to avoid corona appearance to feasibly assist the design phase of EHV and UHV substation connectors and ins…
Layered structure LiNi₁/₃Mn₁/₃Co₁/₃O₂ (LNMC) powders were synthesized by a gel-combustion method and were calcined at 750, 800, 900 and 1000 °C, respectively. The analysis of phase composition and microstructure results show that the prepared LNMC powders have the layered structure with high order level and low cation…
The knowledge of the properties of the process of cutting aluminium is getting more and more important nowadays, particularly because of the large number of fields where aluminium alloys can be used, such as in automotive, war and aerospace industries. One of the most widespread index numbers used for measuring surfac…
Identified the basic requirements for the quality of sulfamic acid in all areas of its application. Was described by a method of industrial production technology sulfamic acid. There was designed laboratory installation to study the crystallization process. The paper studies the influence of temperature and cooling ra…
The numerical designing technologies of today's industrial design and manufacturing practice are increasingly coming into use in construction processes of products using welded joints. During various welding procedures in the material complex thermic procedures take place. The distribution of these thermal influences…
Various CuₓO catalysts with different special microstructures were synthesized using a simple one-step hydrothermal method by controlling the reaction time and temperature conditions. Scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM) were used to observe the morphologies…
Non-fluorinated polyurethane (PU)/SiO 2 -nanoparticles (SNPs) composite nanowebs with superhydrophobic and breathable properties were prepared by electrospinning, using n-dodecyltrimethoxysilane (DTMS) as water repellent chemicals.The fiber morphology was examined by field emission scanning electron microscopy.The ave…
We used low-cost pomelo peel (PP) as a biomass-derived porous activated carbon to fabricate a high energy density symmetric supercapacitor. The porous activated carbon was prepared from the pomelo peel (PP) via pyrolysis and a KOH activation process, followed by heat treatment under an argon atmosphere. The resulting…
We report on the successful aqueous processing of a lead free piezoelectric 0.5Ba(Zr0.2Ti0.8)O-3-0.5( Ba0.7Ca0.3)TiO3 (BZT-BCT) composition with the final functional properties of the materials unaffected by the various processing steps involved. X-ray diffraction results show a single tetragonal perovskite crystallin…
Ce travail concerne la synthèse de copolymères thermoassociatifs hydrosolubles par copolymérisation radicalaire contrôlée par transfert de chaîne par addition-fragmentation réversible RAFT/MADIX. Ces polymères, de type peignes statistiques, sont constitués d'un squelette hydrophile poly(acrylamide)-stat-poly(2-acrylam…
The automotive industry use in increating quantities higher strength steels for the load bearing structure of vehicles nowadays, which cause the reduce of the vehicle's weight. The manufacturer apply these steels where need higher strength. For production of the less loaded elements of the bodywork enough use sheets w…
The aim of developers in field of automative industry is to reduce the car weight. Possibility of the decreasing of car weight seems to be using of formed tubes as parts of car body structures loaded mainly. There are some different forming technologies of tube forming, and of the tube expansion. This report presents…
A newly developed RuO₂/rutile-TiO₂ catalyst displays a remarkable activity and stability in N₂O decomposition. The outstanding performance was attributed to the formation of a uniformly coated RuO₂ thin film on rutile-TiO₂.
Изучение фитопланктона 7 озер бассейна Белого моря выявило 105 таксонов Bacillariophyta видового и внутривидового ранга. Среди них 89 видов и разновидностей новых для флоры исследованных водоемов, 7 - для флоры России и 5 форм определены до рода. Максимальное видовое разнообразие отмечено в оз. Топозеро (70 таксонов).…
The work is summary of the sorption investigations involving radionuclides and the geochemical matrix of a deep geological repository for high level radioactive waste. The sorption of Cs + , Ni 2+ , Zn 2+ , Co 2+ . Eu 3+ , Nd 3+ , Th 4+ and (UO 2 ) 2+ was investigated on clay rich rock systems like Boda Claystone Form…
Изучение фитопланктона озер бассейна р. Шуя с помощью сканирующей электронной микроскопии выявило 202 вида и разновидности пеннатных диатомовых водорослей из 53 родов, в том числе 42 новых для флоры Карелии и 12 новых для России. Максимальное видовое разнообразие отмечено в озерах Пряжинское, Вохтозеро и Крошнозеро. Н…
Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
International audience
P-type Bi0.48Sb1.52Te3 alloys added with WSe2 were achieved via the zone melting method. The electrical performance was improved due to the increased carrier concentration, while the lattice thermal conductivity was simultaneously decreased, mainly due to the numerous types of nanoprecipitates produced, such as the se…