Materials Literature
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The topological surface states of mercury telluride (HgTe) are studied by ab initio calculations assuming different strains and surface terminations. For the Te-terminated surface, a single Dirac cone exists at the Γ-point. The Dirac point shifts up from the bulk valence bands into the energy gap when the substrate-in…
The formation of an adatom adsorption structure in dynamic force microscopy experiment is shown as a result of the spontaneous appearance of shear strain caused by external supercritical heating. This transition is described by the Kelvin-Voigt equation for a viscoelastic medium, the relaxation Landau-Khalatnikov equa…
The evolution of topology of the B-C phase diagram has been studied at pressures up to 24 GPa using models of phenomenological thermodynamics with interaction parameters derived from experimental data on phase equilibria at high pressures and high temperatures.
The magnetocaloric effect in the metamagnetic Ni 43 Mn 37.9 In 12.1 Co 7 Heusler alloy is directly studied experimentally under the adiabatic and quasi-isothermal conditions in a magnetic field with induction of up to 14 T.
We construct exact Kohn-Sham potentials for the ensemble density-functional theory (EDFT) from the ground and excited states of helium. The exchange-correlation (XC) potential is compared with the quasi-local-density approximation and both single determinant and symmetry eigenstate ghost-corrected exact exchange appro…
A bulk diluted magnetic semiconductor (Sr,K)(Zn,Mn) 2 As 2 was synthesized with decoupled charge and spin doping. It has a hexagonal CaAl 2 Si 2 -type structure with the (Zn,Mn) 2 As 2 layer forming a honeycomb-like network. Magnetization measurements show that the sample undergoes a ferromagnetic transition with a Cu…
We study the detailed temperature and composition dependence of the resistivity, , and thermopower, S ( T ), for a series of layered bismuth chalcogenides Bi 2 Te 3− x Se x , and report the stoichiometry dependence of the optical band gap. In the resistivity of the most compensated member, Bi 2 Te 2.1 Se 0.9 , we find…
We propose a mid-infrared device based on thermocouple optical antennas for light sensing and energy harvesting applications. We numerically demonstrate that antennas are able to generate low-power dc signals by beneficing of the thermoelectric properties of the metals that constitute them. We theoretically evaluate t…
Atomically sharp oxide heterostructures often exhibit unusual physical properties that are absent in the constituent bulk materials. The interplay between electrostatic boundary conditions, strain and dimensionality in ultrathin epitaxial films can result in monolayer-scale transitions in electronic or magnetic proper…
Poly (∊-caprolactone), (PCL) or simply polycaprolactone as it is usually referred to, is a synthetic biodegradable aliphatic polyester which has attracted considerable attention in recent years, notably in the biomedical areas of controlled-release drug delivery systems, absorbable surgical sutures, nerve guides, and…
The development of nanocellulose has attracted significant interest in the last few decades due to its unique and potentially useful features. Novel nanocelluloses boost the strongly expanding field of sustainable materials and nanocomposites. Their potential areas of application include reinforcing agents in nanocomp…
The gas jets of variable and non-variable angle four-hole oxygen lances for 50 t BOF have been numerically simulated by using Fluent software to study the effect of inclining angle of jet nozzles on oxygen jet flow field and syncretizing length of jet-flows. Results show that in distance near the outlet of jet-nozzle…
The production flow sheet for 5. 5 mm wire rod of high alloying corrosion resistant steel G7624 ( /% : ≤ 0.08C, ≤ 0.75Si, 11.5~13.5Mn, ≤ 0.045P, ≤ 0.010S, 13.0-14.0Cr, 0.5-1.0Ni, 1.5-2.0Cu, 0.160-0.210N) is 45 t dephosphorized metal-(50 t EAF)-60 t AOD-LF-150 mm x 150 mm billet concasting-grinding-rolling process. Wit…
The static and dynamic continuous cooling transformation (CCT) curves, structure (11% martensite + 89% feiTite) and mechanical properties (tensile strength 682 MPa) of developed low silicon and Nb-Ti Microalloying dual phase steel (/% : 0.082C, 0.15Si, 1.20Mn, 0.010P, 0.002S, 0.020Nb, 0.015Ti, 0.045Al, 0.0035N) have b…
A three-dimensional mathematical model for consumable-electrode vacuum melting process of 14Cr-13Co- 5Mo-2Ni gear steei (/% ： 0.014C, 0.26Si, 0.17Mn, 13.79Cr, 12.69Co, 4.66Mo, 2.00Ni, 0.53Al) diameter 290 mm, 9 t ingot has been established to study the effect of cooling water pressure, electric current and smelting ra…
The influence of LF binary refining slag 60CaO-40SiO2 and [O] 27 x 10-6as well as ternary refining slag 47.5 - 50. 2CaO-41. 8 ~45. 7SiO2-5 ~8Al2O3and [O] 12 x 10-6~ 14 x 10-6kinds, morphology, size and number of inclusions in φ 5. 5mm coil produced by BOF-LF-CC-high speed wire rolling process at steelworks and on wire…
The carbide phase in grain and at grain boundary, microstructure and mechanical properties of heat resistant steel 5Cr21Mn9Ni4Nb2WN of status forged, status solution-treated at 1200 °C for 120 min water cooled, + at 1030 °C for 20 ~ 240 min water cooled, and status solution-treated again at 1220 °C for 20 -240 min wat…
The Φ80 mm rolled product of high quality gear steel 20MnCr5H-l for car (/% ： 0.17-0.22C, ≤ 0.12Si, 1.0~1.5Mn, ≤ 0.035P, 0.015-0.035S, 0.8-1.3Cr, ≤ 0.0020O, 0.015-0.045A1) has been developed by 40 t EAF- LF- VD- 3.7 t ingot casting-rolling process. With the process measures including controlling EAF end [P] W 0. 015%…
The vibrating-exciting nucleation device consists of exciting nucleation rod, up-down, vibrating, rod cooling, damping and temperature measuring system. During 45 t Q345B steel slab ingot casting, the vibrating-exciting nucleation bar with height 200 mm is located at center of casting ingot mould submerged in liquid 5…
The production flow sheet for oil casing tube steel (/% ： 0.26-0.29C, 0.25-0.35Si, 0.40-0.50Mn, ≤0.009P, ≤0.004S, 0.95-1.05Cr, 0.09-0.11V, 0.02-0.04Al, 0.015-0.020Ti, ≤0.0060N) is hot metal pretreatment-120 t BOF-argon blowing-LF-CaSi wire feeding-RH-Alloying-CaSi wire feeding-soft argon blowing-Φ200 mm round bloom ca…