Materials Literature
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This paper proposes a method capable of reproducing the particular operating conditions of a hot strip mill and predicting the evolution of the main electrical variables that are involved from both the characteristics of the steel to be milled and the specific features of the rolling mill. The method analyses the load…
Silicone rubber is widely used in the outdoor insulation for its hydrophobicity, at the same time, superhydrophobic surface with self-clean property is more ideal for outdoor insulating material. This paper reports an efficient way to fabricate the superhydrophobic silicone rubber whose contact angle reaches 151° and…
This paper is a first step towards the evaluation of the life and reliability of HVDC cable systems in the presence of voltage polarity reversals. It combines a physical-phenomenological life model for HVDC cables subjected to voltage polarity with a recently-developed life model for HVDC cables subjected to load cycl…
An efficient recycling of end-of-life products is of crucial interest from an economical and ecological point of view. However, the near infrared spectroscopy often used for the optic sorting processes is limited because of the absorption of carbon black present in black plastics and as it only sorts as a function of…
Janus gold nanoparticles (JPs) of ∼4 nm-diameter half functionalized with 1-hexanethiol as a hydrophobic capping ligand exhibit significantly higher interfacial activity, reproducibility and rheological response when the other half is functionalized with 1,2-mercaptopropanediol (JPs-MPD) than with 2-(2-mercaptoethoxy)…
Abstract Novel homoleptic octaiodinated bis(phthalocyaninato)terbium(III) complex Tb(PcI 4 ) 2 ( 1 ) and its heteroleptic counterpart tetraiodinated TbPc(PcI 4 ) have been synthesized in their neutral forms and fully characterized. Their magnetic properties have been evaluated by standard magnetometry, and the results…
We present an optical setup for spectroscopic measurements in the infrared and of Raman shift under high pressure and at low temperature. Using a membrane-driven diamond anvil cell, the pressure can be tuned in situ up to 20 GPa and the temperatures ranges from room temperature down to 18 K in transmission mode and 13…
Highly hydrophobic materials are of interest in many scientific and technological areas. To improve surface properties of polydimethylsiloxane (PDMS), PDMS sheets were surface fluorinated in a laboratory vessel using a F2/N2mixture with 12.5% F2by volume at about 55 °C under 0.1 MPa for different times of 15, 30, and…
Lead zirconate titanate (PZT) samples were prepared near morphotropical phase boundary (MPB) (i.e., Pb(Zr0.52-xMnxTi0.48)O3(x = 0, 0.02, 0.06, 0.10)). These samples were prepared using solid-state reaction technique. Formation of compounds was confirmed by X-ray diffraction (XRD), as a part of our preliminary structur…
The structural, elastic, anisotropy, and thermodynamic properties of R3-B_2C were investigated using first-principles density functional calculations. The calculated equilibrium parameters are in good agreement with the available theoretical results. The elastic constants, elastic modulus, and elastic anisotropies of…
The twinning activity in random textured cast magnesium during monotonic, room temperature tension and compression tests was monitored by neutron diraction. Decrease of integrated intensity which characterizes the twinned volume fraction of selected reections was compared to its Schmid factor. The comparison shows tha…
Topographic and wetting properties of Ti-6Al-4V were modified by nanosecond laser irradiation. Three types of microstructures were created after the laser processing, the irradiated samples initially showed hydrophilic behavior, however, over time, these surfaces became hydrophobic with contact angles above 90°, and t…
The model of a three-terminal thermoelectric refrigerator with ideal tunneling quantum dots is established. It consists of a cavity connected to two quantum dots embedded between two electron reservoirs at different temperatures and chemical potentials. According to the Landauer formula the expressions for the heat cu…
The evolution of the structure of bronze containing 7.4 wt. % Sn under severe plastic deformation by high pressure torsion has been studied by transmission electron microscopy and microhardness measurements. The thermal stability of the structures obtained has been investigated in subsequent annealing. It is demonstra…
The aim of this paper is to propose the probabilistic neural network (PNN) model for classification partial discharge (PD) patterns, which comprised of corona discharge at high voltage side and at low voltage side in air, corona discharge at high voltage side and at low voltage side in mineral oil and surface discharg…
Summary High‐temperature liquid chromatography (HT‐HPLC) using solvent gradients enables to separate polypropylene (PP) according to tacticity. Varying the combination of adsorption and desorption promoting solvent the three stereochemical variants iPP, aPP and sPP can be selectively retained in a Hypercarb™ column. T…
Detection of decomposition products is a newly-emerging method for the condition diagnosis of SF6-insulated equipment. Based on the two grading structures that are commonly adopted in SF6-insulated current transformers (CT), three models consisting of the needle-to-plane, the ball-to-plane, and the plane-to-plane were…
Corona Inception voltage (CIV) / breakdown voltage increases when the barrier is placed anywhere from needle tip to the 20% of the needle-plane electrode gap above which a marginal reduction in breakdown voltage is observed but its value is much higher than the breakdown strength of the electrode gap without barrier.…
The dynamical mean-field theory (DMFT) has become a standard technique for the study of strongly correlated models and materials overcoming some of the limitations of density functional approaches based on local approximations. An important step in this method involves the calculation of response functions of a multio…
Abstract This study involved maximizing the conversion of palm‐based methyl palmitate to esteramine, an intermediate for esterquats via transesterification with triethanolamine, aided by Ca–Al as a heterogeneous catalyst in a 500‐ml reaction unit. The effect of process parameters on the conversion was investigated. Th…