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melting, etc ; heat treatment; journals; materials; milling; sampling; Show all 6 Subjects
Abstract:
... α-MgAgSb has been receiving attention as a thermoelectric material due to its high performance at 300–550 K. A MgAgSb sample synthesized by melting the constituent elements is known to contain secondary phases, which can be diminished by long-term heat treatment. However, less effort has been devoted to investigating the secondary phases and exploring an effective synthesis route to improve the sa ...
melting, etc ; composite materials; epoxides; mechanism of action; mixing; thermoplastics; Show all 6 Subjects
Abstract:
... Interleaving fiber reinforced layered composites with thermoplastic veils is a strategy that has been examined by using electrospun fibers of homopolymers as well as their physical mixtures. Separate toughening mechanisms were activated by the individual presence of the physically mixed fibers in previous studies. Here, we show that it is possible to initiate a concerted action of these mechanisms ...
melting, etc ; additives; composite materials; cracking; electrons; journals; manufacturing; microstructure; superalloys; Show all 9 Subjects
Abstract:
... Materials synthesis via additive manufacturing gives unprecedented control over the solidified microstructure. While a number of studies have demonstrated the ability to produce spatially varying microstructures, little work exists to understand the behavior of such “composite” materials. In this work, we utilized electron beam melting to process Ni-based superalloy Haynes 282 and produce compact ...
melting, etc ; DNA; dynamic testing; exhibitions; measurement; mixing; polymers; rheology; viscosity; Show all 9 Subjects
Abstract:
... Bulk rheology measurements on concentrated monodisperse ring–linear DNA mixtures are reported for the first time. The entanglement behavior of the ring–linear DNA mixtures (with 15 and 50% linear chain fractions, ϕLᵢₙ) over a range of total DNA concentration, ϕTₒₜ, from ∼0.8 mg/mL (20C*) to 2 mg/mL (50C*) is reported. A discussion on the current problems in the reported ring dynamics/scaling is in ...
melting, etc ; concentrates; concentrating; exhibitions; gas hydrate; gases; journals; methane; surface area; wills; Show all 10 Subjects
Abstract:
... Gas hydrates usually contain a certain number of empty cages that will both affect the hydrate stability and reduce the gas storage capacity. In this work, by MD simulations, we found that the hydrate stability is related to the cage occupancy, the empty cage types, and especially the distribution of empty cages. With the decrease of overall occupancy, the stability of hydrate becomes worse. Under ...
melting point, etc ; algorithms; ceramics; energy; energy conservation; green chemistry; neural networks; prediction; temperature; Show all 9 Subjects
Abstract:
... The fabrication of low-temperature cofired ceramics (LTCCs) densified at a low sintering temperature (<900 °C) is energy-saving and environmentally friendly. However, finding novel LTCC materials by the trial-and-error method is time-consuming and costly. The LTCC materials often have low melting points, so it is feasible to discover high-performance LTCC materials out of the low-melting-point cer ...
melting point, etc ; anisotropy; models; molecular dynamics; neck; particle size; synergism; temperature; titanium dioxide; Show all 9 Subjects
Abstract:
... The surface activity and sintering process of rutile TiO₂ nanoparticles were investigated by molecular dynamics simulation. The anisotropic surface-activity was investigated for three low indexes of 〈111〉, 〈110〉 and 〈001〉 using a core-shell model for describing the sintering process. Moreover, the melting-point of TiO₂ nanoparticle increased with particle size. During the aggregation of two nanopa ...
melting, etc ; additives; blades; elastic deformation; exhibitions; forces; jams; manufacturing; methodology; models; particles; powders; solutions; Show all 13 Subjects
Abstract:
... Experiments and discrete element method simulation are combined to systematically reveal the particle-scale powder spreading dynamics based on the actual situation in additive manufacturing. To the best of our knowledge, this is the first report that introduces experimental calibration of powder layer height and line-contact triangular blade in the simulation. The results show that contributions o ...
melting, etc ; engineers; equations; evolution; fiber quality; models; process design; processing chemistry; processing technology; webs; Show all 10 Subjects
Abstract:
... Melt blowing (MB) is an industrial process used in producing microfibrous nonwoven materials. Over the past decades, a considerable amount of theoretical and experimental research has been conducted on the mechanisms of fiber dynamics during MB. Although some studies have been summarized by recently published review articles, the evolution of the theoretical equations and improvements in the exper ...
melting, etc ; X-ray scattering; crystallization; differential scanning calorimetry; exhibitions; history; length; sampling; solutions; temperature; Show all 10 Subjects
Abstract:
... A series of aliphatic polyethers with different chain lengths (nCH₂ = 6 to 12 and 16) is studied employing differential scanning calorimetry and X-rays scattering. The calorimetric and structural behavior of samples crystallized from the melt is divided into the odd–even and saturation regions. In the odd–even region (nCH₂ = 6 to 10), the odd samples (nCH₂ = 7 and 9) show enhanced calorimetric pro ...
Nils Maximilian Demski; Benjamin Lasson; Kyra Eowyn Reinert; Paul Hans Kamm; Tillmann Robert Neu; Francisco García-Moreno; Marco Jagodzinski; Daniel Alexandre Rolón; Markus Malcher; Dirk Oberschmidt
... In this study, novel micro particles in the shape of irregular tetrahedrons in a two to three-digit micrometer size range are presented. The particle manufacturing feasibility was investigated in three different ways: shaping, casting and rolling. Rolling showed the potential for mass production. The suitability of tetrahedral particles for the use as metal effect pigment was assessed by compariso ...
melting, etc ; Monte Carlo method; area; basins; colloids; journals; microparticles; mixtures; models; prisms; rotational molding; sampling; sandwiches; solids; translation (genetics); walls; Show all 16 Subjects
Abstract:
... The entropy-driven monolayer assembly of hexagonal prisms and cylinders was studied under hard slit confinement. At the conditions investigated, the particles have two distinct and dynamically disconnected rotational states: unflipped and flipped, depending on whether their circular/hexagonal face is parallel or perpendicular to the wall plane. Importantly, these two rotational states cast distinc ...
melting; melting point, etc ; carbon dioxide; electric furnaces; emissions; energy; energy conservation; laterites; nickel; olivine; slags; temperature; viscosity; Show all 13 Subjects
Abstract:
... Two-thirds of the global nickel output can be attributed to the rotary kiln-electric furnace process. Due to the high contents of MgO and SiO₂ in laterite, a high temperature (∼1600 °C) and corresponding energy (approximately 14 GJ/t-ferronickel) are required during the electric furnace smelting. This work verifies the feasibility of decreasing the smelting temperature by controlling the slag form ...
melting, etc ; additives; empirical models; exports; friction; gravity; Show all 6 Subjects
Abstract:
... Customary empirical gravity models are parametric and rely on the assumption that exports from country i to j depend on an additive index of three components: i-specific supply potential which is common across importers j; j-specific demand potential which is common across exporters i; and bilateral trade frictions which are indexed by ij and common within ij in a generic period. We demonstrate th ...
melting point, etc ; chemical communication; heat; nucleic acids; Show all 4 Subjects
Abstract:
... Since the photothermal heating of plasmonic spherical nucleic acids (pSNAs) depends on the self-assembly level and melting temperature (Tₘ), a temperature-self-controllable and biomarker-activatable photothermal effect in vivo was thus achieved using the Tₘ-dependent assembly–disassembly of pSNAs. ...
melting, etc ; glass; glass transition temperature; ice; particles; thermoplastics; Show all 6 Subjects
Abstract:
... This paper presents experimental values for the coefficient of restitution (eₙ) for millimeter-sized ice particles colliding with massive walls at different temperatures. Three different wall materials are tested: hardened glass, ice and Acrylonitrile butadiene styrene (ABS) polymer. The results show a high sensitivity to impact velocity Vᵢ, where eₙ decreases rapidly with increasing Vᵢ. The resul ...
melting, etc ; age; ambient temperature; heat; liquid crystals; powders; sampling; Show all 7 Subjects
Abstract:
... We report detailed experimental studies on the different crystal polymorphs of 8OCB (4′-octyloxy-4-cyanobiphenyl) obtained by cooling the sample from its melt. The 8OCB liquid crystal has a stable crystal phase which is known as commercial powder (CP) phase. In addition, it also exhibits various metastable crystal phases such as square-plate, needle phase and long parallelepiped (PP) phase. We ide ...
melting, etc ; ceramics; composite materials; freezing; journals; mechanical properties; porosity; solids; Show all 8 Subjects
Abstract:
... Freeze casting technique has become a promising way to assemble various components into multifunctional nacre-like materials. Surprisingly, although many ceramics materials have been processed by this approach, there are few studies reporting the structure–property-processing relationships of freeze-cast porous B₄C ceramics. Here we generate bimodally lamellar porous B₄C scaffolds by freeze castin ...
melting, etc ; buildings; diatomaceous earth; encapsulation; energy conservation; freezing; reliability; storage; temperature; Show all 9 Subjects
Abstract:
... The inherent leakage of molten paraffin during the solid-liquid transition and the immature state of industrial technology currently limit its practical applications for temperature regulation in smart energy-saving buildings. Here, a 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane modification of diatomite with an oleophobic surface was used as a supporting material of molten paraffin for enhancing ...
melting, etc ; couplings; design; differential equation; electric potential difference; guidelines; methodology; topology; Show all 8 Subjects
Abstract:
... The paper presents practical considerations and guidelines for designing an improved-efficiency contactless inductive power transfer link, delivering DC power in step-down mode to an electromagnetic levitation melting system residing in a sealed compartment. The proposed arrangement employs none-series compensated inductive power transfer link operating at the so-called “load-independent-voltage-o ...