Materials Literature
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Abstract Eleonorite, ideally Fe 6 3+ (PO 4 ) 4 O(OH) 4 ·6H 2 O, the analogue of beraunite Fe 2+ Fe 5 3+ (PO 4 ) 4 O(OH) 5 ·6H 2 O with Fe 2+ completely substituted by Fe 3+ , has been approved by the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification as a mineral specie…
The only known approach to fabricate large, uniform arrays of 4-Å single wall carbon nanotubes (SWNTs) is by using zeolite crystals as the template, in which the nanotubes are formed by chemical vapor deposition inside the linear channels of the AlPO4-5 (AFI for short) zeolite. However, up to now the pore filling fact…
Pozzolans have been discovered recently to be of various benefits to the construction industries and various researches are on the high gear to further discover, proof and established their suitability as substitute to cement. This research work has therefore work on the effectiveness of bamboo leaf ash (BLA) and locu…
Abstract The present paper compares and discusses two selected misfit (layer) compounds exemplarily, namely SnS‐SnS 2 and LaS‐TaS 2 . We have employed a density‐functional theory‐based approach to calculate structural, energetic, and electronic properties of these structures. We have put emphasis on the difference bet…
A novel quad-band terahertz metamaterial absorber using four different modes of single pattern resonator is demonstrated. Four obvious frequencies with near-perfect absorption are realized. Near-field distributions of the four modes are provided to reveal the physical picture of the multiple-band absorption. Unlike mo…
A new alkali thorium phosphate family, A 2 Th(PO 4 ) 2 (A = Li, Na, K, Rb, Cs), has been synthesized and systematically investigated. The structural evolution of this new family was compared with that of the previously reported arsenic-based family A 2 Th(AsO 4 ) 2 (A = Li, Na, K, Rb, Cs). Similar compositions of the…
Abstract An orientation memory effect in high density polyethylene (HDPE) filled with vapor grown carbon nanofibers (VGCNF) is reported. Two-dimensional X-ray (2DXR) confirmed the reorientation of HDPE crystallites upon the uniaxial stretching of HDPE and HDPE filled by VGCNFs. This anisotropy of 2DXR spectra was decr…
In order to understand the long-standing problem of the nature of glass states, we perform intensive simulations on the thermodynamic properties and potential energy surface of an ideal glass. It is found that the atoms of an ideal glass manifest cooperative diffusion, and show clearly different behavior from the liqu…
The corrosion of chromium-nickel steel 08Kh18N10T in 2 M H 2 SO 4 has been studied in a broad temperature range, t = 0-200°C.Under these conditions, the metal corrosion is enhanced with an increase in t to reach 9.7 kg/(m 2 •h) at 200°C.It has been shown that a formulation of IFKhAN-92 inhibitor (a substituted triazol…
The effect of hollow aluminosilicate microspheres on the Payne effect and on physicomechanical, thermal, fire-retardant, and heat-protecting properties of elastomer compounds based on ethylene–propylene–diene rubber was studied. Based on the results obtained, the mechanism of the interaction of the elastomer matrix wi…
In the article on the example of the straightener blade made of polymer composite materials, discusses the advantages of using the method of microfocus X-ray for nondestructive testing of aviation products. Described basic types of defects characteristics occurring in a similar type parts both during their manufacture…
Phthalocyanines, porphyrins, and chlorins have been widely studied as photosensitizers. Both experimental and computational strategies are employed in order to propose new and more active molecules derived from those macrocycles. In this context, there are two main strategies used: (i) the addition of different substi…
With the tunable and flexible physicochemical properties, tantalate photocatalysts with tungsten bronze structure are worth being studied. In this work, we successfully synthesized a novel potassium tantalate K 6 Ta 10.8 O 30 with tungsten bronze structure using a facile solid‐state reaction route. The effects of calc…
The synthesis of hemicelluloses-g-polyacrylamide (PAM) was carried out in diluted alkaline aqueous solution via free radical copolymerization initiated by redox initiator composed of potassium persulfate (KPS)/sodium thiosulfate (Na2S2O3). The less substituted hemicelluloses, l-arabino-4-O-methyl-d-glucurono-d-Xylan (…
Abstract Boscardinite, ideally TlPb 4 (Sb 7 As 2 ) ∑9 S 18 , has been described recently as a new homeotypic derivative of baumhauerite, found at Monte Arsiccio mine, Apuan Alps, Tuscany, Italy. New findings of boscardinite in different mineral associations of this deposit have allowed the collection of new crystal-ch…
Currently, hybrid glass fiber-reinforced plastics (GFRPs) have attracted increasing attention as gradually common used materials. Glass/silk fiber hybrid reinforced plastic (GSFRP), a new kind of material, is designed aiming to create a kind of opaque effect of specific use. Three types of silk/glass composites with f…
Attempts have been made to simulate numerically the conductivity degradation of solid oxide fuel cell (SOFC) YSZ electrolyte; physicochemical model has been constructed on the basis of experimental conductivities of Pt/1%NiO-doped YSZ/Pt cells under OCV condition. The temperature effect was extracted from the time con…
It is generally accepted that formation and accumulation of space charge in polymeric insulation is a critical issue in the design of high voltage electric systems, as it leads to insulation degradation and premature failure under high voltage surges and polarity reversals. Even at service stress level, accumulation o…
High-speed steels made by powder and traditional metallurgical technology have been investigated.These steels are used for manufacturing of metalworking tools.Powder high-speed steels have a large safety margin and a high level of mechanical properties.Mechanical properties and the structure of steels S390 MICROCLEAN®…
A constitutive modelling of ferromagnetic materials under combined magnetomechanical multiaxial loading with different boundary conditions and a finite element implementation are presented. The phenomenologically motivated model is capable of predicting magnetisation, strain, and stress and is thus suitable, e.g., for…