Materials Literature
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Abstract 63Ni grain boundary (GB) diffusion in polycrystalline γ-Fe–Ni alloy was measured by the conventional radiotracer method. The double product P = δ × Dgb (δ is the GB width and Dgb is the GB diffusivity) was found to follow the Arrhenius relationship P = 1.31 × 10–13 × exp(–157 kJ mol–1/RT) m3/s, where R is the…
Polymerizable hexacatenar mesogens containing a photo-active oligo(p-phenylenevinylene) core were successfully synthesized by replacing the traditional n-alkoxy tails on the molecules with polymerizable hydrocarbon tails containing terminal isoprenyl or 1,3-dienyl units. It was found that for this particular liquid cr…
Molar heat capacities were measured for U1-yGdyO2 (y=0–0.27) by differential scanning calorimetry (DSC) in the temperature region from 325 to 1,673 K. The molar heat capacities of U1-yGdyO2 (0<y&;lt;0.27) were close to, or slightly lower than, the values calculated by using the summation rule, and anomalous increases…
Abstract A systematic investigation on the effect of substrate temperature on the structure, optical absorption and density of states of vacuum evaporated gallium monoselenide (GaSe) thin films is reported. The X‐ray diffraction analysis shows an occurrence of amorphous to polycrystalline transformation in the films d…
A procedure for estimating the low‐strain mechanical properties of plain woven fabrics is presented. A quantity prominent in the equations is the contact length at the yarn cross‐over, which has not been estimated till the moment. A consideration of Peirce's rigid thread model leads to a method of estimating the conta…
The ability of a mesoporous molecular sieve to adsorb chlorinated phenols was studied experimentally. Thus, the adsorption isotherms of pentachlorophenol (PCP) from aqueous solutions were measured on (M)Al-MCM-41 (M = Na + , K + , Cu 2+ , Cr 3+ ) at intervals of 10 K between 303 K and 323 K. The experimental isotherms…
Currently, textile industrialists have to consider the sensory aspect in their design and manufacturing specifications. To describe the sensory quality of products, sensory evaluation does exist and is widely used in the food and cosmetics areas. These methodologies have been successfully transposed to tactile evaluat…
The contribution of individual core and sheath components to the tensile properties of DREF-III yarn is reported here. Three different yarn types are made by the DREF-III system: staple viscose fibers in both core and sheath, staple viscose fibers in the core and staple PVA fibers in the sheath, and staple PVA fibers…
This paper presents a summary of a series of our macroscopic and microscopic constitutive models for pseudoelasticity and shape memory effect of a shape memory alloy wire or strip based on a general function of the dissipation potential, called phase interaction energy function. Our model may well predict in a unified…
Abstract Pb[(Zn 1/3 Nb 2/3 ) 0.91 Ti 0.09 ]O 3 (PZNT91/9) single crystals were grown by two methods: from solution using PbO as a self‐fluxing agent (SC method) and directly from the melt without fluxing (MC method). In both growth methods, an allomeric Pb[(Mg 1/3 ‐Nb 2/3 ) 0.69 Ti 0.31 ]O 3 (PMNT69/31) single crystal…
Abstract Interstratified serpentine-smectite was found in the fine-grained fraction of altered metasomatic contact biotite-schists developed between serpentinite and granite-type rocks (Lower Silesia ophiolite sequence, Poland). Ni-rich serpentine-smectite is R0-interstratified lizardite (0.80)-stevensite (0.15)-vermi…
This paper focuses on effects of roughness on wettability. According to Wenzel's equation, the transition of theoretical wetting contact angles is 90°, whereas many experimental results have indicated that such a transition takes place at contact angles smaller than 90°. A new model of wetting on roughness surface is…
Abstract L-aspartic acid was intercalated into layered double hydroxides by coprecipitation. Two types of well crystallized material were obtained and were characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetry, differential thermal analysis and polarimetry. Schematic mode…
Mullite–boron nitride (BN) composite with high strength, low Young's modulus, and highly improved strain tolerance was prepared by reactive hot pressing (RHP) using aluminum borates (9Al 2 O 3 ·2B 2 O 3 and 2Al 2 O 3 ·B 2 O 3 ) and silicon nitride as starting materials. Compared with the monolithic mullite, the compos…
In the standard specification of ac dielectric-characteristic measurements of insulating materials, test voltage is prescribed as "approximately sinusoidal" when the highest acceptable deviation of the HV waveform, from the correct sinusoidal shape, is limited to a /spl plusmn/5% tolerance range of the crest factor va…
Abstract The corrosion failure behavior of marine steel is affected by stress, which exists in offshore structures at sea‐mud region. The sulfate reducing bacteria (SRB) in the sea‐mud made the steel more sensitive to stress corrosion cracking (SCC) and weaken the corrosion fatigue endurance. In this paper, a kind of…
Dielectric and DSC methods were used to study a new fluorinated liquid crystalline compound exhibiting ferroelectric and paraelectric phases as well as an intermediate alpha sub-phase. Two dielectric relaxation processes were revealed in the SmC* phase: a typical Goldstone mode over the whole temperature range and a s…
A fabric is a flexible material that it is highly affected by its own weight, which causes large deflections. The relationship between the bending moment and the curvature is nonlinear. This study presents a model for fabric buckling by considering the flexibility of the fabric as well as its nonlinearity in bending.…
Dynamic vulcanization of a soft grade of thermoplastic natural rubber (TPNR) was carried out using several concentrations of Hexamethylene N, N′ bis (tert-butyl peroxy carbamate) (HBTP). The blends were melt mixed in a Brabender plasticorder. The effectiveness of dynamic vulcanization was investigated using the Braben…
Abstract Preparation and optical characterization of dysprosium gadolinium oxalate (DGO) single crystal is reported. The crystals were grown using silica gel technique, by the controlled reaction of rare earth nitrates with oxalic acid. Crystals were characterized using X‐ray powder diffraction, optical absorption and…