Materials Literature
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Abstract For improving the performance of ceramic thermoelectric materials an increase in the effective mass is required because it is the main factor determining the Seebeck coefficient, in the case of a semiconductor with sufficiently high carrier concentration. The Ruddlesden–Popper phase Sr 3 Ti 2 O 7 , with its c…
A multi-scale analysis is presented to parametrically describe the Mode I delamination of a carbon fiber/epoxy laminate. In the midplane of the laminate, carbon nanotubes are included for the purposes of selectively enhancing the fracture toughness of the laminate. To analyze carbon fiber epoxy carbon nanotube laminat…
The crystal structure of the [Tb(BTFA) 2 (NO 3 )(TPPO) 2 ] complex (TPPO is triphenylphosphine oxide, BTFA is benzoyltrifluoracetone), which exhibits strong triboluminescence, has been established by X-ray crystallography. The crystals are triclinic: a = 11.668(3) Å, b = 11.700(3) Å, c = 12.512(3) Å, α = 65.161(4°), β…
Studies into the properties of polymer-wood composites (PWC) are mostly focused on thermoplastics as the matrix phase and wood flour as a reinforcing phase. This article aims to identify the optimum contents of wood sawdust fibre and silane coupling agent to be introduced into natural rubber (NR) compounded with carbo…
Purpose The paper aims to present several methods that were developed, evaluated and finally used as part of a 3D electronic tailor especially adapted to the clothing industry. Design/methodology/approach An experimental top down approach taking care of building a system adapted to the constraints of the textile indus…
The transverse crack, a type of cold crack, occurs perpendicular to the welding direction. From experience, preheating and interpass temperature are important factors in cold crack occurrence. Transverse cracks were detected in the specimen welded with 70°C preheat and an interpass temperature below 30°C; cracks were…
Abstract The present study gives an overview on the potential, possibilities and perspectives that the synthesis of functional materials, such as BaTiO 3 , with microemulsions as the reaction medium offers. Well defined nanocrystalline particles in the form of powders for further ceramic processing, as well as stable…
Soda lime glass was thermally poled at 280°C with dc voltages up to 2kV. Second-order nonlinearity was found in a layer ∼1.7μm beneath the anode surface with second-harmonic microscopy. Scanning electron microscopy was employed to examine the microstructure of the poled glass under the anode. In the depletion region,…
Systematic investigation on the deposition of thin silicon-carbon-nitride films by reactive rf magnetron sputtering from SiC–C composite target in nitrogen-argon atmosphere was studied. The significant effect of deposition pressures on the hardness of the deposited SiCN films was found, which varied between 4.7 and 44…
A multiscale modeling strategy is developed to study grain boundary fracture in polycrystalline aluminum. Atomistic simulation is used to model fundamental nanoscale deformation and fracture mechanisms and to develop a constitutive relationship for separation along a grain boundary interface. The nanoscale constitutiv…
Les sols céréaliers du Nord-Ouest de la Tunisie dérivent la plupart du temps d'apports alluviaux ou des débris d'altération des roches carbonatées argileuses. L'extraction de la fraction argileuse de quatre types représentatifs de ces sols a permis de mettre en évidence les minéraux argileux suivants : kaolinite, illi…
Collision‐induced breakup resulting from binary collisions of large drops has been investigated in the past by very few laboratory experiments. This process is here investigated using a 3D‐CFD program based on direct numerical simulation. Besides same drop pairs as considered in the measurements also a number of addit…
The diatom flora of Lake Abant was studied monthly for 2 years (June 2003-June 2005) from 3 littoral and 2 vertical stations. A total of 123 diatom taxa were identified. Some species (Asterionella formosa Hassall, Cymbella silesiaca Bleisch, C. cistula Kirchner, Fragilaria biceps (Kutzing) Lange-Bertalot, F. dilata (B…
Assessment and comparison of CO2 corrosion predicition models Richard Charles Woollam; Richard Charles Woollam BP Exploration Search for other works by this author on: This Site Google Scholar Sandra Hernandez Sandra Hernandez BP Search for other works by this author on: This Site Google Scholar Paper presented at the…
Purpose To give an overview about market trends and driving forces of halogen-free materials for PCB applications. The paper also includes an overview about new halogen-free raw materials developed to meet the market demand. Design/methodology/approach The paper does not intend to deal with scientific aspects, i.e. wh…
All work published so far on C-SiTF on ceramics was based on either non-conductive ceramics, or on "model" ceramics never able to cope with the cost requirements. For a wafer equivalent approach, where c-Si films on substrate can be directly processed to solar cells with nowadays technology, the respective substrates…
Textile industrial scouring processes are currently based on the use of chemical reagents that cause an important environmental impact. For some years, several research groups have focused on obtaining enzymes that can carry out the scouring task in an effective way, allowing at the same time a decrease of the industr…
Six samples of Fe100−xGax (15⩽x⩽30) were prepared by melt spinning for a systemic investigation of the structure, magnetostriction, and magnetic properties of Fe–Ga alloys. A large magnetostriction (>750ppm) that increases with increasing Ga concentration has been observed in Fe100−xGax (15⩽x<25) ribbons…
Clay subfractions (SFs) of <0.1, 0.1–0.2, 0.2–0.3, 0.3–0.6, 0.6–2 and 2–5 μm separated from Middle Riphean shales of the Debengda Formation are studied using the TEM, XRD, K-Ar and Rb-Sr isotopic methods. The oxygen and hydrogen isotope compositions in the SFs are studied as well. The low-temperature illite-smectite i…
We report the synthesis and characterization of hitherto unreported bent‐shaped dimeric liquid crystals based on a furan bridge in the mesogenic core. The compound 18‐Fu2 exhibits liquid crystalline behaviour.