Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
This paper illustrates a new model that enables the estimation of life of polymeric insulation subjected to DC stress, both in the presence and in the absence of voltage polarity inversions. The derivation of the model parameters is based on the results of space charge measurements and accelerated life tests realized…
Article Strain Gradient Crystal Plasticity: Thermomechanical Formulations and Applications was published on August 1, 2002 in the journal Journal of the Mechanical Behavior of Materials (volume 13, issue 3-4).
Abstract This study deals with the surface and electrochemical characterization of mild steel surfaces after plasma‐enhanced chemical vapour deposition of organosilicon films, performed in order to increase corrosion resistance. Coating deposition was performed in a home‐made reactor with hexamethyldisiloxane–oxygen–a…
In Sweden, high-level radioactive waste will be disposed of in a canister with a copper outer container and a cast iron or carbon steel insert. If the iron insert comes into contact with anoxic geological water, anaerobic corrosion leading to the generation of hydrogen will occur. This paper presents a study of the an…
Uncharged water-soluble porphyrins were prepared by reaction between tetrakis(p-hydroxyphenyl)porphyrin and chlorinated poly(ethylene glycol) methyl ethers of different molecular weights. Water-solubility was achieved by binding four poly(ethylene glycol) branches to a porphyrin core to give star polymers with molecul…
A model of the geometry of flat braids is proposed, based on coding of the braid topology and on the minimum energy principle for the yams. The description of the geometry also takes into account minor effects, such as side crimp and yam twisting induced by skewness of the structure. The model is compared with results…
Currently, there is a major upsurge in research on the use of recyclable and biodegrad able materials in manufactured products. This has triggered a need for biodegradable nonwovens for nearly forty automotive interior components, which currently contain traditional materials such as glass and other manufactured fiber…
Incipient micellization in a model self-associating telechelic polymer solution results in a network with a transient elastic response that decays by a two-step relaxation: the first is due to a heterogeneous jump-diffusion process involving entrapment of end-groups within well-defined clusters and this is followed by…
Abstract Effect of cerium pretreatment on the corrosion inhibition characteristics of AA6061 T6 alloy–10% Al 2 O 3 metal–matrix composite was investigated in aerated 3.5% NaCl solution after different immersion times ranging between 1 and 60 days at room temperature. Series of specimens were prepared under the followi…
Recent spectroscopic studies have demonstrated the formation of layered double hydroxides (LDH) and phyllosilicates upon sorption of Zn2+, Ni2+, and Co2+ to clay minerals and aluminum oxides at neutral to alkaline pH and at relatively high initial metal concentrations (>1 mM). The intention of the present study was to…
Bombyx mori silk fibroin is a fibrous protein whose fiber is extremely strong and tough, although it is produced by the silkworm at room temperature and from an aqueous solution. The primary structure is mainly Ala-Gly alternative copolypeptide, but Gly-Ala-Ala-Ser units appear frequently and periodically. Thus, this…
In this work, we present the fabrication of bulk micromachined microbolometers made of amorphous germanium-silicon-oxygen compounds (Ge/sub x/Si/sub 1-x/O/sub y/) grown by reactive sputtering of a Ge/sub 0.85/Si/sub 0.15/ target. We describe the complete procedure for fabricating thermally isolated microbolometers con…
The idea of implementing optical filters by coupling evanescent waves from several diffracted orders into multiple leaky waveguide modes is studied theoretically. Using a dielectric thin-film structure consisting of a coupling grating placed between adjacent waveguides, guided-mode resonance filters exhibiting multipl…
The acrylamide gelification process is a fast, inexpensive, reproducible, and easily scaled up chemical method for obtaining nanopowders of BaZrO 3 that can be used for sintering crucibles and many electronic applications. This method enables the production of 100 g of high‐purity powders in one run, using simple labo…
Epitaxial films of ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Cr}}_{x}\mathrm{Te}$ were grown on a GaAs substrate. The lattice constant of ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Cr}}_{x}\mathrm{Te}$ follows Vegard's law, meaning that Cr ions replace Zn sites in the host lattice. A strong enhancement of the magnetic…
Abstract Surfaces of two widely used biomaterials—poly(tetrafluoroethylene) (PTFE) and poly(ethylene terephthalate) (PET)—have been modified using gas plasmas. The concentrations of hydroxyl, carboxyl, carbonyl and amine groups were analysed with chemical derivatization (CD), using different aldehyde, acetic anhydride…
Al 2 O 3 ‐ZrO 2 eutectics containing 0 to 12.2 mol% Y 2 O 3 (with respect to zirconia) were produced by directional solidification using the laser floating zone (LFZ) method. Processing variables were chosen to obtain homogeneous, colony‐free, interpenetrating microstructure for all of the compositional range, optimum…
We have previously determined the crystal structure of a novel pentagonal ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco) from the hyperthermophilic archaeon, Thermococcus kodakaraensis KOD1. Here we have carried out biochemical studies to identify the necessities and/or advantages of this intriguing pentago…
The improvement of charge transport in conjugated polymers is a focal point of current research. It is shown here that the carrier mobility can be substantially increased through the introduction of conjugated cross-links between the conjugated chains. Novel organometallic polymer networks based on a poly(p-phenylene…
The crystallization behavior and crystal structure of polyamide 6/montmorillonite (PA6/MMT) nanocomposites were investigated by differential scanning calorimetry and X-ray diffraction, and an interesting behavior was observed. The material was prepared via melt compounding using an organophilic clay obtained by co-int…