Materials Literature
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The shock response of the aluminum alloy 6061, and its variation according to heat treatment have been monitored via the placement of stress gauges in such orientations so as to be sensitive to the lateral component of stress, and hence the shear strength. To complement these measurements, the postshock microstructure…
The effect of doping by boron on optical properties of multilayers containing Si-NCs were studied by means of photoluminescence (PL), time-resolved PL, photoluminescence excitation (PLE), transmission and reflection measurements. It was found that PL decay is strongly non-single exponential and can be described by mea…
Three wrought iron ingots immersed during 2000 years at 12 m deep in Mediterranean Sea were stored after excavation for 2 years without specific protection in air. After that period, two of them were treated by immersion in a NaOH solution, while the third was used to describe the corrosion system resulting from the s…
Bacterial cellulose (BC) material was obtained through fermentation by Acetobacter xylinumis with superior functional properties. BC is an interesting material for using as a wound dressing since it provides moist environment to a wound and results in a better wound healing. With the aim of using BC as a wound dressin…
Thermal expansion data for more than 5500 compositions of silicate glasses were analyzed statistically. These data were gathered from the scientific literature, summarized in SciGlass© 6.5, a new version of the well known glass property database and information system. The analysis resulted in a data reduction from 55…
Epitaxial single crystal and boron-doped diamond layers were exposed to reactive ion etching in Ar/O2 plasma (rf power of 25 W and self-bias of 100 V); and the electrical, structural, and electrochemical characteristics of the exposed surface were investigated. Angle-resolved x-ray photoemission spectroscopy (XPS) mea…
In the present work, the authors tried to establish degradation indices for heritage ferrous artefacts, especially those used in ancient buildings and submitted to indoor atmospheric corrosion. The authors focused on the site of the Amiens Cathedral in the north of France. Samples coming from this reference site were…
The surface and gas-phase thermal chemistry of tetrakis(ethylmethylamido)titanium (TEMAT), by itself and in the presence of water, was investigated by using transmission infrared (IR) absorption spectroscopy and tandem gas chromatography-mass spectrometry (GC-MS). It was found that the uptake of TEMAT is partially sel…
Nanocrystalline VO 2 thin films were deposited onto glass slides by direct current magnetron sputtering and post-oxidation. These films undergo semiconductor-metal transition at 70 °C, accompanied by a resistance drop of two magnitude orders. The crystal structures and surface morphologies of the VO 2 films were chara…
Abstract Layered double hydroxides (LDHs) are layered ion exchangers, with a large surface-charge density, which react easily with organic anions. Various types of organics are rapidly substituted in the interlayer space of inorganic precursor LDHs. ZnAl-LDHs were intercalated with 1- to 19-carbon monocarboxylic acid…
Glycerol is one of the best studied and most widely used glass-forming liquids; however, its dynamic properties are still under discussion. The dielectric spectra of glycerol are studied in detail over wide ranges of temperatures and pressures up to 4.5 GPa. Starting from the pressures of 2–3 GPa, qualitative change i…
Metal-oxide-metal capacitors based on CaCu3Ti4O12 (CCTO) thin films, grown by metal-organic chemical vapor deposition and presenting a “brick wall” morphology, have been fabricated and characterized. In these capacitors, the coexistence of two Maxwell–Wagner related phenomena, i.e., the internal barrier layer capacito…
A special group of exploitation stresses of electrical insulation systems occurs at PWM (Pulse Width Modulated) inverter supply. The fast switching in PWM drive applications, which has fundamental components 50/60 Hz, produces complex transients that stresses the cable and motors insulation. Such conditions have essen…
The electro-optical properties of the PMN- x PT single-crystal relaxor solid solutions with different PT contents ( x = 6, 10, 13%) and the PLMN-25PT transparent ceramic with a La content of 3%, which has been synthesized for the first time, have been studied at room temperature. It has been shown that the dependence…
A series of 3,3 ’ ,4,4 ’ -diphenylthioethertetracarboxylic dianhydride (s-TDPA), 2,3,3 ’ ,4 ’ -diphenylthioethertetracarboxylic dianhydride (a-TDPA), and 2,2 ’ ,3,3 ’ -diphenylthioethertetracarboxylic dianhydride (i-TDPA) isomer mixtures were synthesized from 3- and 4-chlorophthalic anhydrides. Copolythioetherimides d…
Ga 2 O 3 /ITO films were prepared by magnetron sputtering on quartz glass substrates. The transmittance and sheet resistance of ITO films and Ga 2 O 3 /ITO films were measured by using a double beam spectrophotometer and four point probes. The effect of the ITO layer and Ga 2 O 3 layer thickness on the electrical and…
BiFeO₃ (BFO) single crystals were grown and the effects of Zn and Mn co-doping on the polarization and leakage current properties were investigated at 25 °C for establishing materials design based on defect chemistry. Although Zn doping or Mn doping led to a deterioration in the properties, Zn-Mn co-doping led to a la…
The dependence of partial discharge inception voltage (PDIV) and repetitive partial discharge inception voltage (RPDIV) on some voltage impulse parameters (impulse width, rise time and repetition frequency) is investigated in this paper focusing on crossed pair specimens made of polyimide-amide enameled wires. The res…
The optical conductivity of LaFeAsO, ${\text{BaFe}}_{2}{\text{As}}_{2}$, ${\text{SrFe}}_{2}{\text{As}}_{2}$, and ${\text{EuFe}}_{2}{\text{As}}_{2}$ in the spin-density wave (SDW) state is investigated within density functional theory (DFT) in the framework of spin-polarized generalized gradient approximation (GGA) and…
Corrosion behavior in Zn and Zn-55Al baths were investigated on a Fe-based alloy, which was design to apply to hot-dip production lines as the anti-corrosion alloy. The results reveal that the Fe-based alloy shows excellent corrosion resistance both in pure zinc bath and Zn-55Al bath. And the reaction rate and interme…