Materials Literature
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Four kinds of Pb-Mg-Al alloys with Al contents of 0, 5, 10, and 15% (mass fraction) were prepared by induction melting. The corrosion behaviors of these four alloys were investigated by electrochemical measurements and immersion tests. The results indicate that Mg, Mg17Al12, and Mg2Pb phases in Pb-Mg-Al alloys form a…
We demonstrate that increasing the hydrophobic environment around the charge center of a polyelectrolyte (PE) not only decreases the water content of an adsorbed PE layer but can even dewater up to ~50% of an initially hydrated substrate. The results of this work are expected to yield new stratagies to dewater PE syst…
The corrosion resistance of Type 304LN (UNS S30453) stainless steel containing nitrogen compositions of 0.132 wt%, 0.193 wt%, and 0.406 wt% in nitric acid (HNO3) and chloride medium is investigated in the paper. Increasing the nitrogen content in the steel showed no deleterious effect on corrosion resistance in HNO3.…
The phase equilibria of the glycine–KCl–NaCl–H 2 O system were determined in the concentrations up to 3.33 mol·kg –1 over the temperature range from 283.2 to 363.2 K using a dynamic method. A rigorous chemical model for the glycine–KCl–NaCl–H 2 O system was established by the Pitzer model with the help of an OLI platf…
Six new ion-pair metal-bis(dithiolene) complexes with the formulas [C 9 H 14 N 4 ][Cu(mnt) 2 ] (1a ), [C 10 H 16 N 4 ][Cu(mnt) 2 ] ( 1b ), [C 11 H 18 N 4 ][Cu(mnt) 2 ] ( 1c ), [C 12 H 20 N 4 ][Cu(mnt) 2 ] ( 1d ), [C 13 H 22 N 4 ][Cu(mnt) 2 ] ( 1e ), and [C 14 H 24 N 4 ][Cu(mnt) 2 ] ( 1f ) have been synthesized startin…
The electron-hole asymmetry has been measured in highly oriented pyrolitic graphite using magneto-optical absorption measurements. A splitting is observed for transitions at both the $K$ point and the $H$ point of the Brillouin zone of graphite where the effect of trigonal warping vanishes. This result is fully consis…
We propose an electrically tunable liquid crystal (LC) grating unit consisting of a conventional homogeneous LC cell and an LC grating with spatially varied twisted-nematic (TN) orientation domains (-π to π). The former cell controls the Stokes parameter S 3 and the latter functions as a TN-LC grating that is highly s…
Electronic factors essential for NO activation by Cu(I) sites in zeolites are investigated within spin-resolved analysis of electron transfer channels (natural orbitals for chemical valence). NOCV analysis is performed for three DFT-optimized models of Cu(I)–NO site in ZSM-5: [CuNO]+, (T1)CuNO, and (M7)CuNO. NO as a n…
Abstract Thin films of GeTe, Ge 2 Sb 2 Te 5 and Sb 2 Te 3 have been synthesized from their respective polycrystalline bulk by thermal evaporation. X‐ray diffraction study of the films confirms the amorphous nature of GeTe and Ge 2 Sb 2 Te 5 films, but as‐deposited Sb 2 Te 3 film was in the crystalline form. Structural…
Abstract The present work is devoted to the study of the Zr 4+ /Ti 4 substitution in the K 1/2 Bi 1/2 Ti (1– x ) Zr x O 3 solid solution ( x = 0.0 to x = 1.0), based upon the K 1/2 Bi 1/2 TiO 3 (KBT) ferroelectric compound. The tetragonal distortion of KBT is suppressed by this substitution and leads to the cubic comp…
The electrochemical characteristics of magnesium alloy AZ31 in simulated body fluid were investigated. The emphasis of the present study was to explore the impact of two alloy processing/production techniques, namely, die casting and extrusion. Electrochemical impedance spectroscopy in combination with immersion tests…
E Dalgaard*ab, P Wanjarab, J Gholipourb & J J Jonasaa McGill University, 3610 University St., Montreal, PQ, Canadab National Research Council Canada, Institute for Aerospace Research–Aerospace Manufacturing Technology Centre, 5145 Decelles Ave., Montreal, PQ, Canada*Corresponding author, email Elvi.Dalgaard@pwc.caAbst…
The structure, electronic and elastic properties of CrO 2 in the high pressure orthorhombic CaCl 2 (Pnnm) phase are investigated by first-principles calculations based on density functional theory (DFT). Our calculated crystal parameters are in good agreement with the available experimental data. The electronic band s…
To enable testing of candidate inhibitors for chloride-induced pitting of austenitic stainless steel in a radiation field, an artificial pit cell was required that was capable of sustaining corrosion at rates in the range revealed by plant inspections. Two designs of artificial pit cells are described. These allowed m…
For the first time, we report experimentally and theoretically that nitroaromatic compounds, 2,4‐dinitrobenzenethiol and 4‐chloro‐2‐nitrobenzenethiol, on silver sols can be selectively reduced to 2‐amino‐4‐nitrobenzenethiol and 2‐amino‐4‐chlorobenzenethiol simply by irradiating with a visible light in ambient conditio…
Abstract In this article, the dynamic viscoelasticity characteristics of the natural rubber (NR)/magnesium dimethacrylate (MDMA) composites with different cure extent are investigated using a Rubber Process Analyzer 2000 (RPA2000). A weak filler–filler network of MDMA is formed in the uncured compounds. MDMA polymeriz…
Organic nanoparticles consisting of 3,3'-diethylthiacyanine (TC) and ethidium (ETD) dyes are synthesized by ion-association between the cationic dye mixture (10 % ETD doping) and the tetrakis(4-fluorophenyl)borate (TFPB) anion, in the presence of a neutral stabilizing polymer, in aqueous solution. Doping with ETD make…
peer reviewed
The phenomenon of fluxionality in the reactions of transition metal oxide clusters provides many opportunities in various catalytic and industrial processes. To gain a better understanding into the various factors influencing this phenomenon, we have carried out an electronic structure investigation of the fluxionalit…
Members of the (1 – x)Ta2O5·xAl2O3 series were synthesized, and the structures investigated using synchrotron X-ray powder diffraction and neutron powder diffraction data for the first time. Structural models were developed and refined using the Rietveld method and a [3 + 1] dimensional incommensurately modulated comp…