Materials Literature
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In this study, processing–structure–mechanical properties relationships in expanded wood fiber polystyrene composites (EPSC) made with a physical blowing agent were investigated. A systematic investigation was performed based on a statistical experimental design. The samples were saturated with carbon dioxide at high…
High temperature strength and room temperature fracture toughness of Nb-based alloy system were investigated to explore a candidate material for gas turbine use at 1773 K as a function of chemical compositions. 0.2% proof stress at 1773 K and the fracture toughness were studied for the solid-solution hardening Nb-Mo-W…
Testing equipment for materials under high-pressure hydrogen of 70 MPa at the temperature range of room temperature up to 373 K has been developed. The pressure vessel was designed to enable the measurement of actual tensile load on a specimen by an external load cell without the influence of axial load due to high pr…
The donor-functionalised alkoxides [Et(2)Ga(OR)](2)(R = CH(2)CH(2)NMe(2)(1), CH(CH(2)NMe(2))(2)(2), CH(2)CH(2)OMe (3), CH(CH(3))CH(2)NMe(2)(4), C(CH(3))(2)CH(2)OMe (5)) were synthesised by the 1:1 reaction of Et(3)Ga with ROH in hexane or dichloromethane at room temperature. Reaction of Et(3)Ga with excess ROH in refl…
Triphenyl phosphite (TPP) is now well known to exhibit an intriguing transformation of the supercooled liquid. The transformation was firstly interpreted as a first-order polyamorphic transition between the supercooled liquid and an apparently amorphous state different from the glass and the ordinary liquid, the so-ca…
L-Lysine based dendrimers containing a disulfide moiety at the core were synthesized. These novel ligands were used to stabilize Au nanoparticles via a one-phase chemical reduction method. The size of the resultant nanoparticles was found to decrease with increasing dendritic generation. Furthermore, the thermal stabi…
The objective of this study was to evaluate the effect of agricultural pollution on periphyton in streams and rivers of southern Québec. We sampled benthic algae incubated from mid-July to mid-August on artificial substrates at 29 sites and analysed the variations in community structure and total community biomass. Di…
An experimental program was conducted in order to determine the effects of microstructure on the high temperature constitutive behavior or powder-processed IN100. The relevant application is the high pressure turbine disk in a gas turbine engine. Eight different microstructures were prepared, with 260 o C yield streng…
High quality ZnO single-crystal films were doped with copper by thermal diffusion, and their luminescent properties were studied by cathodoluminescence spectroscopy. Doping with copper increases the intensity of the green-emission band of the cathodoluminescence spectrum, whose peak, width, and shape at 78 and 300 K r…
The oxide-ion conductivity of two solid-solution systems of a pyrochlore-type composition, (Y1-xLax)2(Ce1-xZrx)2O7 (YLa) and (Nd1-xYbx)2(Ce1-xZrx)2O7 (NdYb), was investigated. The crystal phase of the YLa system with a variable cation radius ratio, r(A3+)/r(B4+), but a constant lattice parameter, changed from the rare…
A comparative study of anodic film growth on niobium, zirconium, and tungsten in 0.4 M Na 2 SO 4 + 0.1 M H 2 SO 4 was performed using the rotating electrochemical quartz crystal microbalance (EQCM). Potential sweep as well as potential step and hold experiments were performed in the range between open circuit and 8 V…
This first report on applications of discharges (or discharge plasma) in a supercritical carbon dioxide environment describes simple generation of nanostructured materials such as carbon nanotubes, nanopolyhedra, and copper nanostructured materials. Carbon nanostructured materials are synthesized by supercritical carb…
Detailed analyses of the solution structure and exchange dynamics of two sets of homologous mono-amide triacetate lanthanide complexes (Ln = Eu, Gd) of cyclen have been undertaken. The complex [LnL1], bearing an N-linked CH2CH2NHCO-pyridyl moiety, forms mono-aqua (q = 1) species in solution and the Gd complex undergoe…
Micro-cellular foaming technology draws attention due to the enhancement of mechanical strength, which has been considered as a weak point of current plastic foaming technology. Foam materials produced by this technology offer improved consistency and homogeneity of cell structure, which can result in products with su…
The adhesion of fine particles plays a significant role in the performance of particulate processes and in the quality of particulate products. The extent of adsorption of water on the particles from the surrounding atmosphere is governed directly by the relative humidity of the air. Published evidence suggests that c…
Abstract The reaction of 2,4,6‐tris(2‐pyridyl)‐1,3,5‐triazine (tptz) with Cu(BF 4 ) 2 ·3H 2 O and N , N ‐bis(3‐aminopropyl)methylamine (Medpt) yielded the monomeric complex [(tptz)Cu II (Medpt)](BF 4 ) 2 ·2MeOH ( 1 ) whereas reaction of tptz with CuCl 2 ·2H 2 O yielded the dinuclear complex [{Cu II Cl 2 }(tptz){Cu II…
The solubility of MgO in molten MgCl2 and CaCl2 has been studied. In pure MgCl2, the MgO solubility was determined to be 0.63—2.90 mol% at 1073—1373 K, while 0.24—0.63 mol% in pure CaCl2 at 1223—1523 K. The effects of MgCl2 and CaO addition to CaCl2 were investigated, and the solubility product of MgO was found to inc…
This study investigated the effect of extractives in wood flour on the mechanical properties of wood-polypropylene (PP) composites. Three different solvents, acetone/water, dioxane/water and benzene/ethanol, were used to remove extractives in both pine and Douglas fir wood flour. X-ray photoelectron spectroscopy (XPS)…
Decreased spectral overlap between a donor biotinylated poly(p-phenylene ethynylene) and a chromophore-labeled streptavidin acceptor leads to better observed fluorescence resonance energy transfer.
To theoretically examine the existence of half-metals in Co-Cr-Fe-Al alloys, band calculations were carried out for these alloys. Seeing energy dispersion curves E(k) of Co2CrAl with the Heusler structure, we find that the Fermi level intersects the E(k) curves in the majority-spin state but is located at the energy g…