Materials Literature
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TiNi SHAPE MEMORY alloy preparation for the multiaxial tests was explained. Stable response of the alloy was realized, not by training but by an effective combination of the alloying technique and the heat treatment: Ti-51.0at%Ni polycrystalline shape memory alloy heat-treated by annealing at 673 K for 3.6 ks followed…
The Department of Energy (DOE) must treat and safely dispose of its radioactive tank contents, which can be separated into high-level waste (HLW) and low-level waste (LLW) fractions. Since the unit costs of treatment and disposal are much higher for HLW than for LLW, technologies to reduce the amount of HLW are being…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation P. M. Nikolić, Z. Djinović, D. M. Todorović, V. Jović, Z. Djurić, A. I. Bojičić, D. Urošević, V.…
The structural change of the (100-x) (0.6Li2S⋅0.4SiS2)⋅xLi3PO4 oxysulfide glasses during crystallization was analyzed by means of solid-state nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS). The unique tetrahedral units of SiOnS4-n (n=1, 2, 3) and POnS4-n (n=1, 2, 3) present in the glass sa…
The intercalation complex of kaolinite and potassium acetate (KAc) was studied by HTXRD, IR spectroscopy and DTA-TG. The HTXRD patterns indicate that the 14.06 Aa basal spacing of the complex contracts to 11.77 Aa and 9.35 Aafter heating at 60 degrees C. The DTA-TG data indicate that water is present in these new comp…
A guided-mode resonance transmission filter is demonstrated experimentally. A five-layer fiberglass/air structure with a waveguide-grating in the center layer is designed, fabricated, and tested. A close match between theoretical and experimental spectral characteristics is found over the spectral range of 4-20 GHz. G…
This paper discusses the development of a simulation model to study the propagation of partial discharge (PD) pulses of transformers in a 500 kV substation. The results will be used to design an on-line PD monitoring system for transformers. The impedance matrix of a 500 kV, single-phase transformer is computed based…
The present study is focused on predicting fragment number and size distribution in dynamic fragmentation processes. Because of the unloading effect of release waves arising from fracture nucleations, we consider there to be a minimum value for fragment size. Combined with the assumption that the sites of fracture nuc…
An experimental study on microscopic scale measurements of thermal expansion and temperature by using the Scanning Joule Expansion Microscope (SJEM) based on the Atomic Force Microscope (AFM) was conducted. While the AFM is scanning on the sample heated by AC current, topographical and thermal expansion images are mea…
The objective of the present research is to utilise the advantages offered by renewable resources for the development of biodegradable composite materials. Two types of biocomposites using flax fibres as a reinforcement and poly[(R)-3-hydroxyalkanoates] (PHA) as a biodegradable polymer matrix were manufactured: First,…
A series of gold(I) complexes containing aminoxyl radical-substituted phosphine ligands has been prepared. Complexes chloro{2-[(p-diphenylphosphino)phenyl]-4,4,5,5-tetramethylimidazoline 1-oxyl 3-oxide}gold and [tert-butyl(p-diphenylphosphinophenyl)aminoxyl]chlorogold were prepared by reaction of the free radical phos…
Several Ni-containing perovskite-related oxides of stoichiometries RNiO3 (R=La, Pr, Eu), La1-xAxNiO3 (A=Sr, Th), LaNiO2.5, BaNiO2 and BaNiO3 were studied as catalysts for hydrogen peroxide decomposition. In all cases the samples were single-phase materials characterized structurally by X-ray and neutron power diffract…
A humidity sensing device, named a moisture sensitive field effect transistor (HUMIFET) has been fabricated on an n-type Si wafer using conventional VLSI technology. A series of sensors, each having area approximately 3.0 mm2 have been designed on a single Si wafer. The FET device is an n-channel MISFET with a duplex…
After stating the reasons leading to EDF's interest in 420 kV GIL and the technical and economic imperatives to be considered, the principles adopted for the insulation co-ordination of 420 kV GIL up to a few tens of kilometers long are described. All the insulation coordination approach is based on the global failure…
Wide-band absorbing characteristics in the GHz-range are identified in the ferrite-rubber composite sheets with the periodic structure of an air cavity. Co/sub 2/Z and Ni-Zn ferrites, which have been prepared by ceramic processing, are used as the absorbent fillers. On the basis of a synthesized capacitance and induct…
Plastic behaviour of the β nickel-titanium alloys with nearly-equiatomic compositions, Ti-49.5, 50.0 and 50.5 mol%Ni, has been studied. The alloys were highly ductile due to dislocation glide at temperatures where the β-phase was in equilibrium. The ductility became largest at the lowest temperature in the stability r…
Magnets with high electrical resistance were prepared by electrically isolating Sm/sub 2/Co/sub 17/ and Nd/sub 2/Fe/sub 14/B powder particles. This is achieved by a polymer mixture consisting of epoxy polyester-insulant (EPI), polyvinylbutyral (PVB), epoxy resin (ER) and silane coupling (SC). The properties of interes…
Anion related radiation-induced coloring of optical phosphate glasses doped with chloride or sulfate was studied by means of optical absorption spectroscopy and electron-paramagnetic resonance spectroscopy. The effect of higher sulfate and chloride concentration (to 10 mol%) was investigated for fluoride-phosphate gla…
The protonated tripodal podand [L6 + H]+ forms stable and organized monometallic podates [Ln(L6 + H)]4+ where LnIII is facially nine-coordinated by three wrapped unsymmetrical tridentate binding units. An unusual trifurcated hydrogen bond assists the organisation of the covalent tripod.
Differential scanning calorimetry, dilatometric, dielectric and linear birefringence measurements have been used to study the ferroelastic [C(NH 2 ) 3 ] 3 Bi 2 Br 9 crystal. The x-ray studies showed that it crystallizes at room temperature in the monoclinic symmetry, space group P 2 1 / m . The crystal undergoes a com…