Materials Literature
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The reaction of HNO3 with decane (C10H22) soot generated in the laboratory has been studied in a Knudsen flow reactor. Two different types of soot were produced: Soot originating from a rich flame of decane and air (“grey” soot) and soot generated from a leaner flame of decane and air (“black” soot). Both HNO3 uptake…
Vapor-Grown Carbon Fibers may be modified by surface or temperature treatment to be effective in reinforcing or adding conductivity to polymeric composites.
Boron suboxide (B6O) sintered bodies were prepared by a solid state reaction and a hot pressing method. The thermoelectric properties of B6O were compared with those of B4C. The electrical conductivity was smaller than that of B4C, and the Seebeck coefficient was twice as large as that of B4C indicating p-type conduct…
This paper deals with the irradiation creep behavior of Zr-base alloys, both under normal operating and power transient conditions. The first part is devoted to the creep experiments, which were conducted in the OSIRIS or SILOE metallurgical test reactors using argon internally pressurized cladding tubes to simulate t…
Recent investigation of naturally coloured cottons have shown that brown cotton is very similar in morphology to white cotton while green cotton is different since it contains suberin. Suberin containing mainly bifunctional fatty acids can theoretically form a three dimensional network in the presence of glycerol, whi…
The effects caused by an excess quantity of ionized gas molecules within the low vacuum, variable pressure and environmental scanning electron microscope (ESEM) are described with reference to mechanisms by which they can influence imaging conditions. These effects can include specimen charging, recombination and deve…
This paper describes various parameters affecting to the (111) orientation in electroplating copper conductive layers. Control of this orientation is important because resistivity, stress, adhesion strength, and electromigration resistance of copper layer are affected largely by this orientation. This orientation cann…
Abstract Porphyrins are the most widespread of all prosthetic groups found in Nature. The ubiquity of their functions in Nature led researchers around the globe to focus their attention on these highly colored macrocycles. The interdisciplinary interest generated by porphyrins resulted in the syntheses of modified por…
A three-dimensional mathematical model was developed to investigate interactions between aerobic biofilms and a metal surface, and to clarify conditions under which the onset of localized corrosion caused by aerobic microorganisms is likely to occur. The model includes transport of seven chemical species by diffusion…
Orange phosphorescence from Eu 3+ ‐activated CaO and SrO and violet phosphorescence from Pb 2+ ‐activated SrO were clearly observed after the materials had been excited with ultraviolet light. The orange phosphorescence resulted from 5 D 0 to 7 F 1 transitions of the Eu 3+ ions and the violet from 3 P 0 to 1 S 0 trans…
Preferential nucleation of dynamic grains at triple junction (TJ) was investigated in copper tricrystal during high-temperature deformation. The nucleation of the dynamic grains at the TJ was observed at much lower strain than the peak strain where dynamic recrystallization (DRX) extensively took place. Further strain…
The growth of cuprous benzotriazole films (CuBTA), formed on Cu monocrystals and vapor deposited films under controlled potential conditions in 1 M 1-H benzotriazole, has been studied by measurement of electrical charge. Film growth follows a direct logarithmic relationship to ∼25 nm thickness and effects of crystallo…
The model of organic film growth on a cathode during electrodeposition process proposes the current density-time and film thickness-time relationships and enables the evaluation of the rate contents for the electrochemical reaction of OH? ion evolution and for the chemical reaction of organic film deposition. The depe…
The material properties and the microstructure of the scaffold are important parameters that determine the suitability of a material for tissue growth and controlled drug release. Because of its non-toxic, biocompatible, biodegradable, and antithrombogenic nature, chitosan has generated enormous interest for such appl…
Structural phase transitions of Ba 2 In 2 O 5 at high temperatures were investigated by thermal gravimetric-differential thermal analysis (TG-DTA), dilatometry, and differential scanning calorimetry (DSC). It was revealed that there exist three phases in Ba 2 In 2 O 5 . At ∼910°C, a first-order structural phase transi…
The crystal structure refinements of six M/Mg/Al mixed oxides containing cations in the ratio M∶Mg∶Al = 5∶71∶24 (where M is Ru, Rh or Ir) have been carried out using both neutron and X-ray powder full pattern diffraction analysis. The samples were obtained by thermal decomposition of hydrotalcite-type anionic clays at…
Attractive colloidal particles can exhibit a fluid to solid phase transition if the magnitude of the attractive interaction is sufficiently large, if the volume fraction is sufficiently high, and if the applied stress is sufficiently small. The nature of this fluid to solid transition is similar for many different col…
Stator winding failures are generally attributed to groundwall or turn insulation failures. The failure mechanism involves the gradual development of a weakness in the insulation. This weakness is usually caused by a trapped void that is continuously enlarging due to ever-increasing corona or partial discharge activit…
We establish that a mode-coupling approximation for the dynamics of multi-component systems obeying Smoluchowski dynamics preserves a subtle yet fundamental property: the partial density correlation functions are, considered as matrices, completely monotone, i.e., they can exactly be written as superpositions of decay…
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