Materials Literature
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The adsorption and thermal reactivity of NO and CO over an Ir(211) surface were studied using x-ray photoelectron spectroscopy, infrared reflection absorption spectroscopy, and temperature-programed desorption. NO adsorbed on the atop site of the (111) terrace and the bridge site of the (100) step at 273K. In contrast…
Vamac GR is generally cured by amine curative systems but in some cases peroxide is also used. Here both the curative systems amine (DPG and MDA) as well as peroxide (Varox DCP 40C) have been used. Mixing with different nanofillers in the presence of different curative systems is expected to improve interchain cross-l…
Nanoporous titania was obtained by anodic oxidation of magnetron deposited aluminum–titanium alloy films with subsequent alumina etching. This method has the merit of low temperature operation. The porosity of the titania film obtained can be controlled by the titanium concentration in the alloy. These nanoporous tita…
The surfaces of three kinds of polymer were treated using pulsed oxygen plasma: poly(ether ether ketone) (PEEK), liquid crystalline polymer (LCP), and linear-low-density polyethylene (L-LDPE). Also using pulsed oxygen plasma, oxygen functional groups were introduced on polymer surfaces. The effects of oxygen functiona…
By using techniques of severe plastic deformation a metallic material can be subjected to an enormous strain that is not achievable by conventional methods of deformation. In this study nickel single crystals with different crystallographic orientation and nickel polycrystals were deformed by high pressure torsion. Al…
This article reports on sample preparation, characterization, CO2 sorption behavior, and foaming of blends of poly L-lactic acid (PLLA) and poly methyl methacrylate (PMMA) in compositions of 75/25, 50/50, and 25/75 wt.%. The crystallization and thermal decomposition behavior of the polymer blends were found to be depe…
The details of nonlinear oscillations and collapse of elongated bubbles, subject to large internal overpressure, are studied by a boundary integral method. Weak viscous effects on the liquid side are accounted for by integrating the equations of motion across the boundary layer that is formed adjacent to the interface…
Texture evolution and microstructure development of hot extruded magnesium alloy AZ31 deformed by PSC and uniaxial deformation at select temperatures and a constant strain rate of 10-4 s-1 were investigated and compared using X-ray techniques, electron back scattered diffraction (EBSD) and optical microscopy. At a def…
The stability of the B2 CuxFe1−x Al phases and the energy of defect formation are studied using ab initio band calculations. For B2 CuxFe1−x Al alloys, vacancies in the 3d-metal sublattice and configurations with the minimum number of Fe-Cu bonds in the first coordination shell (including Fe antisite defects, which ha…
The kinetics of the exchange of the Cd 2+ ions in the complexes with the natural protogroup porphyrins (protoporphyrin, mesoporphyrin, deuteroporphyrin, and hematoporphyrin) for the Zn 2+ ions is studied. The stoichiometric ratios of components in the reaction of cadmium exchange for zinc in acetonitrile and DMSO are…
Crack initiation testing sponsored under the International IASCC Advisory Committee Phase 2 and Phase 3 programs has led to the development of a sizeable crack initiation database which now contains more than 100 test data points. The database was generated over a 6-year period with a majority of the testing performed…
Practical application is a primary concern in recent nanocomposite research. In an effort to use nanocomposites as insulating materials for heavy electric apparatus, titania nano-filler and silica micro-filler mixed composites were newly prepared for this study. These composites had the same low thermal expansion as a…
Nanocrystalline zinc oxide-thin films have drawn the attention of researchers due to its attractive properties like transparency in visible region, abundance in nature and gas sensitivity. Nanostructured Zinc oxide (ZnO) thin films were grown on silicon, alumina and glass substrates at various substrate temperatures u…
The mineralogical quantification of soils species is mainly obtained by analysis of X-ray diffraction (XRD) patterns. \nThe classic method, for these analyses, is limited to semi quantitative determinations due to the overlapping of different specie’s peaks and processes of absorption of the constituents, the wide…
A tool to evaluate the subjective wearing comfort of baseball caps from the objective measurement of pressure was developed. Comfortable fittability index (CFI) and holding power (HP) were defined to represent the subjective wearing comfort of caps. In order to define the CFI, average pressure and pressure distributio…
The high specific surface of porous silicon and its high reactivity makes this material a good candidate for chemical sensors based on electrical or electromechanical devices. In this paper, several processes are presented to realize free-standing porous silicon microstructures (membranes and cantilever beams). Good r…
Continuous on-line monitoring of partial discharge (PD) activities involves recording large amounts of data and a challenging task is to extract useful information from them. Thus, data mining plays a very important role. In this paper, data of PD in power cables are obtained from on-site monitoring and from laborator…
Toluene vapor was adsorbed in a laboratory‐scale packed‐bed adsorber using granular activated carbon (GAC) at constant pressure (101.3 kPa). The adsorber was operated batchwise with the charge of GAC in the range of 2–4 g to obtain the breakthrough curves of toluene vapor. Experiments were carried out at different ads…
The occurrence of surface defects in TPO injected foam parts has been investigated. Unlike typical flow marks such as tiger stripes that affect the surface quality of injected bulk parts, jetting and silver streaks are the major problems encountered with the TPO foamed parts. Systematic experiments are performed to st…
A new preparative procedure for the synthesis of new bifunctional azo monomers with different ratios of methacryloyl and hydroxyl groups has been developed. The monomers thus prepared contain a nonlinear optical 4′-amino-4-nitroazobenzene group and can be involved in polymerization, polycondensation, and polymer-analo…