Materials Literature
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In this study, we investigated the effect of aluminum species on hydrogen adsorption on carbon nanotube (CNT). This hydrogen absorption mechanism has been clarified by potential energy analysis and molecular-dynamics simulations. There were potential barriers in both reactions, absorption and dissociation of hydrogen…
Submicrometric catalyst patterns have been fabricated by atomic force nanolithography and the subsequent selective growth of carbon nanotubes has been successfully verified. Rectangular stripes (∼350 nm wide) were engraved onto a polymethylmethacrylate film, deposited onto SiO2/Si, by polymer removal with atomic force…
Thermal analysis and Raman spectra were carried out in SrBi2Ta2O9 (SBT) nanoparticles to investigate phase transitions. Two anomalies have been observed in temperature dependence of specific heat for SBT nanoparticles. Under the combination with Raman spectra, it indicates that there exists a new ferroelectric interme…
A chemomechanical regeneration system was used for the recycling of SBR-based (butadiene-styrene copolymer) elastomer waste. The effect of the addition of mixtures of TBBS (N-tert-butyl-2-benzothiazole sulphenamide), stearic acid, zinc oxide, and sulfur on the rheometric, mechanical, and swelling properties of SBR-bas…
This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if…
Barium titanate with A-site substituted by various amount of bismuth oxide (Ba1-x BixTiO3, abbreviated as BBT, x=0.05, 0.1, 0.15) were prepared by solid-state reaction. The effect of bismuth substitution on crystallographic phase, dielectric and ferroelectric properties was studied. The X-ray diffraction shows that th…
A unique melt spinning equipment for E-glass is compatibly combined with a melt spinning extruder to manufacture commingled yarns. The in-situ commingling enables to combine homogeneously both glass and polypropylene filament arrays in one processing step and without fibre damage compared to commingling by air texturi…
Noncrystalline molybdenum trisulfide is an important precursor for preparation of nano-MoS 2 by sodium molybdate using thioacetamide or sodium sulfide as a sulfur source under an acid condition via quick homogeneous precipitation method in our previous study. The morphology, size and shape of MoS 3 noncrystalline part…
Abnormal grain growth (AGG) takes place in many metallic systems especially after recrystallization of deformed polycrystals. The growth advantage has been attributed to the high mobility of the grain boundaries of the abnormally-growing grains. As a new approach to the growth advantage of AGG, however, we suggested t…
Equal channel angular pressing (ECAP) was applied to commercial pure magnesium alloy, Mg-1wt%Si alloy and Mg-4.2wt%Zn-0.7wt%Y alloy. With increasing ECAP passes, both tensile strength and ductility of the alloys are increased, which are mainly resulted from the grain refinement. At the same time, for the Mg-Zn-Y alloy…
We have studied Al∕Nb interface with help of spectroscopy of reflected electrons. Ion sputtering combined with monitoring of Auger peaks has been used to approach the interface. The developed method of quantitative interpretation of spectra allowed us to characterize the distribution of Al and Nb in the interface regi…
Application of TiNi shape memory alloy in biomedical field is rapidly expanding. Some of the applications calls for non-conventional properties, which may require new methods of thermomechanical treatment and surface modification. In the present study, the effect of nanocrystallization/amorphization by various method…
Immiscible polystyrene (PS)/clay nanocomposites undergo intercalation upon spatially tuned and atmosphere-regulated thermal-oxidative chain scission (see figure), with resultant increases in moduli and thermal stability. Shortened PS chains generated by scission predominantly locate in the clay galleries and not in th…
On the basis of the percolation model for electrical breakdown in insulating polymers, a simulation approach was put forward for the process of electrical aging. The deteriorated regions formed by bond scission are expressed as the sites with lower trap barriers, and the local deterioration rate is related to both the…
There has been a big demand for increased vehicle safety and weight reduction of auto-bodies. An extensive use of high strength steels is one of the ways to answer the requirement. Since the crashworthiness is improved by applications of higher strength steels to crashworthiness conscious structural components, variou…
The phase transformations and the microstructure developments in Fe-Cu base alloys during isothermal aging are simulated based on the phase-field method. Since the chemical free energy used in this simulation is obtained from the thermodynamic database of phase diagrams, the calculated microstructure changes are direc…
This study investigates the effect of recycling/reprocessing on the physical and mechanical properties of composites based on radiata pine (Pinus Radiata) fibre and polypropylene (PP) with a maleated polypropylene (MAPP) coupling agent, produced using a twin-screw extruder, followed by injection moulding. Composites c…
A computational model for the hot-filament chemical vapour deposition process to produce diamond films, Olivas-Martínez, M, Pérez-Tello, M, Cabanillas-López, R, Contreras-López, O, Soto-Herrera, G, Castillón-Barraza, F
Texture evolution and microstructure development of hot extruded pure magnesium and the magnesium alloy AZ31 deformed by plane strain deformation at select temperatures and strain rates were investigated using X-ray techniques, electron back scattered diffraction (EBSD) and optical microscopy. At a deformation tempera…
An overview of the microstructure evolution, mechanical properties, electrical conductivity and microalloying is presented and some further research fields are suggested for Cu-Ag microcomposites. The nanostructures of filamentary morphology in these microcomposites can be obtained by heavy deformation. Both the mecha…