Materials Literature
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Equal channel angular pressing (ECAP) is widely studied for its potential to produce ultra-fine grained (UFG) structure in TiNi shape memory alloys (SMA). In the present work, the effect of multipass ECAP parameters on the deformation behavior and strain distribution was investigated, at various deformation temperatur…
In this paper, a simple method is reported to obtain nitrogen-doped p-ZnO film. In this method NH3 plasma, generated in a plasma-enhanced chemical vapor deposition system, was employed to treat ZnO thin film. By hall-effect measurement a p type conductivity was observed for the treated film with the hole density of 3.…
Spherical submicron SiO2 particles have been coated with luminescent Lu2O3: Eu3+ layers by a Pechini sol-gel process, resulting in the formation of SiO2@Lu2O3: Eu3+ core-shell particles(300, 500 nm). The obtained core–shell phosphors have perfect spherical shape with narrow size distribution, smooth surface and non-ag…
This paper evaluate how colorimetry change of ethylene propylene diene rubber (EPDM)/Aluminium oxide (Al2O3) composites when added with four types of crystallized resins. The results indicate that the filler Al2O3 can turn EPDM control from lighter, redder, and yellower to darker, greener and bluer, respectively. The…
The development of standard simple of tin bronze for casting is presented,design of composition, selection melting temperature 1150 °C, put into 0.2m3/kg argon gas, stirring with 100rpm for 1min, keeping temperature for 30min as the optimum process conditions, coarse and fine tests of homogeneity with data analyses, d…
The ZnO powder was successfully obtained by calcining the basic zinc carbonate, which was synthesized from clinker digestion solution of zinc oxide ore using analytical Na2CO3. The factors of mol ratio of Na2CO3 to ZnSO4 and reaction temperature were discussed at stirring intensity 400 rpm. Both the obtained basic zin…
Iron tailings are mineral wastes obtained from industrial processing and magnetic separation of iron ore. Foam concrete with iron tailings can be made with iron tailings, cement, fly ash, silica fume, polypropylene fiber, superplasticizer, early strength agent, accelerating agent and foaming agent. The influences of p…
Multi-walled carbon nanotubes (MWCNT) was first treated by concentrated H2SO4/HNO3, and then epoxy (EP) was filled with as-received and acid treated MWCNT. Fourier transform infrared spectroscopy (FT-IR) was used to analyze the surface characteristics of MWCNT. Result of electrical conductivity analysis reveals that t…
Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were utilized to study the microstructure and mechanical behavior of an Al-Cu-Mg alloy after tensile test at 125°C, 150°C, 175°C and 200 °C, respectively. The yield strength and ultimate tensile strength decreased with the increase of temper…
Biodegradable poly(l-lactide) (l-PLA) solution-grown crystals (SGC), which are the lozenge-shaped morphology of unique dimension with one side of 12 μm, were grown from dilute solution of acetonitrile. Morphological changes by alkaline degradation and mechanical deformation of PLLA SGC were investigated by atomic forc…
The thermal safety of one new-type DB propellant SZQu-1 was studied by ARC. The test results were compared with the one of double-base propellant SF-3. The ARC test results show that, in an ideal adiabatic environment, the initial exothermic temperature for SZQu-1 is 129.0°C, the adiabatic temperature rise is 787.0°C,…
After precise grinding n-WC/12Co coatings with diamond wheel , there is residual stress on the surface of parts ,the paper drawn conclusions about this study,it Pointed out the contents of further study ,the direction of farther study was prospected in this study too. The interaction between the abrasive grains and th…
Abstract TEX is an explosive with interesting isowurtzitane cage structure. It exhibits successful explosion performance and good sensitivity. Herein, the tendency of TEX to form hydroperoxide structure under storage conditions was examined by density functional treatment. Additionally the possible decomposition produ…
In order to obtain a biodegradable gemini cationic surfactant with high surface activity, N, N-dodecyldimethyl amine, epichlorohydrin and adipic acid were used as raw materials to synthesize the surfactant, and Fourier transform infrared spectroscopy was used to characterize the groups. And then the interface characte…
Carbon nanotubes (CNTs) have been widely studied for their unique size-dependent electrical, mechanical, and chemical properties. However, CNTs need to be precisely positioned in complex device structures. Dielectrophoresis (DEP) is an effective and practical method for precise assembly of CNTs. In this paper, the res…
Molecular dynamics (MD) simulations are performed to study the fracture behavior of armchair and zigzag graphene sheets with V-shaped notches subjected to tensile loading. The effects of temperature and notches depth on the fracture characteristics of the graphene sheets are examined. The results show that the cracks…
Polyfluorene derivative with amine side groups, namely, P1 was synthesized by the palladium-catalyzed coupling reaction of 2,5-dibromoaniline with 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9′-dioctylfluorene. Cross-linked polyazomethine P1-TPD (cross-linked polymer, P1/ terephthalic aldehyde) was obtained…
In this paper, the flame retardant HAS was applied to imparting flame retardance to polyester fabric. The result showed that the flame retardance of polyester fabric improved a lot. The limiting oxygen index increased while the concentration of HAS solution and temperature increased. Whiteness and elastic recovery ang…
We have investigated the effect of magnetic processing on orientation of gold nanowires (AuNWs) using a strong magnetic field. The results in the extinction spectra due to surface plasmon and SEM images in the presence of magnetic processing (10 T) showed that the long axes of AuNWs in side-by-side aggregation of AuNW…
Titanium carbonitride (TiCN) nanocrystaline powders were syntheiszed by reactive ball milling of titanium, graphite and urea. GN-2 ball milling was used and the rotation speed was 600rpm. The ratio of ball to material was 30:1, the milling time was from 10 hours to 50 hours. The powders milled for different time were…