Advanced Materials Research Vols. 295-297

Abstract: The complex plating-sulfurizing process which fitted magnetron sputtering together with low temperature ion sulfurizing, was utilized to prepare a new CrN-based nano composite solid lubrication films with different Mo content. The structure, surface morphology, composition, and valence states of CrMoN composite coatings are tested by XRD, EDS, SEM and XPS respectively. The SEM results showed that the roughness of CrN composite coating reduces with addition of Mo element. X-ray diffraction pattern indicated that the preferential growth orientation of the coatings is changed from CrN (111) to CrN (220) after the addition of Mo element, the diffraction peaks shift leftwards as Mo content increasing, and the majority of phases are Mo₂N and CrN, besides which MoS₂ and Cr₂S₃ were created.

Abstract: Highly c-axis oriented ZnO films were grown on the nucleation sides of freestanding diamond (FSD) substrates with homobuffer layer by radio-frequency (RF) magnetron sputtering method. The effect of oxygen partial pressure (O₂/Ar) on the properties of ZnO films was studied. ZnO-based UV photoconductive detector with planar interdigital (IDT) electrodes was fabricated by the lift off technique. Current-voltage (I-V) characteristics of the detector under ultraviolet (UV) light were measured and discussed.

Abstract: The BaTiO₃/La_0.7Sr_0.3MnO₃((BTO/LSMO) bilayer films had been epitaxially grown on (001) oriented LaAlO₃ (LAO) single crystal substrate by using pulsed laser deposition technique,. The measurements of electric and magnetic properties showed that the bilayer heterostructure possessed low dielectric constant (ε_r=263), high ferromagnetic curie temperature (T_c=317K), and natural ferromagnetic and ferroelectric properties. The magnetoelectric (ME) voltage coefficient for the bilayer heterostructures at room temperature was around 140 mV/cm.Oe, which is one magnitude order higher than others. The interface coupling parameter k between ferromagnetic and ferroelectric layers was 0.68.

Abstract: The properties of PE/PET bicomponent spunbonded nonwovens with various areal density in certain processes were tested and analyzed. The areal density of samples can be changed by adjusting the speed of net belt. The evacuated materials which are discussed in this paper are PE/PET bicomponent spunbonded nonwovens whose areal density are 15 g/m², 20 g/m², 30 g/m², 40 g/m², 50 g/m², 60 g/m², 70 g/m² and 82 g/m². The tensile strength, evenness and flexibility of the samples were measured. Also, the flexibility of PET spunbonded nonwoven were compared with the PE/PET bicomponent spunbonded nonwoven. The conclusion is that the strength, unevenness increase when the areal density increases, but the flexibility decreases. the flexibility of PE/PET nonwoven is superior to PET nonwoven, especially low areal density.

Abstract: In this study a comprehensive field test program was carried out to closely monitor the ground responses during open-ended concrete pipe piles jacking into a deposit mainly consisting of silt soils. The horizontal soil movement due to pile jacking was of depth-dependent characteristic that cylindrical cavity expansion models were unable to capture. The magnitude of displacement decreased rapidly with depth, and no discernible deflection was measured below the depth of the pile tip. The maximum displacement along the depth occurred at clayey-silt layer with relative lower permeability. The rebound of soil movement may be attributed to the setup effect following the piling stage.

Abstract: To study deeply ink penetration condition inside the paper, an ink penetration model on the basis of Kubelka-Munk theory is built up in the paper, and infer out the formula of ink penetration depth, consisting of paper thickness and various brightness. And then the test value and calculation value of ink penetration depth are compared. The study results show that the two values are almost the same, so the state of ink penetration depth can be effectively estimated just by paper brightness.

Abstract: In order to find out the variation law of ink tack during the printing, the ink tack value under 9 different linear velocities of ink distributing roller was tested with an electric ink tack-o-meter in this article, and the relation equations between tack value and the roller linear velocity were built up. The study results showed that the higher the linear speed was, the larger the tack value was, and it would stay in a relatively high tack value (regarded as infinite tack value). At the same time, the relationships between ink tack and the roller linear velocity was different for various inks, so did the infinite tack value.

Abstract: The most commonly used Micro tubular solid oxide fuel cell (MT-SOFC) anode material is a two phase nickel and yttria stabilized zirconia (Ni/YSZ) cermet. And the mechanical stability of anode support layer, in anode-supported electrolyte designs, is very important for large scale applications. During the assembly of stack and normal operation, MT-SOFC is easy to crack under the fuel pressure and thermal loading due to various mechanical properties. In this study, MT-SOFC model was founded on the background of MT-SOFC stack of electric vehicle and was analyzed by finite element method, based on theories of elasto-plasticity, thermo-mechanical coupling. The effect of thermal load was investigated. It concluded that the failure of the micro-tubular cell occurs mainly because of the residual stress due to the mismatch between the coefficients of thermal expansion of the materials of the electrode assembly. The results are important for studying the life and final spallation of MT-SOFC of electric vehicle.

Abstract: 8 kinds of blended knitted socks with different materials of nylon filament, bamboo and cotton fibers are taken as research objectives with a view to investigating the thermal-moisture comfort of bamboo fiber socks. The sense of well-being, thermal conductivity, moisture regain, water vapor permeability, wicking height and air permeability of the socks are tested, and the thermal-moisture comfort of socks with different fiber contents are studied. By using the gray cluster analysis, the integrated evaluation of thermal-moisture comfort of the socks is conducted. The results shows that the socks containing bamboo fibers have better warm-retention and water vapor transmission properties, their thermal-moisture comfort are better than that of nylon filament and cotton fibers in summer.

Abstract: The Pb( )-imprinted polymers were synthesized through homogeneous graft copolymerization of cellulose with acrylic acid in an homogeneous medium using Pb( ) as template. The prepared copolymers were characterized by FTIR and SEM. The batch adsorption experiments were conducted to evaluate the adsorption capacity of the Pb( )-imprinted beads. The results demonstrated that the imprinted beads showed significantly higher imprinting efficiency than those only consisting of poly(acrylic acid) without Pb( )-imprinted, and the selectively adsorption capacity of Pb( ) on imprinted beads was higher than other competitive ions(Cu( ) or Ni( )). The imprinted beads also showed much better stability in rebinding of the imprinted ions after three adsorption-regeneration cycles.