Materials Literature
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Recently, well-ordered biological materials have been exploited to pattern inorganic nanoparticles into linear arrays that are of particular interest for nanoelectronic applications. In this work, a de novo designed E. coli-expressed polypeptide (previously shown to form highly rectilinear, β-sheet-containing structur…
The role of rare earth addition on the microstructure and texture during recrystallization of cold rolled sheets is investigated by a comparative study of pure Mg, Mg-3Y and Mg1.5Nd sheets. In pure Mg, nucleation occurs mainly at shear bands which results in a texture weakening. The basal-type texture re-strengthens r…
Ethylene oxide (EO) is an important organic chemical material, and Silver catalyst is an important petrochemical catalyst and is regarded as the core of EO/EG production process. The catalyst's performance is the major factor that directly determines the economic efficiency of commercial production of ethylene oxide.…
We researched and developed effective polymer bitumen composites for hermetic of deformities seals of concrete and asphalts roads, bridges, aerodrome and airfields used in hot climate conditions and high lands.
This paper utilized a novel oxidative co-precipitation method to synthesis hexagonal Fe3O4 nanometer particles, which assisted by a weakly magnetic field. The crystallinity, morphology, particle size distribution, compositions and magnetic properties of the as-prepared particles were investigated using powder X-ray di…
Diamond-coated drawing dies are considered as ideal drawing dies for their unique characteristics, such as high hardness, wear resistance and low friction. In order to utilize the superior characteristics of diamond coatings towards improving the drawing performance, the nonlinear FEM simulation is used to simulate th…
This paper investigates the bulk texture evolution during cold rolling and annealing of Dual Phase steels for different processing conditions, i.e. cold reduction within the reduction range of 45 to 73% and annealing at temperatures between 650 and 850°C, which includes the recovery, recrystallisation and partial phas…
The formation of Cube oriented elements in plane strain compressed aluminium has been studied by EBSD for both hot and cold deformations. By following the orientation changes of the same set of 176 grains deformed at 400 °C up to a strain of 1.2 using a split sample, it is shown that about 15% of the grains can break…
Colloidal crystal has attracted much attention both in fundamental crystal growth science and optical applications. This paper reports a simple and efficiency spin-coating method to fabricate high ordered colloidal crystals which have specific structures. We used the cleaned glass slide as substrates, the well dispers…
The microstructure and carbide precipitate of simulated coarse grain heat affected zone(CGHAZ) in modified high Cr ferritic heat-resistant steel at different cooling rates have been investigated by means of thermal simulator, optical microscope, SEM and TEM . It was found that the microstructure of CGHAZ of testing st…
The crystallographic alignment of microbands in a Goss oriented single crystal was investigated by two and three dimensional electron back scatter diffraction. The microband boundaries were found to be curved instead of being perfectly flat interfaces, and the overall alignment closely matched a potential slip plane.…
A simple fabrication method is reported to obtain patterned polydiacetylene (PDA) nanoparticle (NP) monolayers, on the basis of polymerization of diacetylene NPs by UV light or electron beam (EB) irradiation. The UV patterning can be made within a resolution of 1.1 µm, using a mesh copper grid as a mask. The EB irradi…
In the primary circuit of pressurized water reactors (PWR), the dynamic sealing system in reactor coolant pumps is ensured by mechanical seals whose ceramic parts are in contact with the cooling solution. During the stretch-out phase in reactor operation, characterized by low boric acid concentration, the leak-off flo…
The effects of the concentrations of NiSO4•6H2O, NaH2PO2•H2O and complexing agents in bath, temperature, pH, SiC concentration etc. on deposition rate of electroless Ni-P plating were systematically studied. The appropriate deposition rate of electroless Ni-P plating (17μm h-1) was obtained at the optimal conditions.…
A ZrNiSn half-Heusler compound was prepared by unidirectional solidification in short-duration microgravity. When a ZrNiSn half-Heusler pellet with Zr:Ni:Sn = 1:1:1(in mole) was solidified in microgravity (m-g) by two different cooling systems, the sample solidified in m-g had a different crystallographic alignment of…
Developing automatic assembly techniques is essential for the application of advanced nanomaterials such as carbon nanotubes (CNTs). This paper presents a review of current research progress towards the automatic assembly of CNTs by dielectrophoresis (DEP). The mechanisms and experimental set-up of three methods for c…
Grain boundary texture evolution in case of two of the Zr based alloys (Zircaloy-4 and Zr-2.5\%Nb) was studied. In case of Zircaloy-4, grain boundary texture evolution during $\beta$ $\to$ $\alpha$ phase transformation was monitored. Direct evidence of variant selection during this transformation is presented. In case…
Abstract. Experimental evidences of regular differences in the substructure condition of grains depending on their position within texture maxima are demonstrated. Analysis of generalized pole figures (GPF) for rolled metal materials shows that the strain hardening intensifies as an angular distance of grains from the…
Present work describes the development of texture in high purity aluminum under different modes of deformation by rolling using two different roll diameters, namely 300 and 610 mm. It has been observed that the change in both the roll diameter as well as the modes of rolling has a marked influence on the evolution of…
Optical microscopy on the etched cross-section of a nanocrystalline Ni-18 wt.% Fe electrodeposit revealed the existence of a banded structure perpendicular to the growth direction. To evaluate if the banded structure is affecting grain growth and texture development, EBSD orientation maps were obtained after annealing…