Materials Literature
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Electrospinning of collagen (COL)/silk fibroin (SF) blend solutions in 1,1,1,3,3,3-hexafluoro-2-propanol was investigated for fabrication of a biocompatible and biomimetic nanostructured scaffold for tissue engineering. The morphology of the electrospun COL/SF blend nanofibers was observed by scanning electron microsc…
In a very recent x-ray magnetic circular dichroism experiment concerning with Ru and Rh impurities and metal films on Ag(001) substrate, no local magnetic momen ts were displayed in direct contradiction with previous theoretical works. It is thought that there can be three main reasons for this inconsistency: relaxati…
Nanostructured Ag0.8Pbm+xSbTem+2 (m = 18, x = 4.5) system thermoelectric materials have been fabricated by combining mechanical alloying (MA) and spark plasma sintering (SPS) methods followed by annealing for several days to investigate the effect on microstructure and thermoelectric performance. It was found that app…
The microarc oxidation (MAO) films on AZ31 magnesium alloy were modified by high-intensity pulsed ion beam (HIPIB) at an ion current density of 200 A/cm2 with 1-5 shots. The modified MAO films presented a corrosion resistance superior to that of the original films. Scanning electron microscopy (SEM) observation reveal…
Electrochemical corrosion behaviors of two common-used ship coatings——epoxy aluminum coating, chloride rubber iron red coating and their composite coatings immersed in 3.5%NaCl solution were investigated using electrochemical impedance spectroscopy combined with open circuit potential measurements and SEM micrograph a…
At first, some comments are made concerning the capacity of prediction of the microstructure for shape memory alloys by the Crystallographical Theory of Martensite. Secondly, the basic foundations of the phenomenological modeling of shape memory alloys behavior at the macroscopic scale are given. A special attention i…
Now the oxidation-resistant glass-ceramic coatings have been widely used in reducing surface oxidation of Ti alloys during heat process. In present investigation, a lead-free glass-ceramic coating with wider protection temperature range was developed to protect Ti-6Al-4V alloy from oxidation. The phase compositions of…
Molybdenum has many prominent properties, such as high melting point, good thermal properties, low erosion rate and so on, which make it promising candidate materials for plasma facing materials in the next fusion reactor. In the present work, molybdenum coatings were deposited onto the oxygen-free copper substrates b…
The (35)Cl nuclear quadrupole resonance (NQR) frequencies (nu(Q)) in caesium and sodium chlorates were measured as a function of temperature, from 77 to 300 K at different pressures up to 5.1 kbar, and the data were analysed to estimate the volume dependence of the electric field gradient (EFG), torsional frequency an…
Aluminium-chromium based alloys are promising candidates for manufacture of light components exposed to elevated temperatures. The work describes properties of Al-6.0wt.%Cr- 2.1wt.%Fe-0.5wt.%Ti alloy. The rapidly solidified powder was prepared by the pressure nitrogen melt atomization. The powder was then subject to h…
Ti ion and C ion is implanted into AZ31 magnesium alloy surface by metal vapor vacuum arc (MEVVA) implanter operating with a modified cathode. This metal arc ion source has a broad beam and high current capabilities. Implantation energy is fixed at 45K eV and dose is 9×1017 cm-2 and 3×1017 cm-2 respectively. Through i…
Under SOFCs operating condition, the cathode reaction rate is determined by triple phase boundary (TPB) areas which are associated with the geometry of the interface between the cathode and the electrolyte. In this paper, YSZ electrolyte was deposited by atmospheric plasma spraying (APS). A nano-scaled lanthanum stron…
In order to improve corrosion resistance of galvanized steel, a novel cerium-phytic acid passivation treatment was studied. The process of cerium-phytic acid passivation on galvanized steel was optimized. The corrosion resistance of cerium-phytic passivated samples was tested by dropping test and weight loss test. The…
The YCo 4 B exhibits peculiar behavior of the magnetization curves related to the occurrence of a spin reorientation phenomenon at low temperature and of a first-order magnetization process. We present here a detailed investigation of the pressure dependence of this anomaly in a wide temperature range 5–300 K. The evo…
This work describes a comparative study carried out on the reactivity and on the development of the porosity of a carbon fiber when it was gasified with supercritical CO 2 (SCCO 2 ) and with CO 2 at atmospheric pressure (ATCO 2 ). The kinetic results show that for the same temperature the rate of gasification of the f…
We have determined the magnetic structure of the field-induced phases of the multiferroic hexagonal manganite $\mathrm{Ho}\mathrm{Mn}{\mathrm{O}}_{3}$ by combining integrated intensity data, collected with unpolarized neutrons on a single crystal, with measurements of the polarization dependence of the intensities of…
NiAl shape memory alloy thin films have been fabricated by a solid-state reaction in Al/Ni bilayer films. Two kinds of synthesis have been used. The first one consists in heating an Al/Ni bilayer film system to temperatures above 480 K. The second one implies the successive deposition of nickel and aluminum films onto…
A silicon interlayer was introduced between the DLC films and 202 stainless steel substrate using a medium frequency magnetron sputtering. The adhesion was evaluated by the scratch tests and wear tests together. Two main parameters in the deposition process of Si interlayers, i.e. the sputtering current and pulse bias…
We have developed Crystal Catcher, a new device for manipulating protein crystals. Crystal Catcher directly captures a crystal with an adhesive. The easy and stable removal of a protein crystal from a drop has been achieved using the Crystal Catcher. The crystal picked up on the Crystal Catcher is positioned in the cr…
This paper presents a preliminary investigation of the effectiveness of two novel magnesia-based cements in the stabilization/solidification of contaminated soils. The first is a reactive magnesia cement, which includes significant quantities of fly ash and in some cases also contains Portland cement. Magnesia cements…