Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
CDR Critical Design Review M&PT Material and Process Technology CFD Computational Fluid Dynamic NASA National Aeronautics and Space Adminis tration CFRP Carbon Fiber Reinforced Plastic NDI Nondestructive Inspection CIPR Critical Integrated Product Review ODA Organization Designation Authorization DPA Digital Preassemb…
A nano-precusor which can, in-situ, produce nano-SiO 2 under particular triggering condition was introduced into leather to improve the hydrothermal stability. In order to elucidate the reaction of nano-SiO 2 with proteinand how it influences the properties of the protein, collagen was used as a model in a detailed in…
Abstract Summary: The risk parameters of the high‐solids‐content emulsion copolymerization of vinyl acetate/butyl acrylate/acrylic acid (78.5/18.5/3 wt.‐%) were studied. The effect of the polymer/monomer ratio, the total solids content, the initiator/monomer ratio, the non‐swollen polymer particle size, and the proces…
Abstract Synthesis and Crystal Structures of PrSe 2 and NdSe 2 Crystals of PrSe 2 and NdSe 2 can be made by chemical transport reactions starting from pre‐annealed powders (800 – 600 °C, 2 weeks, I 2 as transport agent). Both compounds adopt the CeSe 2 ‐type structure. They crystallize in the monoclinic space group P…
Abstract The catena –hexaphosphate Ca 4 P 6 O 19 (Trömelite) was obtained by the reaction of calcium oxide with H 3 PO 3 in a tube furnace at a temperature of 900 °C and crystallizes triclinic (space group $P{\bar 1}$ , Z = 2, a = 685.70(9) pm, b = 915.47(12) pm, c = 1282.25(17) pm, α = 109.602(10)°, β = 99.778(10)°,…
Quasiperiodic ferroelectric PbZr0.4Ti0.6O3 multilayers have been fabricated using the sol–gel technique based on one single precursor. The building block of the multilayer is the distinct PbZr0.4Ti0.6O3/porous-PbZr0.4Ti0.6O3 bilayer formed in a single spin-casting/annealing step and the formation of the bilayer is gov…
Enhanced surface diffusion at the growth temperature of single-walled carbon nanotubes (SWNTs) can cause coarsening of metal catalysts. By balancing the nominal thickness and surface diffusion length of metals, metal nanoparticles of desirable size are expected to form spontaneously under the SWNTs growth conditions.…
Abstract On the Synthesis of Binary and Ternary Carbides in a Modified Domestic Microwave Oven By modifying a domestic microwave oven binary and ternary carbides were synthesized from the elements in an argon atmosphere. We succeded in preparing CaC 2 , Ca 4 Ni 3 C 5 and MgM 3 C x (M = Ni, Co) within several minutes.…
P AI is used as a specialty coating onto copper and aluminum conductors due to its high thermal, chemical and electrical resistance along with good mechanical strength. Its outstanding adhesion to different materials, including metals and Teflon, makes it useful for coatings. PAl has less interfacial residual stresses…
The effect of force field type on the predicted elastic properties of a polyimide is examined using a multiscale modeling technique. Molecular Dynamics simulations are used to predict the atomic structure and elastic properties of the polymer by subjecting a representative volume element of the material to bulk and sh…
Abstract Monovalent ionic additives, Na + , K + and NH impact on the morphology and agglomeration of CaCO 3 crystals. As increasing the additive concentration, the regular shaped crystals such as rhombohedron and spindle are changed to irregular one due to the inclusion of Na + and K + into the crystal structure. The…
Porous silicon with surface Si–Ag bonds was prepared by a two-step method combining chemical etching and electrochemical anodization. The microstructure was analyzed by scanning electron microscopy, and the bond structure was evaluated by energy dispersion spectroscopy and Fourier transform infrared spectroscopy. The…
Abstract Summary: A new analysis tool is presented that uses the governing kinetic scheme to predict properties of low‐density polyethylene (LDPE) such as the detailed shape of the molecular weight distribution (MWD). A model that captures mixing details of autoclave reactor operation is used to provide a new criterio…
Sechs FeIII-Zentren eingebaut: Das Wolframophosphatanion [H2P2W12O48]12− bildet mit FeCl3 {P2W12Fe6}-Einheiten, die in [H4P2W12Fe9O56(OAc)7]6− und [H56P8W48Fe28O248]28− charakterisiert wurden. Letzteres ist ein supramolekulares Polyoxowolframat, in dem jede der vier {P2W12Fe6}-Einheiten durch drei Fe-O-Fe-Brücken verk…
Abstract Pure and impurity (strontium) added calcium tartrate tetrahydrate single crystals were grown by the gel method. The FT‐IR spectra of these crystals were recorded in the wavenumber range 400–4000 cm –1 . The thermograms of the grown crystals were recorded in the temperature range 50–900 °C. FT‐IR spectra revea…
Abstract GaSe thin films are obtained by evaporating GaSe crystals onto ultrasonically cleaned glass substrates kept at room temperature under a pressure of ∼10 –5 Torr. The X‐ray analysis revealed that these films are of amorphous nature. The reflectance and transmittance of the films are measured in the incident pho…
The charge carrier concentratioin is an important parameter in the search for intermetallic clathrates adequate for thermoelectric applications. This work reveals the influence of the exact composition of ${\mathrm{Eu}}_{8}{\mathrm{Ga}}_{16\ensuremath{-}x}{\mathrm{Ge}}_{30+x}$ on the charge carrier concentration. The…
Abstract Poly( p ‐dioxanone) (PPDO)/montmorillonite nanocomposites were prepared through the in situ ring‐opening polymerization of p ‐dioxanone (PDO) and three types of montmorillonites (natural sodium montmorillonite, montmorillonite modified by octadecyltrimethyl ammonium chloride, and montmorillonite modified by h…
Abstract At present, the high‐energy milling method becomes widely used for the preparation of nanocrystalline materials due to its relative simplicity and availability. In this research report, selected examples are presented of the preparation of nanoscale spinel ferrites by mechanical activation and mechanosynthesi…
The collective dynamics of liquid gallium close to the melting point has been studied using inelastic x-ray scattering to probe length scales smaller than the size of the first coordination shell. Although the structural properties of this partially covalent liquid strongly deviate from a simple hard-sphere model, the…