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。
The purpose of this paper is to investigate the preparation and properties of SrBi 2 Ta 2 O 9 ceramics as capacitors and/or piezoelectric materials. Ordinarily fired (OF) samples were prepared by a conventional ceramic technique. Grain-oriented (GO) samples were prepared by the hot-forging method. High-density OF samp…
An analysis is given of the contribution of various crystal imperfections to the rocking widths of reflections and the divergence of the diffracted beams. The crystal imperfections are the angular spread of the mosaic blocks in the crystal, the size of the mosaic blocks and the variation in cell dimensions between blo…
Cellulases and pectinases are used to treat raw cotton fibers and unscoured cotton fabrics. The structural changes in the surfaces of cotton caused by the enzymatic treat ments and resulting properties are the main focus of this study. Both staining tests and microscopy observations confirm that the cuticle is removed…
Band bending formation on thin nanocrystalline diamond films and field electron emission after post-growth treatments was investigated. It was found that treatment of the diamond surface with hydrogen plasma substantially decreases the density of point defects, forms the downward band bending and enhances the field el…
Raw Materials. Castable Refractories. Pumpable Castables. Plastic Refractories. Ramming Mixes. Gunning Mixes. Mortars. Coatings. Dry Vibratables. Wear Mechanisms. Manufacturing. Application Designs. Evaluation and Tests. Lining. Index.
Molybdenum thin films were deposited onto both soda lime glass and Al2O3 film by an alternate supply of MoCl5 and Zn. Zinc was used as a reducing agent. The film growth was performed over a temperature range of 400–500 °C in order to study the temperature effect on the growth. In addition to the growth temperature, th…
A barrier for the absorption of hydrogen molecules generated by a nonmetallic film on a metal surface may result in superpermeation of suprathermal hydrogen particles. Virtually all the sticking or implanted particles may permeate through the metallic membrane, with a permeation flux depending neither on the metal tem…
The structure of the glassy fast-ion conductor $g\ensuremath{-}{\mathrm{AgPS}}_{3}$ is studied by using the method of isotopic substitution in neutron diffraction. The diffraction pattern measured in a single experiment is separated into its contributions from the partial structure factor ${S}_{\mathrm{AgAg}}(k),$ and…
We present experimental results on surface relief gratings in GaAs and InP with high reflectivity (>85%) and polarization selectivity to normal incidence from the semiconductor side. The potential for polarization stabilization with a reduced mirror complexity for long-wavelength VCSELs is discussed.
Corrosion phenomena of alloy 625 (UNS N06625) were investigated in oxygenated aqueous solutions containing sulfuric acid (H2SO4), sodium hydrogen sulfate (NaHSO4), or sodium sulfate (Na2SO4) and in deaerated H2SO4 solution. Tests were conducted at temperatures and pressures up to 500°C and 38 MPa, respectively. Corros…
Theoretical coulovoltammograms associated with the evolution of anodic charges when a polypyrrole film, which was previously compacted at a strong negative potential in a 0.1 M LiClO 4 propylene carbonate solution, was submitted to anodic potential sweeps were compared with experimental responses. The electrochemicall…
Abstract This work demonstrates the validity of approximating cathodoluminescence generation throughout the electron interaction volume by the total electron energy loss profile. The energy loss profiles in multilayer specimens were accurately calculated using the Monte Carlo simulation CASINO. Resolution of cathodolu…
Opportunities and challenges for the use of starch in the production, coating, and conversion of paper are reviewed. In the U.S. paper industry, starch has to compete with many synthetic materials that often outperform starch in molecular design, charge adjustment, viscosity characteristics, and binding power. Commodi…
Electrodeposition of Copper and Copper‐Aluminum Alloys from a Room‐Temperature Chloroaluminate Molten Salt, Tierney, Brian J., Pitner, William R., Mitchell, John A., Hussey, Charles L., Stafford, Gery R.
Polar domains of the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 were observed by transmission electron microscopy in dark-field images of the fundamental reflection. Macroscopic domain structure of the rhombohedral phase appears below the transition temperature of about 220 K, though microscopic polar domains still exist…
The 1/3 (1010) partial dislocation plays a crucial role in the plastic deformation of sapphire (α-Al2O3). During deformation at high temperatures, basal slip (1/3(1120) (0001)) has the lowest critical resolved shear stress; 1/3 (1120) perfect dislocations undergo dissociation (which is probably restricted to the dislo…
Tetragonal zirconia (t‐ZrO 2 ) solid solutions were prepared with additions of up to 1.5 mol% of niobium oxide (Nb 2 O 5 ) into 3‐mol%‐yttria‐stabilized t‐ZrO 2 (3Y‐TZP). The influence of pentavalent cation doping on fracture toughness, ionic conductivity, and the tetragonal‐to‐monoclinic phase transformation in the t…
Ordered structures in samples of Bisphenol A polycarbonate (BPAPC) prepared by varying thermal and solvent conditions were investigated by infrared and Raman spectroscopy, wide-angle X-ray scattering (WAXS), and differential scanning calorimetry (DSC). Based on the spectroscopic analysis and ab initio quantum mechanic…
We report the controlled adsorption of individual multi- and single-walled carbon nanotubes from purified aqueous dispersions onto chemically modified silicon oxide surfaces as well as on predefined electrode patterns (100 nm electrode separation). Detailed structural investigations were performed using scanning force…
ABSTRACT Depectinized control (CTJ) and ascorbic acid treated (AAJ) apple juices were filtered through microfiltration (MF, 0.2 m) and ultrafiltration (UF, 0.02 m) ceramic tubular membranes. Under optimal conditions (8 m/s, 414 kPa and 50°C), the UF membrane resulted in higher steady state flux and less fouling than t…