Materials Literature
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Current fluctuations during general corrosion of stainless steel in sulfuric acid (H2SO4) were studied experimentally and analyzed using a simple electrochemical model. Stochastic behavior of the metal-electrolyte interface in the model was based upon the assumption that elementary fluctuation sources were related to…
Reaction couples of either ((Bi,Pb)-2212) single crystals with `' powder or (Bi-2212) single crystals with `' powder were used to study the formation reaction of (Bi,Pb)-2223. The samples were annealed between and , in air, for 65 h. Microstructural observations were made of the different geometrical interfaces. No (B…
The field-dependencies of the ME-effect and longitudinal magnetostriction of single crystals GaxFe2-xO3 in magnetic fields up to 200 kOe have been studied. For analysis of the experimental data the representation about toroidal spin ordering has been used, which is in qualitative conformity with the experimental data.
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTChain Conformation of Cellulose in a Coordinating SolventO. Hanemann and M. BallauffView Author Information Polymer-Institut, Universität Karlsruhe, Kaiserstrasse 12, 76128 Karlsruhe, Germany Cite this: Macromolecules 1997, 30, 24,…
The morphology of ternary polypropylene (PP)-polyamine-6 (PA-6) glass (either beads [GB] or fibers [GF]) blends was investigated as a specific example of a multicomponent system. The implications of blend structure and filler partitioning on several properties, such as viscosity and crystallization behavior, are discu…
A new semi-empirical model for predicting the ferrite content of stainless steel welds has been developed. This model predicts the ferrite number of stainless steel welds as a function of composition. The model is based on an equation representing the free energy change between ferrite and austenite. This model has be…
Abstract Accessory green ferric clay occurs in fluvial litharenites of the Early Triassic Rewan Group. Although resembling glauconitic minerals in thin-section, electron microprobe analyses indicate that the green ferric clay is mainly ferric illite. The ferric illite may have formed in a small hypersaline lake or wel…
The electron beam assisted chemical etching (EBACE) method with hydrogen gas is applicable to direct fine patterning of single-crystal diamond substrates. A scanning electron microscope (SEM) combined with a gas introduction system was used for EBACE. Hole, line and rectangular patterns were successfully fabricated. I…
Mullite (3Al 2 O 3 ·2SiO 2 ) coatings on SiC substrates and SiC precoated carbon/carbon composite (C/C‐Si‐SiC) substrates were produced by pulsed laser deposition (PLD) using pressed mullite powder targets. The layers can be characterized efficiently by IR reflection spectroscopy in the spectral range between 650 and…
Experimental heat capacity, dielectric, and shear spectroscopy data are reported on the αβ splitting region of poly( n -octyl methacrylate). New facets of a major difference between the high-temperature a relaxation at frequencies above the αβ splitting region and the ordinary α relaxation below are obtained: An α coo…
An observation of diamond nanocrystal nucleation in the course of hydrogenated amorphous carbon film growth under ion sputtering of graphite is reported. Transmission electron microscopy (TEM) (100 keV), selected-area electron diffraction and optical absorption (1–6 eV) studies of the prepared hydrogenated amorphous c…
In this work, the authors derive the weighting functions of the Preisach model of hysteresis (used for real-time control applications) corresponding to the uniaxial isothermal psuedoelastic response of an SMA polycrystal. A uniform distribution of single crystals is taken to constitute the polycrystal. The assumed pha…
Abstract Biodegradation of plasticized cellulose acetate (PCA) was established with a standard municipal solid waste (ED 73). The relative percent weight loss of the specimen was measured, and the aerobic biodegradation was evaluated in a controlled aerobic composting system that was designed to capture CO 2 produced…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTCarbon−Carbon Bond Formation with Allylmagnesium ChlorideDouglass F. Taber, John H. Green, and John M. GeremiaView Author Information Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716 Cite this: J. Org. Chem. 1997, 62, 26, 9342–9344Publica…
An analysis was carried out of the mechanism underlying magnetic interlayer interaction in film structures. The investigation was based on the assumption that interlayer bonding affects film hysteresis. This was based on experimental data on the coercive force, the domain structure parameters, and the microstructure o…
The crystalline network structure of conducting (ET)2I3 reticulate doped polycarbonate (RDP) films were analysed by X-ray as well as ESR, transport properties and superconducting characteristics of the films were investigated. It was found that under certain conditions of the second step of the RDP-film preparation, a…
The existence of the ternary intermetallic {phi} phase in the Mg-Al-Zn system was first established by Clark. However its crystal structure remained undetermined until now. In this paper, a method using transmission electron microscopy, initially developed by Steeds and Vincent, has been applied to determine the unit…
In this short article, we draw attention to the pioneering studies of Daniel Vorlander, who lived from 1867 to 1941 and worked in Halle, Germany between 1890 and 1935. The number and range of compounds synthesized under his guidance are truly vast, but much of his work is hidden away in Doctoral theses. All of these d…
Polymer dispersed liquid crystals (PDLCs) are materials composed of liquid crystal microdroplets dispersed in a polymer matrix. Their electro-optic properties make them useful for applications as large-area electrically switchable architectural windows (smart windows). For these applications, the key parameters of per…
The metallocene-catalyzed syndiospecific synthesis of the new homopolymer of p - n -butylstyrene and its random copolymers with styrene is reported. The crystalline morphology of the resulting polymers is studied by means of atomic force microscopy (AFM), wide-angle X-ray scattering (WAXS), differential scanning calor…