Materials Literature
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A wide bandwidth, dynamic model for the magnetization of the core material used in pulse transformers must be able to perform accurate circuit simulations involving such transformers. The authors have obtained such a model by combining the approaches used in the static hysteresis models of D.C. Jiles and D.L. Atherton…
Phase relations in the Fe-rich corner of the Sm-Fe-Ti system were investigated by means of microstructural examinations, EDX, and thermal and thermomagnetic analyses. Between 1000 degrees C and 800 degrees C, equilibria of Sm(Fe, Ti)/sub 12/ with the phases alpha -Fe, Fe/sub 2/Ti, and Sm(Fe, Ti)/sub 9/ were found, whi…
Abstract A new analytical expression of the surface ionization Φ(0) is derived in terms of atomic number and overvoltage. This expression is obtained by means of an analytical description of the energy distribution of backscattered electrons. The Φ(0) data for Pt, W, Sb, InSb, Ni, Co and Mg have been measured using th…
Raman scattering measurements on cubic boron nitride up to 1600 K are reported. The results indicate that at 1600 K the interatomic force constant is only ∼10% weaker than at room temperature and that cubic BN is therefore a good candidate for applications where high-temperature mechanical strength is required. Howeve…
The corrosion resistance of 316L cold worked stainless steel depends upon its thin protective oxide layer; and if this is partially broken down, corrosion resistance depends upon its tendency for repassivation. Since the intended function of stainless-steel implants is to sustain musculoskeletal forces, research towar…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPicosecond laser-induced fluorescence polarization studies of mitoxantrone and tetrakis porphine/DNA complexesYizhong Shen, P. Myslinski, Teresa Treszczanowicz, Yixian Liu, and J. A. KoningsteinCite this: J. Phys. Chem. 1992, 96, 19, 7782–7787Publication Date (Print):Septemb…
Abstract Chemical and mineralogical analyses of fossil caliche profiles developed on top of Lower Pleistocene alluvial formations in the East-central sector of the Ebro basin indicate that they have high content of carbonate (average 84%) and high Ca/Mg ratios (average 136). The clay mineral assemblages vary slightly…
Abstract The self‐diffusion of benzene, toluene, and ethylbenzene in polystyrene have been analyzed using the Vrentas/Duda free‐volume diffusion model. Diffusion coefficient predictions suggest an exponential concentration dependence of the activation energy required to overcome attractive forces, E . Without the use…
The dielectric properties of SrTiO 3 epitaxial film were studied using film grown on oxide superconductor YBa 2 Cu 3 O y . They were, to a certain extent, similar to those of the single-crystal bulk in terms of both temperature and electric field dependence, though the value of the dielectric constant was low, particu…
This paper introduces and gives an overview of the starting material oriented analysis package in lhasa.
Ferroelectric PbTiO 3 thin films have been formed on based electrodes of Pt or oxide superconductor ((La, Sr) 2 CuO 4 ) by an ArF excimer laser ablation technique. A second laser irradiation at the substrate surface is quite effective in the crystallization of the films at low substrate temperature below 400°C. The su…
Cross‐linking of 1, formation of a SiC network, and reduction of the encapsulated TiO 2 particles are the three steps in the reaction of poly[(dimethylsilylene)diacetylene] ( 1 ) and TiO 2 which produces SiCTiC ceramics [Eq. (a)]. The reduction of the metal oxide in this case is possible at much lower temperatures th…
In this paper, the initial development of microdamage in material subjected to impulsive loading was investigated experimentally and analytically with controllable short-load duration. Based on a general solution to the statistical evolution of a one-dimensional system of ideal microcracks, a prerequisite to experimen…
Abstract Sulfate reduction in the sea-water end member of mixing-zone fluids changes the fluid-saturation indices for carbonate minerals. Mixing-zone fluids were modeled quantitatively using Atlantic sea water and a fresh-water end member from Barbados for sulfate reduction in the presence of goethite, in the absence…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT[CF3Au(C.tplbond.NMe)] as a precursor for CVD of goldNeil H. Dryden, Joseph G. Shapter, Leighton L. Coatsworth, Peter R. Norton, and Richard J. PuddephattCite this: Chem. Mater. 1992, 4, 5, 979–981Publication Date (Print):September 1, 1992Publication History Published online…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCyclopolymerization of divinyl ethers. Synthesis and the cation-binding property of poly(crown ethers)Toyoji Kakuchi, Osamu Haba, and Kazuaki YokotaCite this: Macromolecules 1992, 25, 19, 4854–4858Publication Date (Print):September 1, 1992Publication History Published online…
Abstract Dynamic mechanical and gas transport properties for homogeneous homopolymer blends and random copolymers of bisphenol‐A and tetramethyl bisphenol‐A polycarbonates (PC‐TMPC) were determined. The gas transport measurements were performed at 35°C for the gases He, H 2 , O 2 , Ar, N 2 , CH 4 , and CO 2 . The resu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGeometrical and electronic structures of a benzimidazobenzophenanthroline-type ladder polymer (BBL)Sung Y. Hong, Miklos Kertesz, Yong S. Lee, and Oh Kil KimCite this: Macromolecules 1992, 25, 20, 5424–5429Publication Date (Print):September 1, 1992Publication History Publishe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of poly(2,5-dialkoxyphenylene)Mitsuru Ueda, Tetsuya Abe, and Hiroshi AwanoCite this: Macromolecules 1992, 25, 20, 5125–5130Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Published inissue 1 September 1992https://pubs.acs.org…
Commercial β‐SiAlON ceramics were joined using mixed Si 3 N 4 , Y 2 O 3 , Al 2 O 3 , and SiO 2 powders. At a joining temperature of 1600°C and a hold time in excess of 10 min, the adhesive was converted to an approximate 60:40 vol% composite of β‐SiAlON–glass‐ceramic. The grain size of the acicular β‐SiAlON grains pre…