Yo Sakaki、S. Imagi1981-07-01IEEE Transactions on Magnetics
A new approach is presented for understanding the frequency and flux density dependence of eddy current losses in polycrystalline and amorphous soft magnetic materials by introducing an experimentally derived parameter which is thought to be proportional to the number of active domain walls. The relationship among edd…
Magnetic properties of thin filmsMagnetic Properties and ApplicationsNon-Destructive Testing Techniques
K. Hiltrop、H. Stegemeyer1981-07-01Berichte der Bunsengesellschaft für physikalische Chemie
Abstract The orientation of nematic liquid crystals (LC) by monolayers of suitable amphiphilic compounds on solid substrates has been studied by systematic experiments using polarizing microscopy, magnetic Freedericksz‐transition, and contact angle measurements. Orientation is influenced mainly by the following parame…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsSurfactants and Colloidal Systems
William G. Characklis、M. J. NEVIMONS、B.F. Picologlou1981-07-01Heat Transfer Engineering
In heat exchange equipment, fouling biofilm formation causes a significant energy loss by increasing heat transfer resistance. This paper describes experiments which quantify the influence of fouling biofilms on heat transfer resistance under controlled laboratory conditions. Experimental results compare well with a r…
Surface Modification and SuperhydrophobicityFluid Dynamics and MixingCalcium Carbonate Crystallization and Inhibition
N. Shinkai、R. C. Bradt、Guy E. Rindone1981-07-01Journal of the American Ceramic Society
The fracture toughnesses of fused SiO 2 and float glass were measured at high temperatures. In both glasses, low‐temperature regions of elastic fracture were identified and correlated with the elastic moduli and their temperature dependence. A viscous flow contribution to the fracture toughness was identified in the f…
Advanced ceramic materials synthesisGlass properties and applicationsStructural Analysis of Composite Materials
C. Greskovich、S. Prochazka1981-07-01Journal of the American Ceramic Society
Advanced sintering techniques for consolidation of Si 3 N 4 powders in the presence of an oxygen‐rich liquid phase(s) require high temperatures and usually high nitrogen pressures. A stability diagram is constructed for Si 3 N 4 as a function of the partial pressures of nitrogen (P N2 ) and silicon (P Si ). High P N2…
Advanced ceramic materials synthesisMetal and Thin Film MechanicsCopper Interconnects and Reliability
Elmar W. Lang、H.‐D. Lüdemann1981-07-01Berichte der Bunsengesellschaft für physikalische Chemie
Abstract The spin‐lattice relaxation times T 1 of the oxygen‐17 isotope in light and heavy water have been measured at 13.56 MHz in the temperature range 457 K to 238 K and up to pressures of 250 MPa. Below 300 K all isotherms exhibit maxima of T 1 which become most pronounced at the lowest temperatures measured. A ma…
Material Dynamics and PropertiesGlass properties and applicationsPhotochemistry and Electron Transfer Studies
Jeremy K. Burdett1981-07-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUse of the Jahn-Teller theorem in inorganic chemistryJeremy K. BurdettCite this: Inorg. Chem. 1981, 20, 7, 1959–1962Publication Date (Print):July 1, 1981Publication History Published online1 May 2002Published inissue 1 July 1981https://pubs.acs.org/doi/10.1021/ic50221a003htt…
Crystal Structures and PropertiesAdvanced Physical and Chemical Molecular InteractionsChemical Thermodynamics and Molecular Structure
W. H. Knoth、R. L. Harlow1981-07-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDerivatives of heteropolyanions. 3. O-alkylation of Mo12PO403- and W12PO403-W. H. Knoth and R. L. HarlowCite this: J. Am. Chem. Soc. 1981, 103, 14, 4265–4266Publication Date (Print):July 1, 1981Publication History Published online1 May 2002Published inissue 1 July 1981https:…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Reactions
Richard E. Robertson、E. S. Hsiue、E. N. Sickafus 等 4 位作者1981-07-01Polymer Composites
Abstract The goal of this series of reports is to develop rapid computational procedures for determining the rearrangement of fibers that occurs during the molding of continuous fiber composite components for flat layups. This report considers the shaping of a cloth into a hemisphere. /the numerical procedure develope…
Metal Forming Simulation TechniquesEpoxy Resin Curing ProcessesTextile materials and evaluations
Priyanka Nayar、A. Catalano1981-07-01Applied Physics Letters
The photovoltaic properties of p-Zn3P2/n-ZnO heterojunction solar cells prepared by sputter deposition of ZnO on Zn3P2 substrates are reported. An active-area power conversion efficiency of ∼2% has been obtained. The experimental results are discussed on the basis of an interface recombination model. The interface pla…
ZnO doping and propertiesChalcogenide Semiconductor Thin FilmsThin-Film Transistor Technologies
Stanley A. Brown、Katharine Merritt1981-07-01Journal of Biomedical Materials Research
Fretting corrosion of stainless-steel round hole plates and spherical head screws was studied using a simulator that produced a rocking motion of the heads in the plate holes. Experiments were run for 7 days, with the simulator producing 1 oscillation/s for 16 h/day. Fretting corrosion was studied in 0.9% NaCl and in…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
J. Rivas、J.M. Zamarro、E. Martín 等 4 位作者1981-07-01IEEE Transactions on Magnetics
A rational function approximation for magnetization curves and hysteresis loops is presented. This approximation leads to Rayleigh relations and the law of approach to saturation as limit forms. Furthermore, the magnetic permeability and the magnetic energy density is computed. Finally, this analysis is applied to com…
Magnetic Properties and ApplicationsNon-Destructive Testing TechniquesInduction Heating and Inverter Technology
T. Huizinga、R. Prins1981-07-01The Journal of Physical Chemistry
Reduction of Pt/Ti02 at 573 K leads to the formation of a Ti3+ ESR signal, which disappears after a subsequent evacuation at 573 K. Readmission of hydrogen at room temperature makes the signal reappear.Such a reversibility is not observed when reduction takes place at 773 K.These observations are explained by a spillo…
Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions
Sudhir S. Chandratreya、Richard M. Fulrath、Joseph A. Pask1981-07-01Journal of the American Ceramic Society
The solid‐state reactions occurring in the system PbO‐TiO 2 ‐ZrO 2 were investigated using constant heating rates up to 1000°C. DTA, dilatometric length changes, and XRD analysis were used for characterization. PbO and TiO 2 reacted exothermally to form the product PbTiO 3 with a large volume expansion between 450° an…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisThermal and Kinetic Analysis
Eun‐Seok Choe、Sang Nim Kim1981-07-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, spinning, and fiber mechanical properties of poly(p-phenylenebenzobisoxazole)E. Won Choe and Sang Nim KimCite this: Macromolecules 1981, 14, 4, 920–924Publication Date (Print):July 1, 1981Publication History Published online1 May 2002Published inissue 1 July 1981h…
Epoxy Resin Curing ProcessesFiber-reinforced polymer compositesSynthesis and properties of polymers
G. Davies1981-07-01Reports on Progress in Physics
Reviews the vibronic properties of point defects (i.e. impurities and radiation-induced defects) in diamond. Cases discussed are: defects where the totally symmetric electron-lattice interaction dominates; cases of dynamic Jahn-Teller distortions; vibronic interactions between nearly degenerate states and a statically…
High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchElectronic and Structural Properties of Oxides
A.G. Evans、K. T. Faber1981-07-01Journal of the American Ceramic Society
An approximate analysis is presented of the toughening induced by the incorporation of second‐phase particles subject to microcrack‐ing. It is demonstrated that the toughening becomes appreciable for a narrow size distribution of particles of appropriate size. The magnitude of the toughening is determined by the misma…
Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesAdvanced materials and composites
James M. Burkstrand1981-07-01Journal of Applied Physics
The interfaces formed by evaporating copper, nickel, and chromium layers on polystyrene, polyvinyl alcohol, polyethylene oxide, polyvinyl methyl ether, polyvinyl acetate, and polymethyl methacrylate have been studied with x-ray photoemission spectroscopy (XPS). The adhesion strengths of the metal films to the polymers…
Corrosion Behavior and InhibitionAdvancements in Photolithography TechniquesElectron and X-Ray Spectroscopy Techniques
Donald L. Helseth、Arthur Veis1981-07-01Journal of Biological Chemistry
The thermally induced in vitro self-assembly of collagen molecules to form active fibrils illustrates that collagen molecules themselves contain all of the structural information necessary for assembly. The molecule contains three structural domains, the NH2 and carboxyl-terminal extra helical regions (the telopeptide…
Connective tissue disorders researchSilk-based biomaterials and applicationsCollagen: Extraction and Characterization
R.H. Packwood、J. D. Brown1981-07-01X-Ray Spectrometry
Abstract It is shown that the depth distribution of X‐ray production in the electron microprobe can be accurately described by a Gaussian modified at the sample surface by a transient. Assuming that the Gaussian is a consequence of the electrons undergoing a random walk in the sample and that the transient corresponds…
Mass Spectrometry Techniques and ApplicationsX-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy Techniques