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Effects of Doped Elements on the Cellular Precipitation in Cu–10Ni–8Sn Alloy
The effects of additions of Ti, Si, Cr, Al, Co, Fe, In and Mn on the cellular precipitation in a Cu-10 mass%Ni-8 mass%Sn alloy were investigated by the quantitative metallographic method. The additions of these elements suppressed the nucleation and growth of the grain boundary cell. The addition of Ti, Si, Al and Cr…
Charge and Ion Transport in Poly(pyrrole copper phthalocyanine tetrasulfonate) during Redox Switching
The redox switching properties of electrochemically synthesized poly(pyrrole copper phthalocyanine‐3,4'4'',4‴‐tetrasulfonate) (PP‐CuPTS) have been investigated in aqueous electrolytes utilizing the electrochemical quartz crystal microbalance (EQCM) technique. Ion transport during redox switching is found to be cation…
Partially Immersed Cylindrical Horizontally Revolving Electrodes for the Production of Conducting Polymers
Partially immersed cylindrical horizontally revolving electrodes (PICHRE) are of immense use in the production of conducting polymers. The method is amenable for both powder or film production. Cyclic voltammetry of pyrrole on stainless steel‐PICHRE is reported along with conductivity, shielding efficiency, and mechan…
Chemical structure and oxygen dynamics in Ba2In2O5
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical structure and oxygen dynamics in Ba2In2O5Stuart B. Adler, Jeffrey A. Reimer, Jay Baltisberger, and Ulrike WernerCite this: J. Am. Chem. Soc. 1994, 116, 2, 675–681Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue…
Electrochemical Synthesis of Composite Films of Manganese Dioxide and Polypyrrole and Their Properties as an Active Material in Lithium Secondary Batteries
Composite films of polypyrrole and or lithiated particles have been synthesized for use as cathode‐active materials of rechargeable lithium batteries. The composite films were prepared by electrolysis of pyrrole dissolved in propylene carbonate solution in the presence, of suspended particles. The maximum amount of th…
Analysis of a Circular Braiding Process for Complex Shapes
Circular braiders can be adapted to make complex shapes by overbraiding a contoured mandrel and adjusting the process parameters, usually by trial and error. To advance this technology, we developed a detailed model of the braiding process. The model relates the shape of the braid to the machine speeds (which can be p…
Thermal Spray Coatings
Abstract This article introduces thermal spray coatings and describes the various types of coating processes and coating devices, including the flame spray, electric-arc spray, plasma spray, transferred plasma arc, high-velocity oxyfuel, and detonation gun. It provides information on the surface preparation methods an…
Growth laws for phase ordering
We determine the characteristic length scale, L(t), in phase-ordering kinetics for both scalar and vector fields, with either shortor l L(t) consistently by comparing the global rate of energy change to the energy dissipation from the local evolution of the order parameter. We derive growth laws for O(n) and other mod…
Spectrum for the allen-chan, chan-hillard, and phase-field equations for generic interfaces
(1994). Spectrum for the allen-chan, chan-hillard, and phase-field equations for generic interfaces. Communications in Partial Differential Equations: Vol. 19, No. 7-8, pp. 1371-1395.
Electric Fatigue in Lead Zirconate Titanate Ceramics
Electric fatigue is a major obstacle for some potential applications of ferroelectric materials based on reversals of spontaneous polarization, such as memory devices and high strain actuators. Our studies of finegrained hotpressed lead zirconate titanate with lanthanum dopant (PLZT 7/68/32) show that fast fatigue is…
Octakis(alkylthio)-substituted phthalocyanines and their interactions with silver( I ) and palladium( II ) ions
Metal-free phthalocyanines and metal phthalocyaninates (M = Ni, Cu, Co or Zn) carrying eight alkylthio-groups on peripheral positions have been synthesised from 4,5-bis(alkylthio)phthalonitrile and 1,8-diazabicyclo[5.4.0]undec-7-ene (dbu) or the corresponding anhydrous metal salt [NiCl2, CuCl, CoCl2 or Zn(O2CMe)2]. Th…
Fundamentals of Polymer Science: An Introductory Text
Now in its second edition, this widely used text provides a unique presentation of today's polymer science. It is both comprehensive and readable. The authors are leading educators in this field with extensive background in industrial and academic polymer research. The text starts with a description of the types of mi…
Pharmacokinetics, Biodistribution and Therapeutic Efficacy of Doxorubicin Encapsulated in Stealth® Liposomes (Doxil®)
Doxil® (Stealth® liposomal doxorubicin HCl) Injection is doxorubicin HCl incorporated into long circulating liposomes that contain surface-grafted polyoxyethylene chains. These surface-grafted polymer chains reduce the interaction of the liposomes with the mononuclear phagocytic system, accounting for the long circula…
Performance of the 1 kW thermoelectric generator for diesel engines
Hi‐Z Technology, Inc. (Hi‐Z) has been developing a 1 kW thermoelectric generator for class eight Diesel truck engines under U.S. Department of Energy and California Energy Commission funding since 1992. The purpose of this generator is to replace the currently used shaft‐driven alternator by converting part of the was…
Process and Film Characterization of Chemical‐Bath‐Deposited ZnS Thin Films
Chemical‐bath deposition of ZnS thin films from NH 3 / NH 2 ‐ NH 2 / SC ( NH 2 ) 2 / ZnSO 4 solutions has been studied. The effect of various process parameters on the growth and the film quality is presented. A first approach to a mechanistic interpretation of the chemical process is reported. The structural, optical…
A Numerical Approach to Three-Dimensional Dendritic Solidification
We consider pattern formation during the supercooling solidification of a pure material, using a phase field model. The model gives rise to a rich variety of three-dimensional patterns, including very realistic dendritic crystal forms. We show how the strength of anisotropy has a crucial influence on the shape of crys…
Characterization of hydrogen bonding in cellulose-synthetic polymer blend systems with regioselectively substituted methylcellulose
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of hydrogen bonding in cellulose-synthetic polymer blend systems with regioselectively substituted methylcelluloseTetsuo Kondo, Chie Sawatari, R. St. J. Manley, and Derek G. GrayCite this: Macromolecules 1994, 27, 1, 210–215Publication Date (Print):January 1…
Chemical changes at the surface of RTV silicone rubber coatings on insulators during dry-band arcing
Under wet and contaminated conditions dry band arcing occurs on the surface of HV outdoor insulators coated with room temperature vulcanizing (RTV) silicone rubber. The thermal impact of the arcing on the surface of the RTV causes chemical changes. The gradual loss of hydrophobicity due to dry band arcing is of consid…