Materials Literature
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Abstract This review summarizes the different ideas to breakdown of passivity and localized corrosion. On the basis of experimental results a critical discussion of the main mechanisms is presented. The subdivision into different stages of growth of corrosion pits tries to reduce the controversial opinions and to avoi…
de Gennes gave a three-parameter representation of strain energy in a cholesteric liquid crystal that is second order on the $Q$ tensor, and hence in order parameter. He discarded a term involving an elastic constant ${K}_{24}$ which is relevant at surfaces and disclinations. The splay and bend elastic constants ${K}_…
In situ laser Raman spectra of anodic corrosion films formed on Ni and Co in have been obtained for the first time and the composition of the surface films deduced. The Raman spectrum of the film found on Ni at about 0.6V vs. corresponds closely to that of hydrated . The anodically formed film on Co at about 0.45V app…
Abstract Effects of structural relaxation and the glass‐transition process are clearly manifested in the electrical behavior of glassy‐chalcogenide films. Analysis of the transport and trapping of photoinjected carriers and of the thermal generation of free carriers in the bulk reveal that in chalcogenides each of the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon-13 NMR analysis of ethylene-propylene rubbersH. N. ChengCite this: Macromolecules 1984, 17, 10, 1950–1955Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1 October 1984https://doi.org/10.1021/ma00140a012RIGHTS & P…
The work described in this paper was carried out some years ago. It was published as part of a U.S. Air Force report [1] and presented as a Conference Paper [2] at this Conference. Since the latter appeared only as an extended abstract and the former did not receive wide distribution it seemed appropriate to present i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemistry of phosphate esters: an efficient method for the generation of electrophilesRichard S. Givens and Bogdan MatuszewskiCite this: J. Am. Chem. Soc. 1984, 106, 22, 6860–6861Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Publi…
The physical processes occurring during partial discharges in voids in dielectrics have been studied utilizing fast oscilloscopic techniques to observe the buildup and decay of current as a function of time for single discharges. A key parameter is the overvoltage at breakdown, determined for time-dependent voltages b…
Thin films of the phase transition material vanadium dioxide (VO2) were deposited by thermal oxidation of e-beam evaporated vanadium on a variety of bulk materials. Substrate effects on transition temperature are confirmed as being due to a mismatch between film and substrate thermal expansion coefficients. Decreasing…
Abstract Double-chain alkyl amphiphiles with oligo-l-glutamic acid-head group were prepared. These compounds were dispersed in water at pH 8 to 9 to form bilayer aggregates, in which helical and hollow structures were contained. New CD bands were observed in the solution.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolylactones. 1. Copolymerizations of glycolide and iε-caprolactoneHans R. Kricheldorf, Thomas Mang, and J. Michael JonteCite this: Macromolecules 1984, 17, 10, 2173–2181Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1…
The phenomenon of water-tree degradation of polyolefin insulating materials is reviewed with particular emphasis on the materials aspect of the problem. Specific topics include: methods of producing water trees in the laboratory, water-tree morphology, the nature of tree growth curves, and the effects of temperature,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSodium hypochlorite: a convenient oxygen source for olefin epoxidation catalyzed by (porphyrinato)manganese complexesBernard Meunier, Elisabeth Guilmet, Maria Eliza De Carvalho, and Rene PoilblancCite this: J. Am. Chem. Soc. 1984, 106, 22, 6668–6676Publication Date (Print):O…
Abstract : The book presents a survey and review of relaxation phenomena in many research fields. Contents: Viscous Liquids and Glasses; Relaxation in Polymers; Metallic Glasses; Spin Glasses; Electrical Relaxations in Ionic Conductors; and Theory and Models.
Silk fibroin is composed of heavy (H-) and light (L-) chains linked with disulfide bond(s). This paper describes immunological properties of fibroin H- and L-chains. Antiserum against H-chain, L-chain or whole fibroin could be obtained, indicating that each of these polypeptides is antigenic in rabbits. The antiserum…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
Abstract The 10-Å clay components of sedimentary rocks (“illites”) are commonly mixtures of 100% nonexpandable illite and an ordered illite/smectite mixed-layer mineral. If the proportion of the illite/ smectite in a mixture is sufficient to produce a measurable reflection between 33–35°2 θ (CuK α radiation) that is n…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotosensitized electron injection in colloidal semiconductorsJacques Moser and Michael GraetzelCite this: J. Am. Chem. Soc. 1984, 106, 22, 6557–6564Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1 October 1984https://…
Abstract Extremely small CdS particles were prepared in propanol−2 solution at − 78°C and in aqueous solution in the presence of sodium hexametaphosphate at room temperature. These colloids are colorless. Their UV absorption spectra exhibit several maxima. Aging of the colloids is accompanied by intensity variations i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface spectroscopic characterization of manganese/aluminum oxide catalystsBrian R. Strohmeier and David M. HerculesCite this: J. Phys. Chem. 1984, 88, 21, 4922–4929Publication Date (Print):October 1, 1984Publication History Published online1 May 2002Published inissue 1 Oct…