Materials Literature
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An analysis is presented for the Tammes problem: how must n points be distributed on the surface of a sphere in order that the minimum angular distance between any two of the points be a maximum? With the analogy of the capsid structure of small 'spherical' viruses, locally extremal arrangements are constructed in tet…
Hot-band grain size of 0.5% Si steels was changed from 42 to 115 μm by various combinations of several hot rolling and annealing conditions. The hot-bands were cold rolled from 2.3 to 0.50 mm and finally annealed for 1 min at several temperatures between 750 °C and 950°C. The values of magnetic induction B50 in the di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntroduction of carboxylic acid, aldehyde, and alcohol functional groups onto the surface of poly(chlorotrifluoroethylene)Anthony J. Dias and Thomas J. McCarthyCite this: Macromolecules 1987, 20, 9, 2068–2076Publication Date (Print):September 1, 1987Publication History Publi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPentacyanoruthenate(II)-pentaammineruthenium(II/III) binuclear complexes bridged by cyanogen, cyanide, and 4,4'-bipyridineShirin Siddiqui, Wayne W. Henderson, and Rex E. ShepherdCite this: Inorg. Chem. 1987, 26, 19, 3101–3107Publication Date (Print):September 1, 1987Publicat…
Sintered Nd15-Fe77-B8 magnets contain a multiphase microstructure. Our analytical transmission electron microscope study reveals that the Nd-rich phase, which is an essential part of the liquid phase sintering process can be divided into at least 4 subtypes with different Nd:Fe-ratios. Impurities of the raw material s…
A 17-membered O2N3-donor macrocycle has been appended to a derivatized silica gel substrate, and the binding and selectivity properties of the functionalized surface towards CO11, Ni11 CU11, Zn11 and Cd11 in aqueous solution have been investigated. Metal uptake was found to be concentration-dependent with the maximun…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA diffuse reflectance FTIR spectroscopic (DRIFTS) investigation of carbon-supported metal carbonyl clustersJ. J. Venter and M. A. VanniceCite this: J. Am. Chem. Soc. 1987, 109, 20, 6204–6205Publication Date (Print):September 1, 1987Publication History Published online1 May 2…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStability, critical thickness, and the time of rupture of thinning foam and emulsion filmsA. Sharma and E. RuckensteinCite this: Langmuir 1987, 3, 5, 760–768Publication Date (Print):September 1, 1987Publication History Published online1 May 2002Published inissue 1 September…
[110](001) slip has been studied in [112] aluminium single crystals deformed in creep. Metallographic and microstructural observations were performed. At 150°C, the two primary {111} planes in a symmetrical orientation are activated. At 180-200°C, (001) starts being activated in some areas of the sample. The correspon…
Abstract An experimental method was developed to measure simultaneously the net proton surface charge density (σ H ) and surface excesses of metal ( n M ) and ligand ( n L ) on an Oxisol suspended in a ML electrolyte solution. The soil sample was first saturated with a LiClO 4 solution whose pH and ionic strength were…
This paper reflects an investigation of the feasibility of photochemical generation of ozone by irradiating gases containing oxygen with Hg lamps of the highest performance emitting the 185 nm line. Besides the expected photostationary equilibrium, determining factors for practical yields in ozone generation by the 18…
Thermodynamic data as well as physical and electrochemical studies demonstrate that the composition of the passive layer on chromium depends on the potential and the electrolyte p H. The electrochemical properties of Cr 2 O 3 electrodes were compared with the anodic behavior of chromium in borate buffer solutions. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of singly reduced iron(II) porphyrinsRobert J. Donohoe, Michael Atamian, and David F. BocianCite this: J. Am. Chem. Soc. 1987, 109, 19, 5593–5599Publication Date (Print):September 1, 1987Publication History Published online1 May 2002Published inissue 1 Septe…
Polarized reflectivity spectra have been measured on K- and Rb-tetracyanoquinodimethane single crystals over a wide temperature range covering respective structural phase-transition temperatures. From an analysis of the intramolecular vibration spectra and charge-transfer exciton bands, thermal variations of dimeric m…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTControlled microcrystalline growth studies by dynamic laser-light-scattering methodsCharles H. Byers, Michael T. Harris, and David F. WilliamsCite this: Ind. Eng. Chem. Res. 1987, 26, 9, 1916–1923Publication Date (Print):September 1, 1987Publication History Published online1…
The structures of borate glasses have been simulated by use of molecular dynamics. A new type of potential calculated by means of the intermediate neglect of differential overlap (INDO) method and a three‐body potential were introduced into the molecular dynamics simulation. Boroxyl rings and diborate groups have been…
Abstract Mechanisms for low‐temperature relaxations of three spiro‐ring‐type epoxide resin systems with and without methoxy branches were investigated by comparison with those of a bisphenol A‐type resin system. In the spiro‐ring‐type epoxide resin systems, two well‐defined relaxation peaks, denoted as the β and β′ re…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProperties of dimethylsiloxane microphases in phase-separated dimethylsiloxane block copolymersBaoyu Wang and Sonja KrauseCite this: Macromolecules 1987, 20, 9, 2201–2208Publication Date (Print):September 1, 1987Publication History Published online1 May 2002Published inissue…
The mechanical behaviour of ferromagnetic materials must be modelled for such complex problems as noises or vibrations of electric machines. The difficulties concerning that aim are defined. Then the various causes of Magnetostriction are presented. This paper focuses on magnetic forces. On this point, several theorie…
The substitution effect of 20 kinds of elements has been studied in order to increase the intrinsic coercive force for the Nd-Fe-Co-B alloys. The substitution of Ga is found to increase the coercivity more than any other elements. The compositions which are suitable for both magnetic properties and thermal stabilities…