Materials Literature
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The polarized Raman spectra of the room temperature (ordered) phase and the high temperature (disordered) phase of cesium nitrate have been recorded. The assignment of the spectral bands differs somewhat from earlier reports of the room temperature phase with a to/lo splitting of the ν3(E) band at ∼ 1350–1400 cm−1 rep…
Abstract Aus CdCl 2 oder CdBr 2 ließ sich durch Umsetzung mit LiBH 4 in Äther kein reines Cd(BH 4 ) 2 gewinnen, wohl aber Li 2 Cd(BH 4 ) 4 als ein Ätheratöl, sowie aus der Umsetzung von CdCl 2 mit NaBH 4 in Äther oder Tetrahydrofuran ein NaCd(BH 4 ) 3 . LiCd(BH 4 ) 3 und NaCd(BH 4 ) 3 bilden sich auch aus den Komponen…
Abstract Both initial network chain densities n M (0) and n s (0) of dicumyl peroxide‐cured natural rubbers were determined from the tensile stress and swelling method, respectively. The difference between n M (0) and n S (0) was usually constant, independent of the magnitude of network chain density. That is, it was…
The effect of swelling porosity on the thermal conductivity of irradiated U 3 Si fuel was deduced from electrical conductivity measurements on samples with pore volume fractions of 0.01 to 0.27. The Maxwell‐Eucken expression adequately represents the data, with β= 1.9±0.1. Postirradiation annealing of samples at 400°…
Abstract Tropone and its various derivatives were found to form several complexes having a composition of 1 : 1, 1 : 2, or 2 : 1 with mercury (II), zinc (II), cadmium (II), copper (II), cobalt (II), manganese (II), and nickel (II). In all cases, co-ordination would occur with the carbonyl oxygen.
Abstract The intermediate products of thermal decomposition of ferrous sulphate heptahydrate, in a current of air, have been investigated by X‐ray and chemical analysis. It was found that the monohydrate undergoes dehydration followed by oxidation, or combined hydrolysis and oxidation to Fe 2 O(SO 4 ) 2 and Fe(OH)SO 4…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure of Anionic Poly(2-phenylbutadiene)R. J. Ambrose and W. L. HergenrotherCite this: Macromolecules 1972, 5, 3, 275–279Publication Date (Print):May 1, 1972Publication History Published online1 May 2002Published inissue 1 May 1972https://pubs.acs.org/doi/10.1021/ma60027…
The electric field at a high voltage electrode is modified by corona discharge in the space surrounding the electrode. A knowledge of the resultant magnitude of the electric field is of value in the theoretical analysis of the corona. Systems of cylindrical geometry are of particular importance because of applications…
Abstract The theory of Raman relaxation is developed without the approximation of small wave vectors for the lattice phonons and it is shown that the accurate theory reduces into the known one if the expressions are expanded into infinite series and only the first term retained. The temperature dependence of electroni…
Thermoluminescent (TL) glow curves of rf-sputtered SiO2 films deposited on silicon have been measured and correlated with optical absorption of the films. As-sputtered SiO2 films are thermoluminescent without further exposure to exciting radiation. Films with a strong optical-absorption band at 7.6 eV (E band) give fi…
On assuming the random distribution of Cr 2+ ions and occupation of intrinsic Cr-vacancy sites, the relation between the equilibrium sulfur pressure P S 2 and the deviation from the stoichiometric composition Cr 2 S 3 was calculated and was confirmed experimentally. The magnetic susceptibility and the electrical resis…
An RTV silicone and high density polyethylene are exposed in an activated gas plasma for varying times and varying conditions. Both oxygen and argon are used. Changes in critical surface tension of wetting as determined by contact angle measurements are reported. Bondability of the treated surfaces is evaluated with b…
In modern microelectronics, complicated structures with very small dimensions must be fabricated on active-device materials. This task has been traditionally accomplished by photolithographic techniques, but electron-beam exposure of resist materials has recently been explored [1]-[3]. Submicron electron devices have…
The plastic deformation and strain hardening of NaCl crystals and f.c.c. crystals have much in common. The easy glide hardening rate for NaCl can be as low as that observed in copper. Random slip on the conjugate system can increase the hardening rate and cut short the easy glide extension. In Stage II of deformation,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron spin crossover in iron(III) dithiocarbamatesRichard R. Eley, Raymond R. Myers, and Norman V. DuffyCite this: Inorg. Chem. 1972, 11, 5, 1128–1130Publication Date (Print):May 1, 1972Publication History Published online1 May 2002Published inissue 1 May 1972https://pubs…
Abstract The effect of rubber particle size on the tensile properties of rolled and unrolled acrylonitrile‐butadiene‐styrene has been studied by considering model systems consisting of mixtures of a small particle (0.1 micron diam) rubber, S , and a large particle (0.56 micron diam) rubber, L , in an SAN matrix. Befor…
Weiss molecular field theory has been applied to spinels containing two types of ions carrying magnetic moment. By neglecting AA and BB interactions and considering only the four AB interactions between the two types of ion in the two types of site, it is shown that anomalous spontaneous magnetization curves can arise…
The motion of dislocations through randomly positioned localized and thermally-penetrable obstacles interacting with dislocations only at contact is in the form of local penetration and short range sideways’ unzipping ‘. Under an applied stress, the spacings of obstacles along the dislocation line obey a nearly expone…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCooxidation of isopropyl alcohol and oxalic acid by chromic acid. One-step three-electron oxidationFariza Hasan and Jan RocekCite this: J. Am. Chem. Soc. 1972, 94, 9, 3181–3187Publication Date (Print):May 1, 1972Publication History Published online1 May 2002Published inissue…
A technique utilizing electroplating is described for the preparation of specimens for transmission electron microscopy, which show the relation between surface detail and internal structure. The cleared channels in deformed neutron irradiated copper crystals have been correlated with surface slip steps indicating tha…