Materials Literature
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Abstract CaF 2 and SrF 2 crystals are doped with trivalent yttrium ions, and X‐irradiated, which results in similar coloration spectra for both substances. The bands seem to satisfy MOLLWO 's relation v a 2 = const, since the SrF 2 bands are shifted to longer wavelengths compared with the corresponding CaF 2 bands. Th…
Films were obtained by anodic treatment of Al, Mg, Ni, Fe, Zn, Bi, Cd, Co, and Cu in and Al, Bi, Cd, Cu, and Zn in . A formation voltage of 30v was applied for 10 min in all cases except Al in where the maximum formation voltage was 100v. The anodic films were studied by electron diffraction and chemical analyses. Fil…
Abstract Bei Elektronenbestrahlung von Metallen interessiert der totale Wirkungsquerschnitt σ d ( E ) ( E Elektronenenergie) für Stöße, die zu einer bleibenden Verlagerung der von Elektronen getroffenen Atome (Primäratome) führen. σ d ( E ) wird experimentell aus Widerstandsmessungen bestimmt und kann theoretisch bere…
The diffusion coefficients of hydrogen in β‐zirconium were calculated from experimental hydrogen sorption curves. The results were D ( cm 2 / sec ) = 5.32 × 10 − 3 exp ( − 8320 / RT ) , (760°–1010°C). This relationship was independent of hydrogen concentrations (to 41 a/o H) and oxygen concentrations (to 4.2 a/o O) in…
Abstract Neutron powder diffraction patterns are measured at 50°C and liquid nitrogen temperature. The crystal structure is defined as D8 8 (space group P6 3 /mcm), in agreement with CASTELLIZ 's data [2]. It is found that the atoms in the 4 (d) and 6 (g) positions have magnetic moments of (3 ± 0.1) and (2 ± 0.1) Bohr…
Melting relations in the systems CaO‐manganese oxide and MgO‐manganese oxide in air have been determined at temperatures up to 1705°C. In the system CaO‐manganese oxide four crystalline phases have stable existence in equilibrium with liquids: lime (approximate composition CaO‐MnO), spinel (approximate composition Mn…
It has been demonstrated that the use of solvent additives can substantially increase the rate of radiation-induced graft polymerization in the systems polyethylene–styrene, polypropylene–styrene, polyvinyl chloride–styrene, nylon–styrene, polyethylenemethyl acrylate, polypropylene–methyl acrylate, nylon–methyl acryla…
The mean free paths and attenuation lengths of hot electrons and holes in metals are calculated by Morte Cario methods. The results are compared with experimental results for electrons in Au,-Ag, Cu, and Pd and holes in Au. (T.F.H.)
Abstract
J. F. Duncan and P. W. R. Wigley, J. Chem. Soc., 1963, 1120 DOI: 10.1039/JR9630001120
The cations Na, K, NH4, Ca, Mg, Mn, and, in certain instances, Ba, Sr, and Pb combine with the anion SO4 to form 58 mineral species. Slightly more than half are hydrous, and several contain Cl, F, or CO3. Infrared absorption spectra of most of the above sulfate s have been obtained with a split beam infrared spectroph…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDEHYDROXYLATION OF KAOLINITE. I. KINETICSF. Toussaint, J. J. Fripiat, and M. C. GastucheCite this: J. Phys. Chem. 1963, 67, 1, 26–30Publication Date (Print):January 1, 1963Publication History Published online1 May 2002Published inissue 1 January 1963https://pubs.acs.org/doi/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE KINETICS OF THE OXIDATION OF HYDROGEN PEROXIDE BY CERIUM(IV)1G. Czapski, B. H. J. Bielski, and N. SutinCite this: J. Phys. Chem. 1963, 67, 1, 201–203Publication Date (Print):January 1, 1963Publication History Published online1 May 2002Published inissue 1 January 1963http…
The values of the upper yield, the lower yield and the flow stresses of polycrystalline Armco iron are shown to have very similar dependences on temperature between 78°K and 200°K. The variation with temperature of the component of the upper and lower yield stresses which is associated with the unpinning of locked dis…
A wide range of compositions of the title system have been prepared with x ranging from 0.10 to 0.99, and x‐ray parameters and pertinent thermoelectric properties such as Seebeck coefficient, electrical resistivity, and thermal conductivity were determined. Particular emphasis was given to the range of x from 0.95 to…
A method for obtaining extremely wide-band light modulation by traveling-wave interaction in electro-optic or magneto-optic materials is described. When the intrinsic velocity of microwaves in the material is appreciably less than that of light, the synchronism conditions require the light to be directed obliquely wit…
Abstract not Available.
An oxide of titanium, apparently Ti 2 O 3 , showed solid solubility in Al 2 O 3 of 1.0, 1.8, and 2.5 mole % at 1400°, 1600°, and 1700°C, respectively, when heated in hydrogen with a dew point of about ‐50°C. At the same temperatures in air, however, no indication of solid solubility (of TiO 2 , presumably) was found b…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDEHYDROXYLATION OF KAOLINITE. II. CONDUCTOMETRIC MEASUREMENTS AND INFRARED SPECTROSCOPYJ. J. Fripiat and F. ToussaintCite this: J. Phys. Chem. 1963, 67, 1, 30–36Publication Date (Print):January 1, 1963Publication History Published online1 May 2002Published inissue 1 January…
R. J. H. Clark and T. M. Dunn, J. Chem. Soc., 1963, 1198 DOI: 10.1039/JR9630001198