Cobalt-Platinum Alloys
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Mathematics for the Physical Sciences
"Mathematics for the Physical Sciences." Nuclear Science and Engineering, 16(3), p. 339
Far ultra-violet absorption spectra of cerium(III) and europium(III) aqua ions
The far ultraviolet absorption spectra of Ce and Eu is reported and discussed. The relatively broad and weak electron transfer bands were found to have the lowest wave-number in the most oxidizing central ion, Eu(III). A solution of 0.03 M Eu(III) perchlorate in 0.1 M HClO4 shows a maximum at 188 m mu , with the molar…
Structural and Magnetic Characteristics of TiFe2–ZrFe2 and ZrCo2–ZrFe2 Alloys
Structures and unit-cell dimensions for a number of alloys of TiFe2–ZrFe2 and of ZrCo2–ZrFe2 have been determined at room temperature, and the magnetic properties of alloys of the two systems have been investigated over a range of temperature extending from 4° to 650°K. Results for the TiFe2–ZrFe2 system show two term…
Effect of Crystal Orientation on Plastic Deformation of Magnesium Oxide
Stress‐strain data for single crystals of MgO tested in compression with 〈110〉 and 〈111〉 loading axes are presented for temperatures ranging from 26〉 to 1250°C. Stress‐strain data for polycrystalline MgO are also presented over the same temperature range. Single crystals with a 〈111〉 loading axis were found to deform…
Phase Equilibria in the System CaO—MgO
The liquidus, solidus, and subsolidus of the system CaO–MgO have been redetermined. X‐ray diffraction and optical techniques show that the maximum solid solution of MgO in the CaO lattice is approximately 17 wt% at 2370°C and the maximum solid solution of CaO in the MgO lattice is approximately 7.8 wt% at 2370°C. The…
Neutron Diffraction Study of the Intermetallic Compound FeSi
A powder neutron diffraction study has been made on the intermetallic compound, FeSi. From magnetic measurements this substance has been believed to be antiferromagnetic below 170°C. Neutron diffraction measurements at room temperature and at liquid nitrogen temperature, however, show no coherent antiferromagnetic int…
The Taxonomy and Structure of Diatom Populations from Three Eastern North American Rivers Using Three Sampling Methods
Matthew H. Hohn, Joan Hellerman, The Taxonomy and Structure of Diatom Populations from Three Eastern North American Rivers Using Three Sampling Methods, Transactions of the American Microscopical Society, Vol. 82, No. 3 (Jul., 1963), pp. 250-329
Use of Lithium Aluminum Hydride in the Study of Surface Chemistry of Carbon Black
Abstract Considerable interest has been focused in recent years on the effects of carbon black surface chemistry on its properties in rubber and other polymer systems. Methods have been developed in our laboratory for the quantitative characterization and description of the surface chemistry of carbon blacks. The tota…
A Study of Sulfenamide Acceleration
Abstract Sulfenamide—sulfur curing systems containing zinc oxide and stearic acid respond to both ionic and radical reaction conditions. Scorch delay and rate of the vulcanization are determined by the basicity and steric structure of the amine forming the amide, and by the accelerator-sulfur ratio. Sulfenamides deriv…
Thermal Studies of Nickel, Cobalt, Iron and Copper Oxides and Nitrates.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal Studies of Nickel, Cobalt, Iron and Copper Oxides and Nitrates.W. M. Keely and Harry W. MaynorCite this: J. Chem. Eng. Data 1963, 8, 3, 297–300Publication Date (Print):July 1, 1963Publication History Published online1 May 2002Published inissue 1 July 1963https://doi.…
The effect of quenching history, quenching temperature and trace impurities on vacancy clusters in aluminium and gold
It has been shown that in zone-refined aluminium, under specific quenching conditions, regions of stacking fault bounded by dislocation loops with a 1/3 [111] Burgers vector can be formed. The same type of defect can be produced by multiply quenching 99•995% aluminium. Repeated quenching therefore produces effects sim…
The fine structure of fibers and crystalline polymers. III. Interpretation of the mechanical properties of fibers
Abstract The mechanics of extension of plant fibers is considered in terms of a spiral arrangement of crystalline fibrils embedded in a noncrystalline matrix. Deformation may take place either by stretching of the fibrils or by extension such as that of a spiral spring. In the latter, the major resistance comes from t…
Strain-Enhanced Diffusion in Metals. II. Dislocation and Grain-Boundary Short-Circuiting Models
Rapid diffusion along dislocation cores generally enhances the average bulk diffusion in a dislocated crystal. If each diffusing atom has at least several opportunities to make rapid excursions along various dislocation cores, Hart has shown that DT/DT0 = 1+fDP/DT0. DT is the average bulk diffusivity, DT0 is the diffu…
PREPARATION AND STUDY OF ORDERING IN A(B′0.33Nb0.67)O3 PEROVSKITE-TYPE COMPOUNDS
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPREPARATION AND STUDY OF ORDERING IN A(B′0.33Nb0.67)O3 PEROVSKITE-TYPE COMPOUNDSFrancis. Galasso and Jane. PyleCite this: J. Phys. Chem. 1963, 67, 7, 1561–1562Publication Date (Print):July 1, 1963Publication History Published online1 May 2002Published inissue 1 July 1963http…
Observation of a Double Hyperfragment
Danysz, M; Garbowska, K; Pniewski, J; Pniewski, T; Zakrzewski, J A; Fletcher, E R; Lemonne, J; Renard, P A; Sacton, J; Toner, W T; O'Sullivan, D; Shah, T P; Thompson, A; Allen, P; Heeran, M; Montwill, A; Allen, J E; Beniston, M J; Davis, D H; Garbutt, D A; Bull, V A; Kumar, R C; March, P V
EPR Study of Impurity-Related Color Centers in Germanium-Doped Quartz
Since aluminum and germanium are two of the most easily incorporated impurities in crystalline quartz, the relationship of the color centers produced by x irradiation to these elements has been studied extensively. Previous work based on irradiation at 300°K has indicated that one type of electron-deficient center is…
Use of Gaussian Functions in the Calculation of Wavefunctions for Small Molecules. I. Preliminary Investigations
The results are reported of calculations on H, H2, He, Be, N, and NH in bases of Gaussian elementary atomic orbital functions. Such functions, though physically less satisfactory than the customary Slater exponential functions, have the advantage that all integrals can be evaluated exactly by closed analytical formula…
Mössbauer Study of Hyperfine Fields and Isomer Shifts in the Fe-Rh Alloys
Hyperfine fields and isomer shifts of ${\mathrm{Fe}}^{57}$ in the Fe-Rh system have been investigated by the M\"ossbauer technique in the composition range between 0 and 52 at.% Rh. When the Rh concentration exceeds 20%, chemical ordering of CsCl type develops and two distinct hyperfine fields are observed, correspond…
Mechanics of Foamed Elastic Materials
Abstract The deformation of a foamed elastic material, both in tension and compression, and its resistance to tearing and to tensile rupture, have recently been derived on the basis of a model consisting of a large number of thin threads joined at their ends to form a three-dimensional network. A general account of th…