Materials Literature
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Abstract The voltage relaxation of galvanic cells with zirconia electrolytes polarized between an inert silver electrode and an Fe + FeO electrode has been analyzed to obtain the diffusion coefficient of the electronic minority charge carriers in the temperature range between 700 and 900 °C. The method has been examin…
Abstract The piezoelectric d ‐ and e ‐constants, together with the elastic constant and the dielectric constant, were measured for oriented poly(γ‐benzyl‐glutamate) (PBG) films with various elongation ratios as a function of frequency and temperature, using an apparatus developed by us. The results are discussed in te…
The vertical sections of the Fe-Cr-Co system at 15wt%Co + 3wt%V, at 15wt%Co + 5wt%V, and at 15wt%Co + 3wt%V + 2wt%Ti are constructed. The extension of the α phase region of the system at 15%Co and 5%V, and at 15%Co and 3%V + 2%Ti is enough to allow for the solution treatment of the alloys with 21∼23%Cr at any temperat…
Insulation of 3.3 kV and 6.6 kV XLPE and PE cables was found to be mechanically stressed by 20 to 100 kg/cm2during the process of water tree formation. Infrared absorption curves change if water trees are created. A mechanism of the generation of water trees is discussed in detail. Critical values to judge the level o…
A new metallic glass, (METGLAS®alloy) Co74Fe6B20, has been identified which exhibits ∼ zero magnetostriction (|\lambda_{s}|<0.4\times10^{-6}). The saturation induction of this new alloy, 11.8 kG, is approximately twice that reported for other non-magnetostrictive glasses with similar transition-metal (TM) content b…
This paper considers the problem of estimating the core losses in a thin magnetic steel lamination when the driving flux contains not only the fundamental, but also odd harmonic components. Two numerical methods of predicting the eddy current losses due to an arbitrary flux waveform are briefly described. The importan…
Abstract Linear crystalline polymers can be processed to high degrees of orientation sufficient to produce dramatic increases in tensile strength and modulus. Three processes have been identified for inducing such orientation: cold drawing, hydrostatic extrusion, and solution spinning. All three processes utilize a hi…
A procedure for including measured analytical uncertainty into data analysis methodology is discussed. The suitability of various dispersion matrices and matrix rank determination criteria for data having analytical uncertainty is investigated. A criterion useful for judging the number of factors insensitive to analyt…
The observation of the domain pattern of 3% grain-oriented silicon-iron (transformer steel) by the Kerr magneto-optic effect has enabled a greater understanding of the basic magnetization processes of this material to be obtained. In this review paper, an attempt is made to describe recent progress in this field of st…
The discontinuity in the hard direction magnetisation curve for the alloy Pr2(Co0.6Fe0.4)17has been studied over the temperature rauge 5K-300K using a partially aligned polycrystalline sample. By means of the singular point detection technique we have measured the temperature variation of the anisotropy field and also…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and spin-state studies in solution of .gamma.-substituted tris(.beta.-diketonato) iron(III) complexes and their spin-equilibrium .beta.-ketoimine analogues derived from triethylenetetramineEric V. Dose, Kenneth M. M. Murphy, and Lon J. WilsonCite this: Inorg. Chem.…
The electrical membrane resistance rho(0) of the marine alga Valonia utricularis shows a marked maximum in dependence on the turgor pressure. The critical pressure, P(c), at which the maximum occurs, as well as its absolute value, rho(0) (max), are strongly volume-dependent. Both P(c) and rho(0) (max), increase with d…
Cross sections for evaporation residue formation and fission following complete fusion of $^{35}\mathrm{Cl}$ with $^{27}\mathrm{Al}$, $^{48}\mathrm{Ti}$, $^{54,56}\mathrm{Fe}$, $^{58,60,62,64}\mathrm{Ni}$, $^{90}\mathrm{Zr}$, and $^{116,124}\mathrm{Sn}$ have been measured with counter telescopes for laboratory project…
Abstract The structures of the precipitates of free‐radical poly(4‐vinylpyridine) (Vpy), free‐radical poly(2‐Vpy) and isotactic poly(2‐Vpy) with M(II)Cl2 (M = Co, Ni, Cu, Zn) obtained from solution have been investigated. The polymer compounds are similar to the known crystalline monomeric Vpy complexes and, with one…
Abstract Following the discovery that linear polyethylene can be drawn to very high draw ratios to produce oriented fibres and films with ultra‐high initial moduli, a similar study has been undertaken for polypropylene. In particular, the modulus/draw ratio relationship has been obtained for a range of polymers of dif…
An inexpensive interstitial water sampler using dialysis bags for the in situ separation of water from particulate matter in lake waters and sediments is described, and an example of dissolved silica is given.
X-ray, magnetization, and spin-echo NMR techniques have been used to measure the changes in the atomic ordering along with the effect of these changes on the local moment and the internal field distributions in ${\mathrm{Fe}}_{3\ensuremath{-}x}{\mathrm{V}}_{x}\mathrm{Si}$ alloys for $0\ensuremath{\le}x\ensuremath{\le}…
The electrochemical and corrosion behavior of nickel in deoxygenated and oxygenated H2SO4 (pH = 0.3) have been studied by the rotating disk technique. Some preliminary corrosion inhibition results of nickel by benzotriazole(BTA) have also been obtained. In the absence of oxygen, three distinct Tafel regions have been…
Abstract Caprolactam was copolymerized with 1,5‐dioxo‐1‐methyl‐4‐azaphosphepane or methylphosphacaprolactam. The molecular weight of the resulting copolymers decreased with increasing concentration of the thermally labile phosphorus moieties. Copolymers based on ≥40% caprolactam were shown to be crystalline by differe…
Since the internal energy $E$ is a monotonically increasing function of the temperature $T$, the moment $M(T)$ can be expressed as a function of internal energy $E$. The corresponding form of $E(M)$ is focused on in this paper. For ferromagnets, the two-dimensional Ising model is used to obtain the exact form of $E(M)…