Materials Literature
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Abstract The toughening effect of the separate phases of ethylene/propylene block copolymers and their blends was studied by scanning electron microscopy (SEM). The results obtained show that the interfacial adhesion between separate phases and the isotactic polypropene (iPP) matrix in ethylene/propylene block copolym…
A method for retrieving the magnetization curve of a nonlinear coil is described. The parameters of a piecewise-linear or a third-order polynomial approximation can be obtained. A simple bridge RL-multivibrator, which includes an operational amplifier and this coil, is used. The coil parameters are calculated observin…
Abstract Plasticizers have been used for centuries to improve the processability and flexibility of a variety of materials. At the dawn of civilization water was used to plasticize clay for the production of pottery and clay tablets and the Ark was reputedly waterproofed with pitch plasticized with oil. Today the most…
The crystal structure of RbSm(${\mathrm{SO}}_{4}$${)}_{2}$\ensuremath{\cdot}${4\mathrm{H}}_{2}$O was determined at 296 K using the x-ray-crystallographic-diffraction technique. The unit cell is monoclinic with P${2}_{1}$/c space group. The structure can be envisioned as consisting of the following constituents: a nine…
Crevice corrosion behaviors of corrosion-resistant alloys (CRAs) with various Ni, Cr, and Mo contents were investigated in conditions simulating the sour gas environment encountered in oil and gas production. Crevice corrosion occurred more easily in a 0.1 MPa H2S environment than in a 1.0 MPa H2S environment. Ni, Cr,…
Microstructural characteristics of (i) the alloys strengthened by precipitation of a coherent LI2-ordered phase and (ii) the LI2-ordered alloys strengthened by the precipitation of coherent disordered phase are reviewed with particular emphasis on the effects of volume fraction and morphology of second phase. In the N…
A new approach for the removal of copper from solid ferrous scrap is described. With this proposal, solid ferrous scrap intermingled with copper is brought into contact with molten aluminium, which preferentially dissolves copper. After a duration of 5 to 10 minutes at a temperature of 1018 ± 5 K, steel scrap is remov…
Abstract Inclusions occurring in leucites from the Oscar and Zirkel Mesa leucite lamproites consist of high (>10 wt.%) and low (<4 wt.%) K 2 O discrete glass phases which are interpreted to have resulted from silicate liquid immiscibility. Both glasses are quartz-normative and rich in Ti, Fe, Mg, Ca and Ba and p…
Abstract A smectite formed by weathering of mica in a laterite pallid zone at Boddington, Western Australia has been investigated by analytical electron microscopy. The evidence suggests that this mineral has the chemical composition and swelling properties of ideal beidellite but is anomalous in containing abundant n…
Abstract Pb 2 MnO 4 wurde einkristallin dargestellt und die Kristallstruktur mit Röntgenmethoden aufgeklärt (Raumgruppe D –P 4 2 1 c, a = 12,773; c = 5,142 Å; Z = 8). Es bildet einen neuen Strukturtyp, der nicht mit Pb 2 PbO 4 bzw. Pb 2 PtO 4 isotyp ist. Der wesentliche Unterschied beruht auf Zick‐zack‐Ketten kantenve…
Abstract The effect of heat treatments on the total charge and water adsorption by Ca-, Na- and Li-saturated kaolinite was studied using extraction techniques and thermal gravimetric analysis, respectively. Measurements of cation exchange capacity indicated that the total charge of Li-kaolinite was reduced by approxim…
Several methods have been proposed for the measurement of the magnetic losses in electrical steel sheet in a rotating magnetic flux. The method considered here is based on determination of the field quantities and makes use of square specimens and an air gap between the pole faces and the specimen. We earlier reported…
With increasingly diversified demands on the mechanical properties of polymeric fibers, the question of whether properties can be varied independently or are related has become imperative. This report is concerned with the relation between tensile modulus and stress relaxation. The modulus-elongation curve of various…
Surface-Enhanced Raman Scattering (SERS) on HNO 3 -roughened copper foils has been used to follow the air oxidation of copper at room temperature and to study the surface reactions with azole compounds. It has been found that azoles react with metallic copper as well as copper oxides. SERS and IR studies show that the…
We developed models for the dynamic expansion of cylindrical cavities from zero initial radii for compressible, elastic-plastic, rate-independent materials with powerlaw strain-hardening. Results from cavity-expansion models were used to derive perforation models to predict residual velocities and ballistic limits for…
The electrochemical potentiodynamic reactivation (EPR) technique has been used to measure the degree of sensitization in type 304 (UNS(1) S30400) stainless steel with 0.052% C. In the first part of the work, the dependence of EPR results on testing temperature is quantified, thus permitting the conversion of field tes…
The effective nonlinearity parameter B/A of water containing a three-dimensional ensemble of randomly distributed uniform-sized trapped cylindrical bubbles was measured. The experimental results indicate that the dramatic enhancement of the effective nonlinear parameter B/A is due to the nonlinear resonance oscillatio…
Abstract Discrepancies between clay mineral and organic indicators of very low-grade metamorphism have been observed from the Southern Uplands of Scotland. In the Southern Belt, I-S expandability ranges from 18–5% and chitinozoan reflectance from 0·8–2·1% R 0 mean; a clear correlation exists between I-S expandability…
We examine how dopant profile and anodization conditions affect the formation of buried porous silicon layers in n − /n + /n − doped wafers. Wafers with peak n + donor concentration ≤10 18 /cm 3 exhibit stray dendritic pores propagating from the n + layer into the n − layers. Depending on the anodization conditions th…
Highly irradiated fuel rods and control rods are used in the Power Burst Facility Severe Fuel Damage (SFD) Test 1-4 to simulate conditions expected during a high-temperature, severe fuel damage accident in a pressurized water reactor. The objective of the test is to provide data on fuel and control rod behavior, hydro…