Materials Literature
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It is noted that, approximately 25 years ago, commercial electronic instruments were brought on the market that heralded a new era in dielectric measurements; this electronic era is now rapidly drawing to a close, and is on the verge of being eclipsed by an era that could be called intelligent instruments. The develop…
The hot isostatic pressing (HIP) of four alumina powders is studied in the temperature range 1100° to 1400°C, at 5‐ to 200‐MPa applied pressure, and for times ranging from 0.5 to 4 h. Density increases with increasing HIP temperature, pressure, and time; decreasing grain size results in increased density after HIP. An…
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Rapid solidification processing generally results in fine grained and macrosegregation free microstructures and improves hot-workability of highly-alloyed metals (e.g., superalloys and high alloy steels).The Osprey Process is a technology capable of producing rapidly solidified materials in thick sections. The Process…
The scaled particle theory of Cotter for straight spherocylinders was extended to semiflexible polymer solutions following Khokhlov and Semenov's procedure to calculate the isotropic-liquid crystal phase boundary concentrations and osmotic pressure of the solution, with the diameter d and persistence length q of the p…
Abstract The effect on the form and structure of starch granules caused by cationisation using a solvent, by dry cationisation and by cationisation in a water slurry has been studied by means of scanning electron microscopy (SEM). By means of energy‐dispersive X‐ray analysis (EDXA) and electron spectroscopy (ESCA) ana…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic and thermodynamic acidity of hydrido transition-metal complexes. 6. Interstitial hydridesRolf T. Weberg and Jack R. NortonCite this: J. Am. Chem. Soc. 1990, 112, 3, 1105–1108Publication Date (Print):January 1, 1990Publication History Published online1 May 2002Publish…
Co-Fe-P and Co-Fe-Sn-P amorphous soft magnetic alloys have been developed by electroplating. These alloys have zero magnetorestrictive compositions and show a high saturation magnetic induction B/sub s/ of 10-13.5 kG and high permeability of 3000-5000 at 5 MHz with 2- mu m thickness. It was found that the addition of…
Abstract The properties of miscible phenolphthalein poly(ether ether ketone) (PEK‐C)/polysulfone blends have been measured by dynamic mechanical analysis and tensile testing. The blends are found to have single glass transitions that vary continuously with the composition. The tensile moduli exhibit positive deviation…
We present the evidence for the surface density of states (SDOS) of the hydroxylated and reduced rutile TiO2 (110) single crystal different from the bulk electronic property by tunneling spectroscopy using scanning tunneling microscopy technique (STM/TS). The surface band gap energy (SEg) was 1.6 eV as the tunneling-a…
In order to further examine the effect of the addition of an excess amount of H 2 SO 4 to CuSO 4 solution on the morphological variation of copper film during electrodeposition carried out at relatively higher cathodic overpotentials, x‐ray diffraction patterns of the copper film were analyzed. The ratio of the relati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvidence for an Ag4O3 phase of silver oxideA. N. MansourCite this: J. Phys. Chem. 1990, 94, 2, 1006–1010Publication Date (Print):January 1, 1990Publication History Published online1 May 2002Published inissue 1 January 1990https://pubs.acs.org/doi/10.1021/j100365a093https://d…
Abstract A large number of polypropylene samples, of isotacticities spanning the range 0.35 to 1.00 mm, have been examined by differential scanning calorimetry (DSC) in order to establish a calorimetric index for determining stereostructure. Crystallization studies show that the crystallization onset temperature decre…
Self-accommodation process and the resulting structure of the orthorhombic martensite in a Ti-Ni-Cu shape memory alloy were investigated.Observations of the self-accommodation process of habit plane variants of the orthorhombic Ti-Ni-Cu martensite were made by transmission electron microscopy, and the three-dimensiona…
Various Nd-Fe-B sintered magnets of different sizes were prepared by mechanical cutting and by the Bond method. Magnetic properties were measured as a function of the S/V value, which is the ratio of surface area to volume of the sample. For samples with S/V>
Rotational dynamic magnetostriction was measured as a function of rotating magnetic flux density on nonoriented and grain-oriented silicon steel sheets under various magnetization conditions. Rotational dynamic magnetostriction was measured by using a special strain gage which provides x- and y-direction output. Rotat…
Surface prickle of fabrics can be a factor limiting the use of the coarser types of wool in apparel or upholstery products. An investigation is reported in which, in order to find a method of measuring prickle, a selection of fabrics with a widely differing number and stiffness of protruding fibres was assessed for pr…
The both-faces-hindered and highly symmetric complexes 5,10,15,20-tetra(2′,6′-dipivaloyl-oxyphenyl)porphyrinato-iron(II) and -cobalt(II), which have no amide residues but ester ones in the fence groups, have been synthesized. The iron(II) complex formed stable and reversible dioxygen adducts in toluene at 25 °C. The h…
Amorphous magnetostrictive Co-Fe-Si-B wires exhibiting square and bistable hysteresis loops have been obtained by tension annealing treatments of the wires cold-drawn to lower than 0.05 mm in diameter from the as-quenched state (0.125 mm in diameter). Bistable switching characteristics were observed even in a 1-cm len…
Unicellular algae are autotrophic eukaryotes which contribute to overall primary production in any aquatic ecosystems.Furthermore, some of them are very usefull in the aquaculture of fish, shrimp and shellfish as primary live food.However, the pathogens for the unicellular algae are not well known.Although various alg…