Materials Literature
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Abstract The size distributions and volume fractions of Ni4Ti3 precipitates in Ni-rich Ni–Ti shape memory alloys affect their mechanical and functional properties. In the present work precipitate sizes and volume fractions were measured after various thermo-mechanical treatments using transmission electron microscopy…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTAnisotropic-to-Isotropic Change in Lateral Force at the Surface of Single-Crystal Lamellae of High-Density Polyethylene during Low-Temperature AnnealingYuji Ryousho, Sono Sasaki, Toshihiko Nagamura, Atsushi Takahara, and Tisato KajiyamaView Author Information Department of Appl…
Abstract The capability of “second‐generation” precursors to act as a solvent of other precursor species, thus yielding a molten multi‐component source, has been investigated in detail. In particular, this novel approach has been applied to the MOCVD process of high quality, epitaxial LaAlO 3 thin films on SrTiO 3 (10…
Polymeric materials are increasingly replacing metallic materials as a result of their properties. In this work a composite of phenolic resin and sugar cane pulp was developed. The sugar cane pulp has been previously alkalinised, dried, and milled and the particles had been classified in a range of grain sizes. Experi…
The new axially substituted phthalocyanine (pc) complex of zirconium(IV) with citric acid is reported. It has been shown that the replacement of two Cl-atoms with two citric acid fragments takes place as the result of the reaction between [ZrCl2(pc)] and citric acid. The complex [Zr(citrate)2(pc)] was formed. The spec…
The effects of temperature, relative humidity, and wet-dry transition on initiation and propagation of filiform corrosion on coated aluminum alloy 6016 (AA6016 [UNS A96016]) have been studied. Corrosion products formed in the filament were analyzed using Fourier transform infrared (FTIR)-microspectroscopy. The aluminu…
At present the most promising principal solution of the divertor problem appears to be the use of liquid metals and primarily of lithium Capillary-Pore Systems (CPS) as of plasma facing materials. A solid CPS filled with liquid lithium will have a high resistance to surface and volume damage because of neutron radiati…
A grande maioria dos estudos fotoluminescentes foram realizados com materiais cristalinos, cuja emissão ocorre em temperaturas criogênicas, limitando a aplicação destes materiais. Por sua vez, determinados sólidos com alta densidade de defeitos (amorfos), como titanatos, tungstatos, zirconatos, entre outros, apresenta…
ABSTRACT Synthesis of protein by the major ampullate silk glands in the barn spider, Araneus cavaticus was stimulated by depleting the storage of silk protein in the ampulla by mechanically pulling fiber from the spigot. After this treatment, fine structural changes of the glandular epithelium during silk production w…
A High-energy single ion trajectory in a Si-based polymer thin film produces a cross-linked polymer nanowire with the length of 10–1000 nm and the thickness of 4.0–19.4 nm (radius of the cross section). The energy density deposited by incident ions and the molecular weight of the target polymer materials principally d…
<abstract language="eng">Contaminant gases in the atmosphere constitute an important problem to be solved in the world. The NOx gases produced as a consequence of engine high temperatures are deleterious to environment and human health, as they promote acid rain and can act in the same way as freons in the destruction…
This study examined the illuviation of clay and spodic materials in three Ultic Haplorthods derived from fine-textured materials from the Alishan Mountain of central Taiwan. Soil analysis, including field description, physical and chemical analyses, and micromorphological studies, was used to study the soils. The soil…
Mixtures of zinc, calcium and phosphate ions have been found to be effective (>90%) in inhibiting the corrosion of steel and zinc during immersion in acid rain solution and when used as pigment additions to organic coatings. The presence of calcium ions, in addition to zinc ions, appears to be fundamental in the inhib…
Abstract Single‐walled and multi‐walled carbon nanotubes (SWNT and MWNT, resp.) were prepared by applying the catalytic chemical vapor deposition (CCVD) technique. Different nanotube samples were obtained from the as‐synthesized carbon/catalyst composites by treatments applied to remove the catalyst and the amorphous…
Abstract This series of papers explores the effect of structural characteristics of 2,2,6,6‐tetramethylpiperidine‐based hindered amine light stabilizers (HALS) on the long‐term (40 months) thermal (110°C in air) and photo‐stabilization (Microscal unit wavelength >300 nm) performance characteristics of high‐density…
Abstract Low-temperature magnets derived from [M{N(CN)2}2(pm)] (M = FeII, CoII) have guest molecules incorporated in the clearance of the three-dimensional framework, where pm stands for pyrimidine. A pm molecule in [Fe{N(CN)2}2(pm)](pm) (1) was characterized as a guest by means of X-ray crystallographic analysis. The…
In this work we studied the optical properties of poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV) using polymeric blends with polystyrene (PS). The photoluminescence (PL) spectrum of MEHPPV present three characteristic peaks correlating to aggregate electronic transition at 608, 674 and 742 nm at 1…
The technical and economic aspects of the use of molybdenum depleted in the isotope 95Mo (DepMo) for the transmutation of actinides in a light water reactor are discussed. DepMo has a low neutron absorption cross section and good physical and chemical properties. Therefore, DepMo is expected to be a good inert matrix…
The investigation of self-healing ceramic coatings is of great importance in many critical applications. We have investigated the feasibility of self-healing coatings which automatically repair the damaged part by physical and chemical reaction. In particular, we have focused on swelling clay (hectorite), which expand…
Recently, increasing concern about pollution of groundwater by organic chemicals has led to research on the use of various adsorbents. This study addressed the sorption of phenol and organic compounds by two organoclays and a coal/mineral complex (ARO). The organoclays used were a bentonite from Brazil (SVC) and Wyomi…