Materials Literature
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A B2. type Fe-40 at % Al ordered alloy was irradiated at 20 K either with fission neutrons or 2.5 MeV electrons. During isochronal annealing experiments of the radiation induced resistivity a different behavior was observed for the two irradiations. A decrease below pre-irradiated resistivity occurs after electron irr…
Abstract The specific resistance‐thickness of ScH x (vacuum 10 −5 to 5 · 10 −6 Torr) and Sc films (vacuum 1 · 10 −8 to 3 · 10 −8 Torr) relationships have been obtained by keeping a record of a film resistance directly in the course of condensation. The results are discussed according to the theory F UCHS ‐S ONDHEIMER…
The Cu-Pd-Ag dental base alloy of higher Ag contents which contains 15.8 at%Ag was aged isothermally at various temperatures between 573 and 773 K after quenching from the solid solution temperature into iced water. In order to investigate ageing characteristics of the alloy, hardness tests, electrical resistivity mea…
コンクリートの凍結融解試験方法の動向について述べている。本試験方法のJIS原案は, 日本の試験装置の現状を考慮してASTM C 666とほぼ同様の方法をとってはいるが, 細部については同一のデータが得られるように改められた。また参考試験として, 凍結融解後の長さ変化の測定が取り入れられている。
An antioxidant commonly present in black rubber, N-isopropyl-N'-phenyl-p-phenylenediamine (IPPD) caused very rapid oxidation and denaturation of purified hemoglobin. In the red cells, the reaction resulted in the formation of Heinz bodies, a decrease in reduced glutathione concentration, and stimulation of the hexose…
This paper reviews the corrosion problems of copper tube experienced in fresh water service. Following three distinct types of corrosion are discussed; (1) dissolution of copper, (2) pitting corrosion, and (3) erosion corrosion.Dissolved copper ion, which may cause green stains by forming insoluble cupric soap or acce…
Abstract Cerium Sulfate octohydrate crystals were crystallized from aqueous solutions under controlled conditions. The solubility measurements were carried out on temperatures between 10 and 80°. Thermoanalytical methods were applied for the study of the thermal behaviour of this compound. Raman spectra of polycrystal…
We report the results and interpretation of precision measurements of the thermal conductivity, electrical resistivity, and thermopower of potassium made from just below the melting temperature, 335.5 K, to 700 K. It is found that the Lorenz function is approximately 10% below the Sommerfeld value in the solid state,…
The damage of nickel-base heat resistant alloys exposed to hydrogen at high temperature and pressure was investigated. Tested materials were mainly Inconel 600, Hastelloy X and nickel. Inconel 600 solution-treated exhibited embrittlement due to the occluded hydrogen. Hastelloy X solution-treated did not exhibit embrit…
The dissolution properties of hydrochloride, sulfate, and iodide salts of berberine were compared. The apparent solubility and dissolution rate of the hydrochloride salt were less than those of the sulfate salt in media resembling GI fluids with respect to pH. The common ion effect on the solubility of berberine hydro…
This paper presents guidelines for corrosion testing of titanium with respect to five general modes of corrosion failure that are known to titanium. These modes are general corrosion, crevice corrosion, hydrogen embrittlement, stress-corrosion cracking, and anodic breakdown pitting.
In order to obtain the vibrational spectra of molten silicates, infrared emission spectra of molten M2O·xSiO2 (M=Li, Na, K, and x=1 to 4 or 5) were measured in the range of wave numbers between 25000 and 400000 m−1 at temperatures 50 K higher than their liquidus.Transmission spectra in the molten state were derived fr…
Studies by X-ray photoelectron spectroscopy (XPS) have been carried out in order to make clear the structure of vitreous silicate. In a previous paper, three kinds of oxygen ions, i.e. O0, O− and O2−, were analyzed from the O1s XPS spectra for several compositions of lead silicate glass by using an electronic computer…
Enteromorpha Link is primarily a marine genus that has been occasionally reported from inland salt springs and some inland lakes with high salt concentrations (Collins, 1909; Smith, 1950). In contrast to marine species, the mature thalli of most freshwater Enteromorpha consist of long, usually branched, hollow tubes w…
Plastics may be subjected to mild stress and strain without failure or they may be subjected to weak solvents or aqueous surfactants without failure, but when they are subjected to combination of these two types of variables they often suffer catastrophic brittle fracture. Such failure has been named environmental str…
A Type 348 stainless steel in-pile tube irradiated to a fluence of 3 × 1022 neutrons/cm2 (E > 1 MeV), 57 displacements per atom, was destructively examined. The service had resulted in a maximum total creep of 1.8 percent at the high fluence. The metal temperature ranged between 623 and 652 K, hence the thermal…
Four grades of high strength maraging steel were tested in air and aqueous solutions for susceptibility to stress corrosion cracking and hydrogen embrittlement. Electrochemical methods were used to characterize each alloy and to control the test conditions during slow strain rate tensile tests. Environment sensitive f…
We have studied the 19F NMR of the TlSn2F5 compound at various temperatures and frequencies. While the measured T1 shows a classical behaviour for T < 358 K, as is generally observed in ionic conductors, it undergoes a sudden increase at T ∼ 358 K corresponding to a change in the crystallographic space group. For high…
Conference International Conference on Surface and Colloid Science, International Conference on Surface and Colloid Science, ICSCS, Surface and Colloid Science, Fourth, Jerusalem, Israel, 1981-07-05–1981-07-10 Published Online: 2009-01-01 Published in Print: 1981-01-01 © 2013 Walter de Gruyter GmbH, Berlin/Boston
Effects of certain solute elements on the recrystallization temperature of copper have been studied by X-ray, micro-hardness and electrical resistivity measurements. Specimens of copper alloys containing solute elements of 0.01–0.3 at% were melted and cast in vacuo, and cold rolled to 90% reduction. The recrystallizat…