Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The potentiostatic scratch method has been systematically applied to rank the pitting corrosion (PC) resistance of commercial and laboratory austenitic, superaustenitic, and extra low interstitial ferritic stainless steels in chloride solutions simulating the aggressivity of the human body and seawater. This technique…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRole of higher triplet states in the anthracene-sensitized photoisomerization of stilbene and 2,4-hexadieneJack Saltiel, David E. Townsend, and Alan SykesCite this: J. Am. Chem. Soc. 1983, 105, 9, 2530–2538Publication Date (Print):May 1, 1983Publication History Published onl…
The sorption rate of swelling penetrants in glassy polymers has been considered as controlled both by the swelling kinetics and the penetrant diffusion through the swollen layer. The stress exerted on the glassy core at the moving boundary is the driving force for the swelling, and results from an osmotic stress and a…
The effect of microstructure on failure initiation of sodium beta″‐alumina solid electrolytes have been investigated by acoustic emission detection. Mode I failure initiation follows Weibull statistics with a modulus of about 2.5. The observed average critical current densities were 145 and 640 mA/cm −2 for large and…
SUMMARY A high‐resolution electron‐microscopic study of sodium β′″‐alumina, a polytype of the more‐widely‐studied sodium β‐ and β″‐alumina, has been undertaken using the 600 kV instrument at Cambridge University. Images revealed the loss of sodium‐containing planes, which had caused crystals to collapse and shear into…
In a previous paper[8] breakdown strengths of c-C4F8/SF6/CO gas mixtures in various proportions were reported for a 30mm rod-sphere gap under ac and impulse voltages. A mixture of 1% c-C4F8 + 59% SF6 + 40% CO exhibited higher dielectric strength than pure SF6 in the pressure range between 350 and 400 kPa. The present…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPerhydroazulenes. 4. 6-tert-Butyl-4-oxoperhydroazulene systemHerbert O. House, Peter C. Gaa, Joseph H. C. Lee, and Don VanDerveerCite this: J. Org. Chem. 1983, 48, 10, 1670–1678Publication Date (Print):May 1, 1983Publication History Published online1 May 2002Published inissu…
The effects of 60 Co gamma radiation on the strength‐related mechanical properties of a borosilicate glass were examined. Although the glass darkened considerably, only a very slight densification was observed after irradiation to levels of 10 8 rads. The strength distributions were not appreciably changed by the irra…
The magnetic susceptibility χ and the electrical resistivity ρ of CrGe and Cr 11 Ge 8 are investigated at temperatures above 4.2 K. The magnetic susceptibility of CrGe exhibits a cusp at about 45 K and shows the T 2 dependence with positive coefficient at low temperatures. This behavior of CrGe, together with the beha…
Thermal conductivities of silicate and borate glasses were determined at 30°C by steady‐state methods. From the experimental data, factors representing the contribution of individual oxides (on a weight‐percent basis) were calculated by the least‐squares method. The experimental thermal conductivities and those calcul…
The infrared and resonance Raman spectra of the two long-lived forms of triphenylformazan and several of its derivatives have been examined. The spectra of unsymmetrically 15 N-labelled derivatives suggest that two tautomers exist for each of the two forms. This observation is confirmed by the spectra of 1-(p-halophen…
Abstract The reflectance spectra of orthorhombic GeSe crystals are studied in the region 0.5 to 12 eV in polarized light with E ∥ a and E ∥ b at 290 K and a Kramers‐Kronig analysis is performed. The thermoreflectance spectra are investigated in the region 1 to 5 eV for E ∥ a and E ∥ b at 300 and 90 K. The energy band…
Abstract The influence of ammonium polyphosphate (APP) and hexabromocyclododecane (HBCD) as flame retardant (FR) on poly(acrylonitrile) (PAN) has been examined. The APP–HBCD system behaves as an intumescent flame retardant (IFR) formulation, APP being the char‐forming agent and HBCD the blowing agent. A negligible gas…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProtein isolates from navy and pinto beans: their uses in macaroni productsAbdelmonem A. Seyam, Orville J. Banasik, and Merlin D. BreenCite this: J. Agric. Food Chem. 1983, 31, 3, 499–502Publication Date (Print):May 1, 1983Publication History Published online1 May 2002Publis…
Under conditions where molecules are forced parallel to the cell surfaces but do not orient themselves along a particular direction, we have observed the unwinding process. The cell thickness dependence of the transition temperature from Sm A to distorted Sm C * or Sm C, T c ( d ), has been obtained. The apparent tilt…
Hall coefficient and resistivity measurements have been made on single-crystal ZnO films prepared by chemical vapor deposition on sapphire substrates from 4.2 K to 300 K. Successive reduction of the film thickness from the surface and the rear (interface to substrate) revealed that there are two regions–a bulk region…
Stress corrosion cracking (SCC) of zirconium Grades 702 (commercially pure zirconium), 704 (a Zr-1.5 Sn alloy), and 705 (a Zr-2.5 Nb alloy) in nitric acid has been studied by constant strain techniques, optical microscopy, scanning electron microscopy, and electrochemical techniques. Zirconium and its alloys, except w…
The ratio weight:volume has been determined for ironwork from four archaeological sites. It is shown how this ratio can be used to determine the presence or absence of metallic iron in a corroded artifact. Experiments show that totally mineralized ironwork generally contains much less chloride than does ironwork retai…
Experiments on initiation of crevice corrosion were carried out on Al specimens in dilute aqueous solutions at ambient temperature. Transient current distributions within crevices were measured by a sectioned electrode technique, and microsampling was used to monitor dissolved aluminum, p H, and [Cl − ] composition ch…
The magnetization of ${\mathrm{Fe}}_{80}{\mathrm{B}}_{20\ensuremath{-}x}{\mathrm{C}}_{x} (0\ensuremath{\le}x\ensuremath{\le}8)$ ferromagnetic metallic glasses has been measured in the temperature range $0<T\ensuremath{\lesssim}180$ K (corresponding to $0<\frac{T}{{T}_{C}}\ensuremath{\lesssim}0.3$) and in magneti…