Materials Literature
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An experimental system was developed to reproduce stress corrosion cracking (SCC) of API X-60 line pipe steels in highly alkaline (pH = 10) carbonate-bicarbonate (1 N sodium carbonate [Na2CO3] + 1 N sodium bicarbonate [NaHCO3]) solutions. Intergranular fracture developed in precracked specimens under very low frequenc…
Experimental information about the microscopic structure and the changes in this structure at macroscopic phase transitions for the ferroelectric perovskites provide direct tests of theoretical descriptions of ferroelectricity. Unfortunately, the local ferroelectric displacements can differ from the average periodic s…
The most common anticorrosive pigments contain lead (Pb) or hexavalent chromium (Cr) compounds. These pigments are particularly hazardous and contribute to contamination of the environment. The use of zinc phosphate (ZP) has been recommended often for the formulation of environmentally compatible anticorrosive priming…
The grain size of in situ Si 3 N 4 is varied, and its effects on strength‐flaw size relations are related to the behavior of a bridging zone behind the crack tip. The bridging‐zone properties are calculated from a Dugdale model assuming that the bridging zone has a constant bridging stress ( p *) and length ( D b ) at…
The α→ω phase transformation products in shock-loaded pure Zr have been investigated. A portion of the ω phase is retained as a metastable phase after the pressure release. The orientation relationship (0001)α//(101l)ω and [1010]α//[112 3]ω observed between the two phases differs from those previously reported in Zr.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTScaling Theory of Planar Brushes Formed by Branched PolymersE. B. Zhulina and T. A. VilgisCite this: Macromolecules 1995, 28, 4, 1008–1015Publication Date (Print):February 1, 1995Publication History Published online1 May 2002Published inissue 1 February 1995https://pubs.acs.…
A series of compounds with the ${\mathrm{ThMn}}_{12}$-type structure, R${\mathrm{Fe}}_{11.35}$${\mathrm{Nb}}_{0.65}$ (R=Y, Sm, Gd, Tb, Dy, Ho, Er, and Lu), were synthesized. The corresponding nitrides, obtained by gas-solid reactions, retained the same structure as their parent compounds, but with a relative volume ex…
Sawyer-Tower polarization (P-E) measurements have revealed dielectric hysteresis loops in antiferroelectric lead zirconate (PZ), suggestive of weak ferroelectric tendencies. Both polarization saturation and reemergence were observed which were on the order of 0.1 and 0.05 \ensuremath{\mu}C/${\mathrm{cm}}^{2}$, respect…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTModification of Ovalbumin with Glucose 6-Phosphate by Amino-Carbonyl Reaction. Improvement of Protein Heat Stability and Emulsifying ActivityYasuko Kato, Takayoshi Aoki, Natsuki Kato, Ryo Nakamura, and Tsukasa MatsudaCite this: J. Agric. Food Chem. 1995, 43, 2, 301–305Public…
Previous work has shown that under mechanical deformation, three grades of polyethylene which differ mainly in terms of branch content exhibit two yield points. The first yield point occurs at low applied strains and marks the onset of temporary plastic deformation; the second yield point occurs at higher strains and…
<div class="htmlview paragraph">Effects of pilot injection on diesel combustion have been studied on a turbocharged direct-injection diesel engine. Under various engine operating injection conditions, emissions were measured while the pilot quantity and timing were varied. The result showed that the pilot inject…
Abstract Redox cycles are common in nature and likely have a profound effect on the behavior of soils and sediments. This study examined a key component of redox cycles in smectites, namely, the reoxidation process, which has received little attention compared to the reduction process. Unaltered (oxidized) and reoxidi…
3,4,5-tri-fluorobenzene derivatives with different core structures have been synthesized and their physical properties have been determined. Most of the compounds are nematic with broad existence regions. The materials have large dielectric anisotropy, low viscosity, low optical anisotropy and very good voltage holdin…
A series of tests was conducted on two carbon/epoxy systems to assess key factors in the characterization of the thermo-oxidative stability of composite materials. Mechanical properties (open hole compression strength, fracture toughness, and unidirectional compression strength) were determined from specimens aged in…
The phase ordering process following a quench to both the uniaxial and biaxial nematic phases of a quasi-two-dimensional nematic liquid crystal is investigated numerically. The time dependences of the correlation function, structure factor, energy density, and number densities of topological defects are computed. It i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinduced Doping and Photolithography of Methyl-Substituted PolyanilineG. Venugopal, X. Quan, G. E. Johnson, F. M. Houlihan, E. Chin, and O. NalamasuCite this: Chem. Mater. 1995, 7, 2, 271–276Publication Date (Print):February 1, 1995Publication History Published online1 M…
Alloy melts of the intermetallic compounds FeSi and CoSi were deeply undercooled using the melt fluxing technique. Crystal-growth velocities were measured as a function of undercooling by a high-speed photosensing infrared device. The experimental results were analyzed in the framework of dendrite growth theories with…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemistry of Nonplanar Zinc(II) Tetrakis(pentafluorophenyl)porphyrinsJulia A. Hodge, Michael G. Hill, and Harry B. GrayCite this: Inorg. Chem. 1995, 34, 4, 809–812Publication Date (Print):February 1, 1995Publication History Published online1 May 2002Published inissue…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTN8: A Structure Analogous to Pentalene, and Other High-Energy Density MinimaMatthew L. Leininger, C. David Sherrill, and Henry F. III SchaeferCite this: J. Phys. Chem. 1995, 99, 8, 2324–2328Publication Date (Print):February 1, 1995Publication History Published online1 May 20…
The development of new computer technologies designed to custom-fit apparel has created a need for quantification of apparel fit characteristics. Fit perception and preference data are needed to improve sizing for ready-to-wear and custom-fitted apparel. Tactile responses of subjects to the fit of pants were investiga…