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Displaying 1 - 25 of 1898

Influence of Calcium Hydroxide Dissolution on the Transport Properties of Hydrated Cement Systems

January 1, 2001
Author(s)
J Marchand, Dale P. Bentz, E Samson, Y Maltais
… Calcium hydroxide is one of the main reaction products resulting from … found in hydrated cement systems. The influence of calcium hydroxide dissolution and its effect on the diffusion … Numerical simulations clearly indicate that calcium hydroxide dissolution contributes to a marked increase in the …

Gas Phase Thermochemistry of Iron Oxides and Hydroxides: Portrait of a Super-Efficient Flame Suppressant

November 1, 1999
Author(s)
C B. Kellogg, Karl Irikura
… Halon (CF 3 Br) replacements, several metals, including iron, have been identified as super-efficient flame … for the species that are thought to be most important in iron's flame chemistry, a more complete and accurate … of the thermochemistry of iron oxides, hydrides and hydroxides is required to improve kinetic flame models. In …

Layered Double Hydroxides as Cation Exchange Materials

October 12, 2021
Author(s)
Paul Braterman, Nandika A. D'Souza, Jeffrey W. Gilman, Mickey C. Richardson, Laxmi K. Sahu, Mauro Zammarano
… Layered double hydroxides (LDH) are a class of materials formally related to brucite-like hydroxides by the incorporation of higher valent cations, … of M(II), and that those metals giving the most insoluble hydroxides also gave rise to the most insoluble LDH. This led …

Control of Micro-and Nanostructure of Layered Double Hydroxides by Hydrothermal Treatment

February 23, 2023
Author(s)
Keiichiro Maegawa, Fan Zhang, Qiaxian Johnson, Mihaela Jitianu, Tan Wai Kian, Go Kawamura, Atsunori Matsuda, Andrei Jitianu
… Layered double hydroxides (LDHs) are mixed M(II) and M(III) hydroxides with positively charged lamellar brucite layers … Microstructure, Layered double hydroxides, structure characterization, small angle scattering … Control of Micro-and Nanostructure of Layered Double Hydroxides by Hydrothermal Treatment …

The Relationship Between Microstructure and Mechanical Properties of Late 19th/Early 20th Century Wrought Iron Using the Generalized Method of Cells Model

March 1, 2002
Author(s)
J J. Hooper, L Graham, Timothy J. Foecke, Timothy P. Weihs
… for the application. However, the quality of the wrought iron rivets may have been an important factor in the opening … during flooding. Preliminary studies of Titanic wrought iron rivets revealed an orthotropic, inhomogeneous composite material composed of glassy iron silicate (slag) particles embedded in a ferrite matrix. …

New Insights Into the Effect of Calcium Hydroxide Precipitation on the Kinetics of Tricalcium Silicate Hydration

July 8, 2010
Author(s)
Jeffrey W. Bullard, Robert J. Flatt
… frequently terminates at about the same time that calcium hydroxide first precipitates from the solution. The close … these two events led to an early theory that calcium hydroxide precipitation actually triggers a period of … one the implications of suppressing the growth of calcium hydroxide formation. Each hypothesized mechanism leads to …

Stoichiometry of Slag Hydration With Calcium Hydroxide

April 1, 2002
Author(s)
J M. Richardson, Joseph J. Biernacki, Paul E. Stutzman, Dale P. Bentz
… an empirical formula of C 7. d88^ S 7.39 and calcium hydroxide (CH) was investigated. Scanning electron microscopy … calcium hydroxide, calcium silicate hydrate, cement, kinetics, … Stoichiometry of Slag Hydration With Calcium Hydroxide …

Formation of Extended Ionomeric Network by Bulk Polymerization of L,D-lactide with Layered Double Hydroxide

November 22, 2012
Author(s)
Edward D. McCarthy, Mauro Zammarano, Douglas M. Fox, Ryan Nieuwendaal, Yeon S. Kim, P H. Maupin, Paul C. Trulove, Jeffrey W. Gilman
… in the presence of magnesium/aluminium layered-double-hydroxide (LDH) without added catalyst. The effect of LDH … Nanocomposite, polylactide, layered double hydroxide, polymer, interface … by Bulk Polymerization of L,D-lactide with Layered Double Hydroxide …

Improved Cr II log(gf) values and abundance determinations in the photospheres of the Sun and metal-poor star HD 84937

January 20, 2017
Author(s)
James E. Lawler, Chris Sneden, Gillian Nave, E. A. Den Hartog, N Emrahoglu, John J. Cowan
… for 183 lines of the second spectrum of chromium (Cr II) and new radiative lifetime measurements from laser … still modern, transition probability measurements in Cr II and reconcile Solar and stellar Cr abundance values based on Cr I and Cr II lines. A total of 18 spectra from three Fourier Transform …

PROMOTION OR INHIBITION OF HYDROGEN-AIR IGNITION BY IRON-CONTAINING COMPOUNDS

July 1, 2008
Author(s)
Gregory T. Linteris
… mixtures near 1000 K was studied, for varying amounts of iron additives. Depending on the initial conditions, the addition of iron pentacarbonyl promotes or inhibits the ignition of hydrogen/air mixtures. The simulations show that iron compounds at 1 υL/L reduce the ignition delay by about …

Mechanical Properties of Hot Isostatically Pressed Nanograin Iron and Iron Alloy Powders

January 1, 2001
Author(s)
A Munitz, Richard J. Fields
… isostatic pressing (hipping) was performed on a variety of iron and iron alloy powders produced by attrition ball milling. … density depends on the initial powder composition. While iron powder processed in argon (Fe[Ar]) reached a maximum … consolidation, hot isostatics, iron alloys, mechanical properties, nanoscale, powder, …

ATMP-Stabilized Iron Nanoparticles: Chelator-Controlled Nanoparticle Synthesis

November 1, 2014
Author(s)
Lauren F. Greenlee, Nikki S. Rentz, Roy H. Geiss
… Iron nanoparticles are of interest in fields such as water … properties and low cost. When combined with other metals, iron-metal nanoparticles can act as catalysts for a diverse … stabilizers, and in this study, we characterize iron nanoparticles synthesized in water in the presence of a …

Metallurgical Analysis of Wrought Iron From the RMS Titanic

April 1, 2003
Author(s)
J J. Hooper, Timothy J. Foecke, L Graham, Timothy P. Weihs
… Instead, it was suggested that the quality of the wrought iron rivets may have been an important factor in the opening … during flooding. Here the quality of RMS Titanic wrought iron is examined and compared to contemporary wrought iron obtained from additional late 19th/early 20th century …

Reduction of Cobalt and Iron Corroles and Catalyzed Reduction of CO 2

May 1, 2002
Author(s)
J Grodkowski, Pedatsur Neta, E Fujita, A Mahammed, L Simkhovich, Z Gross
… The role of cobalt and iron corroles in catalytic CO 2 reduction has been studied. … finding that the M I oxidation states of the cobalt and iron corroles can react with CO 2 is in contrast with the … CO 2 reduction, cobalt, corroles, electrochemistry, iron, photochemistry …

Pb(II) Adsorption on Isostructural Hydrated Alumina and Hematite (0001) Sur faces: A DFT Study

January 20, 2009
Author(s)
Sara E. Mason, Christopher R. Iceman, Kunaljeet Tanwar, Thomas P. Trainor, Anne M. Chaka
… density functional theory (DFT) calculations show that Pb(II) binds more strongly (by $\approx$30\%) to hematite than … the partially occupied Fe d-band. Site preference for Pb(II) adsorption on alumina is shown to depend strongly on the … Pb(II) Adsorption on Isostructural Hydrated Alumina and Hematite …

The Metallurgical Analysis of Wrought Iron from the RMS Titanic

September 1, 2003
Author(s)
J J. Hooper, Timothy J. Foecke, L Graham, Timothy P. Weihs
… the variation in the mechanical properties of wrought iron as a function of its microstructure. Thousands of … order to predict the local mechanical behavior of wrought iron as a function of microstructure. … Generalized Method of Cells, image analysis, wrought iron …

Microstructural Evolution of Pd-doped Nanoscale Zero-valent Iron (nZVI) Particles in Aqueous Media and Implications for Particle Reactivity

May 6, 2010
Author(s)
Andrew A. Herzing, Weile Yan, Christopher J. Kiely, Wei-xian Zhang
… Palladized zero-valent iron nanoparticles have been frequently employed to achieve … In this work, structural evolution of palladized nanoscale iron particles (Pd-nZVI, with Pd at 1.5 wt%) was examined … adopt a core-shell structure consisting of a metallic iron core and a thin amorphous oxide shell, and that Pd is …

Magnetic order of the iron spins in NdFeAsO

August 21, 2008
Author(s)
Ying Chen, Jeffrey Lynn, Jiying Li, G. J. Li, G. F. Chen, J. L. Luo, N. L. Wang, Pengcheng Dai, Clarnia dela Cruz, H. A. Mook
… measurements have been carried out to investigate the iron magnetic order in undoped NdOFeAs. Antiferromagnetic … in-plane spin arrangement as observed in all the other iron oxypnictide materials. Nearest-neighbor spins along the … diffraction, magnetic order, magnetic phase transition, iron-based superconductor, itinerant electron magnet …

Development of stabilized zero valent iron nanoparticles

January 31, 2012
Author(s)
Lauren F. Greenlee, Stephanie A. Hooker
… on the development and characterization of zero valent iron (ZVI) nanoparticles to improve nanoparticle design and … The focus of this study was to evaluate two different iron salts as starting materials and evaluate three different … Nanoparticle, zero valent iron, disinfection by-products, stabilizer, carboxymethyl …

In Situ Raman Spectroscopic Investigation of Aqueous Iron Corrosion at Elevated Temperatures and Pressures

July 1, 2000
Author(s)
James E. Maslar, Wilbur S. Hurst, Walter J. Bowers Jr., Jay H. Hendricks, M I. Aquino-Class
… In situ Raman spectroscopy was employed to investigate iron corrosion in air-saturated water at a pressure of 25.1 … depending on the location on or temperature of the iron coupon. In some cases, different species were observed … aqueous corrosion, in situ optical spectroscopy, iron, iron oxides, Raman spectroscopy, supercritical water …

Effect of Iron Vacancies on Magnetic Order and Spin Dynamics of the Spin Ladder BaFe 2-d S 1.5 Se 1.5

June 13, 2022
Author(s)
Zengjia Liu, Xiao-Sheng Ni, Lisi Li, Hualei Sun, Feixiang Liang, Benjamin Frandsen, Andrew D. Christianson, Clarina dela Cruz, Zhijun Xu, Dao-Xin Yao, Jeffrey Lynn, Robert J. Birgeneau, Kun Cao, Meng Wang
… Quasi-one-dimensional iron chalcogenides possess various magnetic states depending … on the spin ladder compound BaFe 2-δ S 1.5 Se 1.5 with ∼6% iron vacancies. The data reveal that long-range magnetic … which is greatly enhanced for a certain concentration of iron vacancies, which we calculate to be about 6%, consistent …

Interfacial Alloying Contributions to the Magnetic Proximity Effect in Pt/Dysprosium Iron Garnet

August 12, 2025
Author(s)
Miela J. Gross, Javier Herrero-Martin, Sergio Valencia, Alexander Grutter, Julie Borchers, Yongseong Choi, Gilberto Fabbris, Allison Kaczmarek, Alexander E. Kossak, Jackson Bauer, Subhajit Kundu, Supriya Ghosh, K. A. Mkhoyan, Angela Wittmann, Caroline A. Ross
… thin film heterostructures, but for HM/rare earth iron garnet interfaces the presence and magnitude of the MPE … debated. We previously reported an MPE in a Pt/dysprosium iron garnet (DyIG) heterostructure grown without breaking … Polarized neutron reflectivity, magnetic proximity, Iron garnets …
Displaying 1 - 25 of 1898
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