Günther Knör、Markus Leirer、Tia E. Keyes 等 4 位作者2000-04-01European Journal of Inorganic Chemistry
Re(1,2-diimine)(CO)3Cl compounds containing the p-substituted bis(arylimino)acenaphthene derivatives DIAN-R with R = H, Me, OMe, Br, and Cl were prepared and characterized. The diimine ligands of this series provide unoccupied orbitals at rather low energies and display a pronounced π-accepting strength. This feature…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Mokhtar Zabat、H. Van Damme2000-04-01Clay Minerals
Abstract The thermal energy necessary for the removal of molecular water from Li + -, Na + -, Cs + -, Mg 2+ -, Ca 2+ -, Ba 2+ -, Al x (OH) y z+ - and La 3+ -homoionic montmorillonite powders was determined by thermogravimetric analysis under atmospheric pressure. The weight loss curves and their derivatives exhibit on…
Glass properties and applicationsSoil and Unsaturated FlowClay minerals and soil interactions
N. B. Maharjan、Deepika Bhandari、N. S. Saxena 等 5 位作者2000-04-01physica status solidi (a)
Results of Differential Scanning Calorimetry (DSC) under non-isothermal condition of Se85—xTe15Sbx (x = 0, 2, 4, 6, 8 and 10) glasses are reported and discussed. The glass transition temperature at different heating rates and structural changes during glass transition have been determined from an empirical relation. T…
Phase-change materials and chalcogenidesThermal and Kinetic AnalysisChemical Thermodynamics and Molecular Structure
Jin‐Gyun Kim、Se-Jin Koo2000-04-01CORROSION
Effects of alloying elements on electrochemical properties of magnesium-based sacrificial anodes were evaluated. Potentiodynamic, galvanostatic, potentiostatic, scanning electron microscopy (SEM), and x-ray diffraction (XRD) analyses were used to investigate the corrosion rate, efficiency, and surface characteristics…
Advancements in Battery MaterialsCorrosion Behavior and InhibitionMagnesium Alloys: Properties and Applications
Tianyi Liao、Sabit Adanur2000-04-01Textile Research Journal
A circular braiding machine can be used to produce complex shapes by overbraiding a contoured mandrel and adjusting the process parameters. To simplify the design process and advance this technology, a CAD model is developed to describe the geometry of a 3D circular braid both externally and internally. A quadrilatera…
Mechanical Behavior of CompositesTextile materials and evaluationsMechanical Engineering and Vibrations Research
Meishoku Koh、S. Sawara、Tomomi Goto 等 6 位作者2000-04-01Japanese Journal of Applied Physics
It has been found that the rate of Si etching by hydrazine (N 2 H 4 H 2 O) is drastically retarded by ion-beam exposure. By utilizing this new phenomenon, a simple process of fabricating nanopyramid arrays (NPAs) on a Si surface is proposed. Two-dimensional arrays of dots and lines are written directly on a Si substra…
Silicon Nanostructures and PhotoluminescenceNanowire Synthesis and ApplicationsAnodic Oxide Films and Nanostructures
Amit Bansiwal、Prashant Anthony、S. P. Mathur2000-04-01British Corrosion Journal
Mass loss and thermometric methods have been used to study the inhibition of aluminium corrosion in HCl solution by four Schiff bases: 2-anisalidine-pyridine; 2-anisalidine-pyrimidine; 2-salicylidine-pyridine; and 2-salicylidine-pyrimidine. Values of inhibition efficiency obtained from the two methods are in good agre…
Corrosion Behavior and InhibitionConcrete Corrosion and DurabilityAntimicrobial agents and applications
S. M. Walley、William G. Proud、Philip Rae 等 4 位作者2000-04-01Review of Scientific Instruments
The temperature rise produced in iron and copper specimens by high strain deformation in a compression split Hopkinson pressure bar was measured simultaneously using two independent techniques: (i) small thermocouples (0.2 mm junction size) and (ii) an infrared (IR) camera system based on mercury cadmium telluride (sp…
Energetic Materials and CombustionHigh-Velocity Impact and Material BehaviorElectromagnetic Launch and Propulsion Technology
Kenny Ståhl2000-04-01Journal of Applied Crystallography
A Huber G670 imaging-plate Guinier powder diffraction camera has been tested at an X-ray synchrotron source. It was found to be a very potent tool, offering an unusual combination of high angular resolution and short data collection time, while using very small amounts of sample. Specifically, it was found that: (i) t…
Machine Learning in Materials ScienceNuclear Physics and ApplicationsX-ray Diffraction in Crystallography
Peter Sondergeld、W. Schranz、A.V. Kityk 等 5 位作者2000-04-01Phase Transitions
Lawsonite crystals have been investigated by dilatometry and dynamic mechanical analysis as well as by measurements of the optical birefringence and the dielectric constant in the temperature range 90K ≤T ≤ 633K. Two successive phase transitions have been found at low temperatures. The analysis of the spontaneous stra…
Crystal Structures and PropertiesAcoustic Wave Resonator TechnologiesSolid-state spectroscopy and crystallography
S. Z. Chu、M. Sakairi、Hiroki Takahashi2000-04-01Journal of The Electrochemical Society
Local deposition of copper on aluminum was attempted by the successive processes of anodizing, laser irradiation, and electroless plating. Aluminum specimens covered with anodic oxide films were immersed in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="ML1" overflow="scroll"> <mml:msup>…
Electrodeposition and Electroless CoatingsCopper Interconnects and ReliabilityAnodic Oxide Films and Nanostructures
D. A. Holmes2000-04-01Journal of Industrial Textiles
The effect of atmospheric conditions on the water vapour permeability characteristics of waterproof breathable fabrics has been studied. Several types of waterproof breathable fabrics were tested for vapour permeability under a wide range of atmospheric temperatures and relative humidities. It was found that atmospher…
Surface Modification and SuperhydrophobicityTextile materials and evaluationsMaterial Properties and Processing
Anthony J. O’Lenick2000-04-01Journal of Surfactants and Detergents
Abstract The objective of this review is to provide a working knowledge of the chemistry of silicone compounds to the practicing chemist. Although silicone compounds have been known for over 50 yr, the chemistry of these materials remains elusive to the average formulating chemist. This is indeed unfortunate, since th…
Mesoporous Materials and CatalysisDiatoms and Algae ResearchSilicone and Siloxane Chemistry
William T. A. Harrison、J.H.N. Buttery2000-04-01Zeitschrift für anorganische und allgemeine Chemie
Synthetic Cs(VO2)3(TeO3)2 is built up from infinite sheets of distorted octahedral VVO6 groups, sharing vertices. These octahedral layers are “capped” by Te atoms (as parts of pyramidal [TeIVO3]2– groups) on both faces of each V/O sheet, with inter-layer, 12-coordinate, Cs+ cations providing charge compensation. Cs(VO…
Zeolite Catalysis and SynthesisCrystal Structures and PropertiesCatalysis and Oxidation Reactions
W. Y. Ching、Ming‐Zhu Huang、Shang‐Di Mo2000-04-01Journal of the American Ceramic Society
The α‐ and β‐SiAlONs are ceramic solid solutions with charge‐neutral substitutions in α‐ and β‐Si 3 N 4 . They have high potential for applications as structural materials. We have calculated the electronic structure and bonding of β‐Si 6— z Al z O z N 8— z for z = 0, 1, 2, 3, 4 using a first‐principles method. Total…
Advanced ceramic materials synthesisSemiconductor materials and devicesMXene and MAX Phase Materials
S. C. Nyburg、Jonathan W. Steed、Slobotka Aleksovska 等 4 位作者2000-04-01Acta Crystallographica Section B Structural Science
The crystal structures at room (296 K) and low (173 K) temperature of several alpha-alums have been refined by single-crystal X-ray structure analysis. Many alpha-alums of known structure are disordered, the sulfate anions occupying one of two possible sites. All those studied here exhibited such disorder and the rela…
Crystal Structures and PropertiesSolid-state spectroscopy and crystallographyInorganic Fluorides and Related Compounds
Diana Farkas2000-04-01Philosophical Magazine Letters
The mechanisms of failure of symmetrical tilt boundaries have been investigated using an atomistic technique. The fracture process advances in steps that are related to the structural unit of the symmetrical tilt grain boundary. These boundaries are shown to fail through a combined mechanism involving dislocation emis…
Microstructure and mechanical propertiesMetal and Thin Film MechanicsMicrostructure and Mechanical Properties of Steels
José F. Barrenechea、M. Rodas、Martin Frey 等 5 位作者2000-04-01Clays and Clay Minerals
Abstract The distribution and crystal-chemical characteristics of chlorite, corrensite, and mica in samples from a stratigraphic profile in the Cameros basin are controlled by changes in the sedimentary facies. The lacustrine marls and limestones from the base and the top of the profile contain quartz + calcite + illi…
Geological and Geochemical AnalysisClay minerals and soil interactionsGeological and Geophysical Studies Worldwide
Reji Thomas、D. C. Dube2000-04-01Japanese Journal of Applied Physics
Transparent strontium titanate thin films were prepared on fused silica substrate by spin-on sol–gel process using strontium 2-ethyl hexanoate and titanium isopropoxide as precursors in ethanol medium. The lattice constants of crystalline films were a = b = c =3.91 Å. Optical constants of the films in amorphous and po…
Ferroelectric and Piezoelectric MaterialsPhotorefractive and Nonlinear OpticsElectronic and Structural Properties of Oxides
Nikolla Qafoku、Malcolm E. Sumner、L. T. West2000-04-01Communications in Soil Science and Plant Analysis
Colloidal mineralogy is one of the main characteristics of the steady state reached in developed soils. Surface charge and other chemical and physical properties of the soil depend on colloidal mineralogy. It is, therefore, very important to further investigate the clay mineralogy of acidic variable charge subsoils in…
Soil and Unsaturated FlowClay minerals and soil interactionsIron oxide chemistry and applications