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Rheologische Eigenschaften assoziativer Verdicker in waßrigen Beschichtungsstoffen / Rheological properties of associative thickeners in water-based coatings
Druckschriften / Literature
Metal Clusters
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
Synthesis of Mullite Whiskers and Their Application in Composites
Mullite whiskers were synthesized by a vapor‐solid reaction. Mullite composition xerogels were fired at 900° to 1600°C with AlF 3 in an airtight container. An average whisker increased in length from 7 μm at 1100°C to 10 μm at 1600°C, whereas an average whisker decreased in aspect ratio from 25 to 10 with increased fi…
Mathematical methods in small-angle scattering data analysis
Applications of modern mathematical methods to the problems of small-angle scattering data treatment and interpretation are considered. Special possibilities in data treatment, namely simultaneous treatment of data sets obtained with different experimental conditions and joint data processing for the anomalous-dispers…
Fabrication of Mullite and Mullite‐Matrix Composites by Transient Viscous Sintering of Composite Powders
Mullite was fabricated by a process referred to as transient viscous sintering (TVS). Composite particles which consisted of inner cores of α‐alumina and outer coatings of amorphous silica were used. Powder compacts prepared with these particles were viscously sintered to almost full density at relatively low temperat…
Rare‐Earth Element Reference Samples for Electron Microprobe Analysis
Fourteen rare‐earth (plus scandium and yttrium) orthophosphates have been synthesized and characterized for use as electron microprobe reference samples. These reference samples are single‐element phosphates that are homogeneous, stable under the electron beam, and free of interfering elements. They have a stoichiomet…
Numerical Analysis of a Continuum Model of Phase Transition
A method for solution of the Cahn–Hilliard equation is presented. Unlike previous work, the discrete equations for the new method possess a Lyapunov function. This makes it possible to prove convergence of the approximate solutions without assumptions beyond those necessary for existence and uniqueness of the differen…
Photodoping of amorphous chalcogenides by metals
The present paper reviews the results of experimental investigations of the photodoping of amorphous chalcogenides by metals, and in particular by silver. The kinetics of the photodissolution of the metal are described as also is the influence on the photodissolution rate of such factors as the wavelength and intensit…
Moisture absorption characteristics of organosiloxane self-assembled monolayers
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMoisture absorption characteristics of organosiloxane self-assembled monolayersDavid L. Angst and Gary W. SimmonsCite this: Langmuir 1991, 7, 10, 2236–2242Publication Date (Print):October 1, 1991Publication History Published online1 May 2002Published inissue 1 October 1991ht…
Phase Separation in Gelling Silica–Organic Polymer Solution: Systems Containing Poly(sodium styrenesulfonate)
Phase separation which occurs in parallel to the hydrolysis and gelation of alkoxysilane solution containing poly(sodium styrenesulfonate) (NaPSS) has been investigated. Depending on the reaction conditions, gel morphologies such as isolated pores, particle aggregates, and interconnected continuous pores from 0.1 to 1…
Surface Raman scattering of self-assembled monolayers formed from 1-alkanethiols: behavior of films at gold and comparison to films at silver
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface Raman scattering of self-assembled monolayers formed from 1-alkanethiols: behavior of films at gold and comparison to films at silverMark A. Bryant and Jeanne E. PembertonCite this: J. Am. Chem. Soc. 1991, 113, 22, 8284–8293Publication Date (Print):October 1, 1991Pub…
Alpha-decay event damage in zircon
Based on density measurements, X-ray diffraction analysis, and high-resolution trans-mission electron microscopy of a suite of natural zircon samples from Sri Lanka (0.06 xl0r5 to 6.3 x l0rs a-decay events/mg), three stages of damage accumulation may bedelineated. Stage I ( 8 x 10'5 a-decayevents/mg) consists of mater…
Crack propagation in b.c.c. crystals studied with a combined finite-element and atomistic model
A new method for combined finite-element and atomistic analysis of crystal defects has been developed. The coupling between the atomistic core and the surrounding continuum is described in terms of non-local elasticity theory. Static and dynamic tests demonstrate the satisfactory performance of this method. The model…
Mullite for Structural, Electronic, and Optical Applications
Mullite (3Al 2 O 3 ·2SiO 2 ) is becoming increasingly important in electronic, optical, and high‐temperature structural applications. This paper reviews the current state of mullite‐related research at a fundamental level, within the framework of phase equilibria, crystal structure, synthesis, processing, and properti…