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Titelei

作者信息未提供1991-10-01Applied Rheology

Metal Clusters

M Moskovits1991-10-01Annual Review of Physical Chemistry

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

Machine Learning in Materials ScienceElectron and X-Ray Spectroscopy TechniquesNanocluster Synthesis and Applications

Synthesis of Mullite Whiskers and Their Application in Composites

Kiyoshi Okada、Nozomu Ōtuska1991-10-01Journal of the American Ceramic Society

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…

Intermetallics and Advanced Alloy PropertiesMicrowave Dielectric Ceramics SynthesisAdvanced ceramic materials synthesis

Mathematical methods in small-angle scattering data analysis

Dmitri I. Svergun1991-10-01Journal of Applied Crystallography

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…

Enzyme Structure and FunctionAdvanced NMR Techniques and Applications

Fabrication of Mullite and Mullite‐Matrix Composites by Transient Viscous Sintering of Composite Powders

Michael D. Sacks、Nazim Bozkurt、Gary W. Scheiffele1991-10-01Journal of the American Ceramic Society

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…

Advanced materials and compositesAdvanced ceramic materials synthesisAluminum Alloys Composites Properties

Rare‐Earth Element Reference Samples for Electron Microprobe Analysis

E. Jarosewich、L. A. Boatner1991-10-01Geostandards and Geoanalytical Research

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…

Electron and X-Ray Spectroscopy TechniquesX-ray Spectroscopy and Fluorescence AnalysisRadioactive element chemistry and processing

Numerical Analysis of a Continuum Model of Phase Transition

Qiang Du、R. A. Nicolaides1991-10-01OpenAlex

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…

Solidification and crystal growth phenomenaAdvanced Mathematical Modeling in EngineeringDifferential Equations and Numerical Methods