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Displaying records 941 to 950 of 1000 records.
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941. Measuring the Five Parameter Grain Boundary Distribution From Observations of Planar Sections
Topic: Ceramics
Published: Date unknown
Authors: D M. Saylor, B S El-Dasher, B L Adams, G S Rohrer
Abstract: A stereological method is described for estimating the distribution of grain boundary types in polycrystalline materials over the five macroscopically observable parameters on the basis of observations from a single planar section. The grain boundar ...

942. Measuring the Size Dependence of Young s Modulus Using Force Modulation Atomic Force Microscopy
Topic: Ceramics
Published: Date unknown
Authors: William J Price, C. Leighton, Stephen M. Hsu, Timothy Patten, Gang-Yu Liu
Abstract: The question of whether the Young s modulus of organic thin films depends on the size of the materials at the nanometer scale is systematically investigated. Using atomic force microscopy (AFM) based imaging and lithography, nanostructures with desi ...

943. Mechanical Properties of Aluminum Nitride Substrates
Topic: Ceramics
Published: Date unknown
Authors: Jay S Wallace, Lin-Sien H Lum
Abstract: Aluminum nitride (AlN),because of its high thermal conductivity, is seeing increased use for heat management applications of semiconductor devices. With the likelihood of large mechanical stresses, both during fabrication as well as in service, mecha ...

944. Mechanical Reliability and Life Prediction for Brittle Materials
Topic: Ceramics
Published: Date unknown
Authors: Grady S White, Lin-Sien H Lum, Stephen Weil Freiman
Abstract: This chapter is intended to provide the reader with a general understanding of why brittle materials fail in a time-dependent manner in service and how to estimate the lifetimes that can be expected for such materials. In addition, we describe proce ...

945. Micro-Texture of a BaTiO^d3^ Thin Film Fabricated by Pulsed Laser Deposition on a Pt/Ti/SiO^d2^/Si Substrate
Topic: Ceramics
Published: Date unknown
Authors: Y E Lee, Mark D Vaudin, Peter K. Schenck, B Hockey
Abstract: A BaTiO^d3^ polycrystalline thin film was fabricated by pulsed laser deposition on a Pt/Ti/SiO^d2^/Si substrate. X-ray diffraction suggested that the film contained mixed orientations of (100), (111), and (110). The microstructure and interface bet ...

946. Microstructural Control and Alignment of Template-Synthesized Gold Nanowires in Suspension
Topic: Ceramics
Published: Date unknown
Authors: Andrew John Allen, Vincent A Hackley, R Liu, S B Lee, Jan Ilavsky
Abstract: We use ultrasmall-angle X-ray scattering to measure the diameter size distributions of Au nanowires in suspension. Au nanowires are synthesized by electrodeposition in a well-ordered alumina template. The diameter distribution is quantitatively corr ...

947. Microstructural Development and Thermal Diffusivity of Al^d2^O^d3^ Thin Films Prepared by a Continuous-Dip Coating Process
Topic: Ceramics
Published: Date unknown
Authors: E J Gonzalez, B Hockey, Joseph J. Ritter
Abstract: Films of -Al2O3, 4:m to 6:m thick, have been coated onto inconel using the continuous-dip coating technique. The as-deposited films on an Inconel 600 substrate are amorphous and exhibit a thermal diffusivity of (0.0033 0.0004) cm2@s-1, a value compa ...

948. Microstructure-Wear Resistance Relationships for YSZ and Alumina Plasma Sprayed Deposits
Topic: Ceramics
Published: Date unknown
Authors: J Ilavsky, H Boukari
Abstract: A simple sectioning method was applied to investigate the changes in the wear resistance of two thermally sprayed deposits, two yttrium-stabilized zirconia (YSZ) and alumina, subjected to heat treatment. These changes were correlated with the change ...

949. Model for Adhesion-Based Energy Dissipation During Friction
Topic: Ceramics
Published: Date unknown
Authors: Michael Nosonovsky, Stephen M. Hsu
Abstract: Adhesion plays a significant role in Nanoscale interfacial friction for basically non-adhesive surfaces (no chemical bonding). The adhesion forces are composed of van der Waals forces and the contact force from surface contact. The van der Waals fo ...

950. Model for Solid-Liquid and Solid-Solid Friction of Rough Surfaces With Adhesion Hysteresis
Topic: Ceramics
Published: Date unknown
Author: Michael Nosonovsky
Abstract: Mechanisms of energy dissipation during solid-solid and solid-liquid friction are discussed. A conservative van der Waals adhesion force, when combined with surface imperfectness, such as deformation, leads to adhesion histeresis (AH). When an asperi ...

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