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Materials

Ceramics

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Displaying 151 - 175 of 1322

Abrasive Machining of Glass-Infiltrated Alumina with Diamond Burs

February 19, 2017
Author(s)
L Yin, L K. Ives, S Jahanmir, E D. Rekow, E Romberg
The abrasive machining characteristics of a glass-infiltrated dry-pressed alumina used for fabrication of all-ceramic dental crowns are investigated using a high-speed dental handpiece and diamond burs containing supercoarse (180 m), fine (40 m), and

ACerS-NIST Phase Equilibria Diagrams Volume XIV Oxides

February 19, 2017
Author(s)
Robert S. Roth, Terrell A. Vanderah
This volume is the fourteenth of the topically-oriented series of phase diagram compilations and the tenth to appear since the National Institute of Standards (NIST) and the American Ceramic Society (ACerS) embarked on a jointly-sponsored expanded Ceramic

An Exception to Amontons' Law: The Friction of Carbon Surfaces in Air

February 19, 2017
Author(s)
P M. McGuiggan
The friction of carbon has been of much interest in recent years due to its good tribological properties. These properties include high wear resistance, high hardness, low friction coefficients, and low corrosion. 1 In computer hard disks, the magnetic

Angular-Momentum Resolved Partial Density of States of Rutile TiO 2 : Theory and Experiment

February 19, 2017
Author(s)
Joseph Woicik, E J. Nelson, L Kronik, M Jain, J R. Chelikowsky, D Heskett, L E. Berman, G S. Herman
Using the method of site-specific valence x-ray photoelectron spectroscopy (SSVKPS), we have experimentally determined the Ti and O partial density of occupied valence states of rutile TiO2. Excellent agreement with ab initio local density approximation

Anomalous Lattice Expansion of Coherently Strained SrTiO 3 Thin Films Grown on Si(001) by Kinetically Controlled Sequential Deposition

February 19, 2017
Author(s)
Joseph Woicik, H Li, P Zschack, E Karapetrova, P Ryan, C R. Ashman, C S. Hellberg
X-ray diffraction has been used to study the epitaxy and lattice expansion of SrTiO3 thin films grown on Si(001) by kinetically controlled sequential deposition (KCSD). Unlike films grown by traditional molecular beam epitaxy (MBE), these films have an in

Applications of Ceramics for Healthcare: The Future Has Begun

February 19, 2017
Author(s)
Grady S. White
Dramatic improvements in our understanding of how biological systems work, diseases initiate, and illnesses progress have given rise to the expectation that many of these ailments can be cured, perhaps even in their precursor states, as new tools are

Assessment of Powder Characterization Methods for Advanced Ceramics

February 19, 2017
Author(s)
Lin-Sien H. Lum
This report summarizes the results of an international round robin study on advanced ceramic powders. Thirty-four laboratories from Belgium, Germany, Japan, Sweden and the U.S. representing industrial, academic and government research organizations

Boundary Lubricated Friction Experiments With Coarse Surface Texture

February 19, 2017
Author(s)
Jorn Larsen-Basse, L K. Ives, Stephen M. Hsu
Low-speed friction experiments were conducted under boundary lubrication in a pin-on-disk tester. The 304 stainless steel disk had smooth areas alternating with areas of coarse surface texture consisting of indents or macroscopic grooves, 0.3-0.4 mm in

CD ROM Guide for NIST Crystal Data NIST Standard Reference Database 3

February 19, 2017
Author(s)
Vicky L. Karen, S L. Young, Alan D. Mighell
The NIST Crystallographic Data Center collects, evaluates and disseminates data on solid-state materials. NIST Crystal Data is a comprehensive database with chemical, physical and crystallographic information on all classes of well-characterized substances

Characterization of the Mirror Region With Atomic Force Microscopy

February 19, 2017
Author(s)
Sheldon M. Wiederhorn, Jose Lopez-Cepero, Jay S. Wallace, Jean-Pierre Guin, Theo Fett
In this paper we use atomic force microscopy to investigate the roughness of the mirror region in silica glass. We demonstrate a decrease in surface RMS Roughness from about 0.5 nm to about 0.4 nm with increasing stress intensity factor (0.5KIc to about 0

Combinatorial Tools for Inorganic Thin Films

February 19, 2017
Author(s)
Peter K. Schenck, Debra L. Kaiser
We report the deveopment of a novel dual beam - dual target pulsed laser deposition (PLD) system for the production of compositionally-graded library films for combinatorial thin film materials research. In-situ process monitoring, including high-speed

Contact Area Correction for Random Surface Roughness on Nanoadhesion

February 19, 2017
Author(s)
Seung H. Yang, Huan Zhang, Stephen M. Hsu
Atomic force microscopes (AFM) have been used to measure adhesion at nanoscale between two surfaces. Colloidal probes are often utilized for such measurements because they provide much lower contact pressures and controlled contact geometry, facilitating

Contact Damage Produced in Si and MgO by Nanoindentation

February 19, 2017
Author(s)
B Hockey
TEM has been used to characterize the defect structures produced in Si and Mgo by Berkovich indentation at loads ranging from 0.1 mN to 5 mN. Plane-section observations are used to describe the nature of the defects and their spatial distribution about the

Controlled Synthesis of Single-Crystalline InN Nanorods

February 19, 2017
Author(s)
Igor Levin, Albert Davydov, O M. Kryliouk, Hyun Jong Park, YongSun Won, T J. Anderson, J P. Kim, J A. Freitas
Single-crystalline InN nanorods were successfully grown on c-Al203, GaN, and Si substrates by non catalytic, template-free hydride metal-organic vapor phase epitaxy (H-MOVPE). Stable gas-phase oligomer formation is proposed as the nucleation mechanism for
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