TITLE

Density and microhardness of glasses in the SrO-B2O3-SiO2 system

AUTHOR(S)
N. Tyurnina; Z. Tyurnina; S. Sviridov
PUB. DATE
April 2009
SOURCE
Glass Physics & Chemistry;Apr2009, Vol. 35 Issue 2, p153
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Abstract  The density d at a temperature of 25°C is measured by the hydrostatic weighing method, the Vickers microhardness H V is determined, and the fluctuation free volume fraction f g is calculated for glasses in the SrO-B2O3-SiO2 system with a constant strontium oxide content in the range from 35 to 45 mol %. It is demonstrated that the quantities H V and f g decrease and the density d increases with an increase in the SrO content.
ACCESSION #
39058736

 

Related Articles

  • Density Coordinate Mixed Layer Models. Dewar, William K. // Monthly Weather Review;Feb2001, Vol. 129 Issue 2, p237 

    Presents a study on the development of mixed layer models in density coordinates. Background of the study; Details on the numerical examples provided in the study; Discussion.

  • On being dense. De Grasse Tyson, Neil // Natural History;Jan96, Vol. 105 Issue 1, p66 

    Discusses various aspects of the scientific concept of density. Humorous aspects of the concept; Consideration of the relative densities of different objects; Density of the Earth; Focus on astrophysics in the study of planetary science; Fluctuations of the Hubble constant.

  • New Approach for Solving Master Equations of Density Operators for the Raman-Coupled Model with Cavity Damping. Xu, Ye-Jun; Yuan, Hong-Chun; Song, Jun; Liu, Qiu-Yu // International Journal of Theoretical Physics;Sep2010, Vol. 49 Issue 9, p2180 

    By virtue of the thermo entangled state representation, in which one mode is fictitious accompanying the system mode, we exhibit a novel approach to deriving density operator for a Raman-coupled model with damping of the cavity mode. The normal ordering forms of density matrix elements can be...

  • Conditionally specified continuous distributions. Yuchung J. Wang; Edward H. Ip // Biometrika;Sep2008, Vol. 95 Issue 3, p735 

    A distribution is conditionally specified when its model constraints are expressed conditionally. For example, Besags (1974) spatial model was specified conditioned on the neighbouring states, and pseudolikelihood is intended to approximate the likelihood using conditional likelihoods. There are...

  • Competition and facilitation within and between a snail and a mayfly larva and the effect on the grazing process. Pia Hertonsson; Kajsa Åbjörnsson; Christer Brönmark // Aquatic Ecology;Dec2008, Vol. 42 Issue 4, p669 

    Abstract  We studied the competitive effects within and between two taxonomically distant freshwater herbivores, a snail and a mayfly, common in Swedish lakes, Lymnaea peregra and Cloeon dipterum, respectively, and their effect on grazing in a laboratory experiment. The experimental set-up...

  • A light refractory concrete for thermal insulation. Kashcheev, I.; Sychev, S.; Dunaeva, M.; Karpets, L.; Emel’yanov, P.; Ryakhova, O. // Refractories & Industrial Ceramics;Mar2008, Vol. 49 Issue 2, p131 

    Compositions have been developed for nonshrinking vibrocast thermally insulating light refractory concretes with densities of 1.0, 1.3, 1.5, and 1.8 g/cm3 for temperatures of use up to 1400°C. The structure and properties have been examined for the concrete of density 1.3 g/cm3.

  • Manufacturing and Characterization of 18Ni Marage 300 Lattice Components by Selective Laser Melting. Contuzzi, Nicola; Campanelli, Sabina L.; Casavola, Caterina; Lamberti, Luciano // Materials (1996-1944);Aug2013, Vol. 6 Issue 8, p3451 

    The spreading use of cellular structures brings the need to speed up manufacturing processes without deteriorating mechanical properties. By using Selective Laser Melting (SLM) to produce cellular structures, the designer has total freedom in defining part geometry and manufacturing is...

  • ISA Certified Control Systems Technician (CCST) Program. Sheble, Nicholas // InTech;Jul2004, Vol. 51 Issue 7, p19 

    This article provides information on specific gravity. It is the ratio of the density of a solid or liquid to the density of water at 4° centigrade. It also refers to the ratio of the density of a gas to the density of dry air at standard temperature and pressure.

  • It's Chemical: Phase Changes. Friedman, A.L. // School Library Journal;Jun90, Vol. 36 Issue 6, p84 

    Reviews the videotape 'It's Chemical: Phase Changes,' by HRM.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics