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Tuesday, July 28, 2020 | History

2 edition of mechanical strength of alkali-aluminosilicate glasses after ion exchange found in the catalog.

mechanical strength of alkali-aluminosilicate glasses after ion exchange

A. J. Burggraaf

mechanical strength of alkali-aluminosilicate glasses after ion exchange

by A. J. Burggraaf

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Published by Philips Research Laboratories; distributed by Uitgeversmaatschappij Centrex in [Eindhoven .
Written in English

    Subjects:
  • Glass -- Testing.

  • Edition Notes

    Other titlesAlkali-aluminosilicate glasses after ion exchange.
    Statementby A. J. Burggraaf.
    SeriesPhilips research reports. Supplements,, 1966, no. 3
    Classifications
    LC ClassificationsQ1 .P472 1966, no. 3
    The Physical Object
    Pagination106 p.
    Number of Pages106
    ID Numbers
    Open LibraryOL5597304M
    LC Control Number68003087

    This value is somewhat larger than the layer spacing between the main edge-sharing TiO 6 sheets reported for sodium titanate nanosheets, Na 4 Ti 9 O 20 nH 2 O, with an average interlayer spacing of Å. 8 After ion-exchange with Sr 2+, the crystallinity of the titanate did not change significantly, but the formation of a fraction of SrCO 3. USA USA USA US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords glass hours glasses strength abrasion Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

      1. An alkali aluminosilicate glass article having substantially increased strength after being subjected to surface abrasion, said article containing ions of an alkali metal and of a monovalent metal of larger size selected from the group consisting of the alkali metals, copper, and silver and having a surface compressive stress layer of a depth of at least 5 microns, the concentration of the.   The aim of this study is to determine the mechanical properties differences in between the air and tin surfaces of thin soda-lime silicate float glasses that subjected to ion exchange using KNO3 salt bath. The ion exchange process was carried out at different times and temperatures. Chemically tempered glasses were investigated by means of compressive stress (CS), .

    The aim of this study is to determine the mechanical properties differences in between the air and tin surfaces of thin soda-lime silicate float glasses that subjected to ion exchange using KNO3. The mechanical strength of alkali-aluminosilicate glasses after ion exchange. By AJ Burggraaf. Topics: dissertations the and tu/e, materials science: dissertations, glass (general).


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Mechanical strength of alkali-aluminosilicate glasses after ion exchange by A. J. Burggraaf Download PDF EPUB FB2

The mechanical strength of alkali-aluminosilicate glasses after ion exchange Citation for published version (APA): Burggraaf, A. The mechanical strength of alkali-aluminosilicate glasses after ion by: 5. The mechanical strength of alkali-aluminosilicate glasses after ion exchange.

[A J Burggraaf] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for Contacts Search for a Library. Create Book\/a>, schema:CreativeWork\/a>, bgn.

İpek Erdem, Duygu Guldiren, Suheyla Aydin, Chemical tempering of soda lime silicate glasses by ion exchange process for the improvement of surface and bulk mechanical strength, Journal of Non-Crystalline Solids, /ysol,(), ().Cited by: The glass retains more of its strength even after a minor nick or scratch, protecting it from more cracks and flaws.

Some advanced glasses have special compositions that help mitigate this possibility — but it’s the super-tough surface created by the ion exchange process that provide the first line of defense against everyday hazards. The improvement in mechanical performance, specifically retained strength, for such glasses is achieved by composition design and ion exchange post-processing.

The main physical effects to be considered are the introduction of residual stress profiles and refractive index : Guglielmo Macrelli, Arun K.

Varshneya, John C. Mauro. For glasses containing 15 mol% of Al 2 O 3 the Na/K exchange ratio is nearly equal to 1, while this rate is close to for the glasses without alumina and ion-exchanged at °C. As reported in previous studies [14], [25], [26], the exchange rate at the surface depends on the thermodynamic activity of the molten salt at the surface.

Deformation of alkali aluminosilicate glass during scratch process is investigated. • Friction coefficient reduces with increasing the elasticity of glass substrates.

• Role of each element in response to applied stress during scratching is identified. • Response of alkali elements to applied stress changes dramatically by ion exchange. Ion-exchange processes between melt and glass surface were performed highly intensively during the 70s of the last century inconnection with the modifying of some properties of the glasses: increasing of mechanical strength, chemical resistance[] photochromic properties[9], opticalabsorption andcolouring[].

This study aims to investigate the ion exchanged soda lime glasses in terms of their physical and mechanical properties. By the motivation of preparing mechanically strengthened glass also representing antimicrobial property, commercial soda lime glass was subjected to ion exchange treatment using AgNO 3 KNO 3 mixed salt bath.

Ion exchange treatment was performed using. The present disclosure relates to an alkali-aluminosilicate glass which contains between and 55 wt.% SiO2, between 21 and % Al2O3; and between 12 and 16 wt.% Na2O. The molar ratio of Al2O3 and Na2O amounts to between and This glass is characterized by high hardness and high surface strengths after its chemical toughening, whereby the resulting extremely high scratch.

glass strength, chemical strengthening by ion exchange is increasing its range of applications and the ov erall quantity of strengthened glass articles by Ion Exchange is becoming significantly wider. 1. Introduction. In recent years, rare earth (RE) doped glasses have attracted widespread interest due to their excellent mechanical (high modulus of elasticity and hardness) and optical (high transmittance) properties [,, ].As one type of reinforcing material, the improvement of mechanical properties has always been one of the most important directions in the development of glasses.

Alkali aluminosilicate glasses. The Al 2 O 3 content of alkali aluminosilicate glasses is typically % and the alkali content over 10%. The high alkali content prepares the glass for ion exchange with bigger alkali ions in order to improve the surface compressive strength. Due to this particular feature, this glass type is especially.

İpek Erdem, Duygu Guldiren, Suheyla Aydin, Chemical tempering of soda lime silicate glasses by ion exchange process for the improvement of surface and bulk mechanical strength, Journal of Non-Crystalline Solids, /ysol,(), ().

This invention relates to the strengthening of glass articles through an ion exchange process wherein alkali metal ions in a surface of a glass article are replaced by larger monovalent metal ions. In carrying out the process, a surface of the glass article is contacted with a source of the larger monovalent ions at an elevated temperature below the strain point of the glass for a sufficient.

Systematic doping of pure molten KNO3 bath by sodium nitride was used to analyze the effect of salt poisoning on the mechanical performances of chemically tempered soda-lime-silicate float glass.

The ion-exchange process appears partially influenced by the presence of limited amount of Na in the potassium nitride bath. The interdiffusion coefficient and the penetration depth of K are invariant. Characterised by its exceptional resistance to high temperature and chemical exposure, aluminosilicate glass has become useful in numerous industrial, commercial, and personal applications.

This mineral-based material contains % silicon dioxide (SiO 2) and % aluminium dioxide (Al 2 O 3), along with small amounts of % lime (CaO), % magnesium oxide (MgO), boron trioxide (B 2 O. The first technique is thermal or chemical treatment [7][8][9].

The second technique is ion-exchange, which consists in displacing small alkali metal ions from the surface layer of heated glass by.

T.M. Gross: Scratch damage in ion-exchanged alkali aluminosilicate glass: Crack evolution and the dependence of lateral cracking threshold on contact geometry. In: Fractography of Glasses and Ceramics VI, ed.

by J.R. Varner, M. Wightman (Wiley, New Jersey ) pp. USA USDA USA US A US A US A US D A USD A US DA US A US A US A Authority US United States Prior art keywords glass glasses ion exchange zro strengthening Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

(a) Vickers hardness as a function of the concentration of P2O5 at room temperature before and after ion-exchange treatment; (B) images of the indentations of ion-exchanged glasses after .A. Burggraaf, “Mechanical strength of alkali aluminosilicate glasses after ion exchange,” in Strength of Glasses, V.

A. Stepahov, ed. (Mir, Moscow, ), pp. – Cited By OSA participates in Crossref's Cited-By Linking service. Chemical strengthening of aluminosilicate glasses through K+–Na+ ion exchange has attracted tremendous attentions because of the accelerating demand for high strength and damage resistance glasses.

However, a paramount challenge still exists to fabricate glasses with a higher strength and greater depth of ion-exchange layer (DOL).

Herein, aluminosilicate glasses with .