Deubener, Joachim

Mørup, Steen

Smedskjær, Morten Mattrup

Yue, Yuanzheng

English

    Aalborg UniversitetFormation of SiO2-Rich Surface Layer on Glass FibersSmedskjær, Morten Mattrup; Deubener, Joachim; Mørup, Steen; Yue, YuanzhengPublication date:2010Document VersionEarly version, also known as pre-printLink to publication from Aalborg UniversityCitation for published version (APA):Smedskjær, M. M., Deubener, J., Mørup, S., & Yue, Y. (2010). Formation of SiO2-Rich Surface Layer on GlassFibers. Poster presented at 2010 Glass and Optical Materials Division Annual Meeting, .General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright ownersand it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.            ? Users may download and print one copy of any publication from the public portal for the purpose of private study or research.            ? You may not further distribute the material or use it for any profit-making activity or commercial gain            ? You may freely distribute the URL identifying the publication in the public portal ?Take down policyIf you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access tothe work immediately and investigate your claim.Downloaded from vbn.aau.dk on: August 22, 2021Formation of SiO2-Rich Surface Layer on Glass Fibers  Morten M. Smedskjaer,a,* Joachim Deubener,b Steen Mørup,c and Yuanzheng Yuea  a Section of Chemistry, Aalborg University, DK-9000 Aalborg, Denmark b Institute of Non-Metallic Materials, Clausthal University of Technology, D-38678 Clausthal-Zellerfeld, Germany c Department of Physics, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark  * Corresponding author. Tel.: +45 99407240. E-mail address: morten04@bio.aau.dk   Man-made amorphous stone wool fibers are widely used for thermal and sound insulation and as a fire barrier. The applications of the glass fibers are influenced by their chemical and mechanical properties and high temperature stability (HTS). In this work, we study the surface modification of iron-bearing aluminosilicate glass fibers by using an internal diffusion process to change the chemical composition of the fiber surface. It is found that reduction of Fe3+ to Fe2+ results in diffusion of network-modifying cations from the surface toward the interior of the fibers. Consequently, a silica-rich surface layer is created. The extent of the inward diffusion increases with the degree of Fe3+ reduction, and the latter can be varied by changing the duration and temperature of the heat-treatment. We demonstrate the impact of the surface modification on the crystallization behavior, HTS, and chemical durability of the fibers.  

Formation of SiO<sub>2</sub>-Rich Surface Layer on Glass Fibers

https://vbn.aau.dk/ws/files/32306042/Abstract%20-%20Smedskjaer%20et%20al.%20-%20Poster%20-%202010%20GOMD%20Corning.pdf

Formation of SiO<sub>2</sub>-Rich Surface Layer on Glass Fibers

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