Processing, Mechanical Characterization, and Alkali Resistance of SiliconBoronOxycarbide (SiBOC) Glass Fibers. Issue 10 (24th July 2014)

• Record Type: Journal Article
• Authors: Nguyen, Van Lam; Proust, Vanessa; Quievryn, Caroline; Bernard, Samuel; Miele, Philippe; Soraru, Gian Domenico; Koc, R.
• Is Part Of: Journal of the American Ceramic Society. Volume 97:Issue 10(2014)
• Page Start: 3143
• Page End: 3149
• Publication Date: 2014-07-24
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.13132
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace13132-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A borosilicate sol–gel solution is synthesized using a mixture of methyltriethoxysilane, dimethyldiethoxysilane, and boric acid. SiBOC gel fibers are produced from the as‐synthesized sol–gel solution using a spinning apparatus. Subsequently, SiBOC glass fibers are prepared through pyrolysis under argon atmosphere at 1000°C and 1200°C. Mechanical properties of the SiBOC glass fibers are studied by measuring the tensile strength and the elastic modulus. The results show a high tensile strength −1300 and 1058 MPa, and a high Young modulus −79 and 95.5 GPa, for the fibers prepared at 1000°C and 1200°C, respectively. Furthermore, alkali resistance of the SiBOC fibers is investigated by measuring the tensile strength after soaking them for 20 h in NaOH and Ca(OH)₂ solutions at 100°C. For comparison, the same measurements are performed on commercial AR and E glass fibers. The SiBOC fibers show excellent alkaline resistance and perform better than commercial AR fibers. Indeed, SiBOC fibers retain 80%–90% of the initial strength after Ca(OH)₂ attack.</p> </abstract>