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    Strength and Microscopy Analysis of Surface-modified Soda-lime-silicate Glass Rods

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    Date
    2015-01-01
    Author
    Bumbaco, Amy
    Young, Jacob
    Zachar, Michael
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    Abstract
    Glass has high theoretical strength; however, microcracks on the surface of the glass greatly decrease the strength. Various methods to alleviate the effects of these cracks have been devised, including ion-exchange, mechanical abrasion, and acid etching. The goal of this experiment was to compare these methods by quantifying the strength via three-point bend testing to determine the modulus of rupture. Optical microscopy confirmed results, including the data that indicated that ion-exchange had the largest effect on strength by either widening or forcing shut cracks. Acid etching produced a moderate improvement in modulus of rupture by smoothing cracks. Finally, mechanical abrasion decreased strength but provided a more uniform strength distribution.
    URI
    http://hdl.handle.net/10919/90353
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    • Journal of Undergraduate Materials Research [61]

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