Tribology Online
Online ISSN : 1881-2198
ISSN-L : 1881-218X
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Bending Strength Dependence of Fractoluminescence Intensity in Silica Glass, Single Crystal and Polycrystalline MgO
Tadashi ShiotaKouichi YasudaYohtaro Matsuo
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2008 Volume 3 Issue 5 Pages 264-267


Fractoluminescence (FL) intensity and bending strength were simultaneously measured in silica glass, single crystal and polycrystalline MgO to study dependence of the FL on mechanical properties. In the silica glass, the FL intensity was positively correlated with the bending strength. Also, the positive correlation was found in the single crystal MgO. However, there was not clear dependence in the polycrystalline MgO. This suggests that the FL intensity is connected with the energy released by fracture in glasses and single crystal ceramics, and that grain boundary also contributes to the FL in polycrystalline ceramics.

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© 2008 by Japanese Society of Tribologists
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