Surface shear stress relaxation of silica glass
Surface shear stress relaxation of silica glass
复制标题
石英玻璃的表面剪切应力松弛
DOI:
10.1111/jace.16342
复制
发表时间:
2019
影响因子:
3.9
通讯作者:
Tomozawa, Minoru
中科院分区:
文献类型:
--
作者:
Aaldenberg, Emily M.;Aaldenberg, Jared S.;Blanchet, Thierry A.;Tomozawa, Minoru
A constant angle of twist was applied to silica glass rods in order to produce a torsional shear strain and a reduction in torque representative of the stress state in the glass was measured as a function of time when rods were heat‐treated in air at temperatures, 550‐700°C, far below the glass transition temperature. The monotonic decrease of torque with time was explained by surface stress relaxation, which can be described by a relaxation of stress at the surface of glass which is promoted by water. The obtained surface stress relaxation diffusion coefficients were consistent with those obtained earlier from silica glass fiber bending under a similar water vapor pressure. The observed relaxation in torsion supports the mechanism of surface stress relaxation over the swelling‐based mechanism for applications including glass fiber strengthening.
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DOI:
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发表时间:
2013
期刊:
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P. J. Lezzi;M. Tomozawa;T. Blanchet
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