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Water diffusion in silicate glasses under natural weathering conditions: evidence from buried medieval stained glasses

机译:自然风化条件下硅酸盐玻璃中的水扩散:来自埋没的中世纪彩色玻璃的证据

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摘要

In this study, ion-microprobe analyses of four samples of buried medieval stained-glasses are used to demonstrate that water penetrates into the matrix of pristine glasses at low temperatures, thereby showing that glass alteration is not only a surface process. The diffusion coefficients of water determined from concentration profiles of hydrogen are found to be correlated with the bulk polymerization state of the glass. This observation is discussed with respect to glass structure and implies that ionic exchange between hydrogen and network modifying metal cations is the major process responsible for glass hydration. (c) 2006 Elsevier B.V. All rights reserved.
机译:在这项研究中,对四个埋没的中世纪彩色玻璃样品进行了离子微探针分析,以证明水在低温下会渗透到原始玻璃的基质中,从而表明玻璃的改变不仅是表面过程。发现由氢的浓度曲线确定的水的扩散系数与玻璃的本体聚合状态相关。关于玻璃结构讨论了该观察结果,并暗示氢与网络改性金属阳离子之间的离子交换是负责玻璃水化的主要过程。 (c)2006 Elsevier B.V.保留所有权利。

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