从Ballidon实验中对长期玻璃腐蚀机制的洞察力
C L Thorpe1, A J Fisher2, G Manifold1
1School of Chemical, Materials, and Biological Engineering, University of Sheffield, Sheffield, UK.
Npj Materials degradation
|March 20, 2025
概括
这项长达52年的玻璃耐久性研究发现了富含和酸盐的复杂变化层. 季节性气候周期可能会影响玻璃的改变,影响耐用性评估.
科学领域:
- 材料科学 材料科学 材料科学
- 考古学科学 考古学科学
- 环境科学 环境科学
背景情况:
- 巴利登实验是关于玻璃耐久性的最长期研究之一.
- 了解玻璃的改变对于保存考古文物和处理废玻璃至关重要.
研究的目的:
- 在埋葬52年后,分析现代和模拟考古玻璃上的改变机制和程度.
- 将现场变化数据与实验室溶解试验进行比较.
主要方法:
- 埋葬玻璃样品在轻微性,不和的条件下52年.
- 对玻璃样本进行表面分析,以确定变化层的化学和结构.
- 与实验室溶解试验进行比较.
主要成果:
- 形成了复杂的变化层,从环境中吸收和,在和区域旁边形成富含的相.
- 由于流体进入和结构演变,持续变化的证据.
- 富含的地区含有叶片,可能与季节性气候周期和埋葬时间有关.
- 表面处理显著影响了现场样本的初始变化率.
结论:
- 玻璃改变层是复杂的,受到环境化学和流体动力学的影响.
- 季节性气候变化可能在玻璃变化的长期演变中发挥作用.
- 变化层厚度是估计玻璃总溶解的不可靠指标,特别是与实验室发现相比.
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