Investigating sulfur valence depth profile on float glass surfaces using electron probe microanalysis and stepwise etching

IF 3.2 3区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Journal of Non-crystalline Solids Pub Date : 2024-10-31 DOI:10.1016/j.jnoncrysol.2024.123282
Yoshitaka Saijo, Susumu Harako
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Abstract

This study introduces a novel method that significantly improves the understanding of sulfur behavior during the float process, which is a key factor for achieving high-quality glass surfaces. We established and demonstrated a novel approach that combines an optimized electron probe micro-analyzer with a stepwise etching technique for obtaining detailed depth profiling of sulfur concentrations as well as the average valence of sulfur on the surfaces of a float glass sample. The average valence of sulfur from each side of the float glass mirrored each other, exhibiting lower values near the surfaces and higher values internally. A reduced layer extending up to approximately 5 μm on both sides was also present. On the atmosphere side, the reduced layer transitioned abruptly to the oxidized layer. In contrast, the tin side featured an intermediate redox layer, where the sulfur valence gradually increased. We proposed two mechanisms for the formation of this intermediate layer: an inward sulfide diffusion, and an oxidation–reduction reaction involving Sn2+ penetrated from the tin bath.
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利用电子探针显微分析和逐步蚀刻技术研究浮法玻璃表面的硫价深度分布
本研究介绍了一种新方法,可显著提高对浮法过程中硫行为的理解,而硫行为是获得高质量玻璃表面的关键因素。我们建立并演示了一种新方法,该方法将优化的电子探针显微分析仪与逐步蚀刻技术相结合,可获得浮法玻璃样品表面硫浓度和硫平均价的详细深度剖面图。浮法玻璃两侧的平均硫价相互映衬,表面附近的硫价较低,而内部的硫价较高。浮法玻璃两侧还存在一个延伸至约 5 μm 的还原层。在大气一侧,还原层突然过渡到氧化层。与此相反,锡一侧有一个中间氧化还原层,其中硫价逐渐升高。我们提出了形成这一中间层的两种机制:硫化物向内扩散,以及锡槽中渗入的 Sn2+ 参与的氧化还原反应。
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来源期刊
Journal of Non-crystalline Solids
Journal of Non-crystalline Solids 工程技术-材料科学:硅酸盐
CiteScore
6.50
自引率
11.40%
发文量
576
审稿时长
35 days
期刊介绍: The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.
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