6 – Species transport in the corrosion products of ferrous archaeological analogues: a contribution to the modelling of long-term iron corrosion mechanisms
6 – Species transport in the corrosion products of ferrous archaeological analogues: a contribution to the modelling of long-term iron corrosion mechanisms
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6 – 黑色考古类似物的腐蚀产物中的物质迁移：对长期铁腐蚀机制建模的贡献
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
P. Fluzin
中科院分区：
文献类型：
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作者：
E. Vega;P. Dillmann;P. Berger;P. Fluzin
出版商摘要本章重点讨论来自单一地点的考古文物标本在密集产品层（DPL）中的物种迁移。它提出了不同的腐蚀系统，发现在分析的语料库，并讨论了具体的实验上的DPL。第一个的目的是验证在金属基质（M）/DPL界面发生阳极和阴极反应。为了验证腐蚀动力学是否受氧扩散控制，本章提出了三种不同的方法来确定瞬时腐蚀速率。第一种假设控制是有效的溶解氧扩散，使氧表观系数的测定将作出。确定瞬时腐蚀速率的第二种方法将量化在18 O浸没实验期间已经反应的氧原子的数量。最后，第三瞬时腐蚀速率值是从平均腐蚀速率中确定的，该平均腐蚀速率是从试样的年龄和腐蚀产物的厚度推导出的。本章将讨论和评估这些不同的价值。
Publisher Summary This chapter focuses on the species transport in the Dense Product Layers (DPL) of specimens of archaeological artefacts coming from a single site. It presents the different corrosion systems that were found on the analyzed corpus and discusses the specific experiments made on the DPL. The aim of the first is to validate that both anodic and cathodic reactions take place at the Metallic Matrix (M)/DPL interface. To verify if the corrosion kinetics is controlled by the oxygen diffusion, the chapter presents three different ways to determine instantaneous corrosion rates. The first assumes that control is effectively by dissolved oxygen diffusion so that the determination of the oxygen apparent coefficient will be made. The second method to determine an instantaneous corrosion rate will quantify the number of oxygen atoms that have reacted during the 18 O immersion experiments. Lastly, a third instantaneous corrosion rate value was determined from an average corrosion rate deduced from the age of the specimen and the thickness of the corrosion products. These different values are discussed and assessed in the chapter.