WASHING METHODS FOR CHLORIDE REMOVAL FROM MARINE IRON ARTIFACTS

WASHING METHODS FOR CHLORIDE REMOVAL FROM MARINE IRON ARTIFACTS
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从海洋铁制品中去除氯化物的洗涤方法

DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
C. Pearson
C. Pearson
中科院分区：
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文献类型：
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作者：
N. North;C. Pearson

文献摘要

被引文献

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摘要研究了海洋铁器洗涤过程中氯化物的去除机理。通过比较FeOCl的分解速率和氯的萃取率，表明在大多数条件下，除氯过程是扩散控制的。研究了这一点的影响，并确定了处理时间取决于许多因素，这些因素可能有很大的不同，既有来自不同沉船的文物，也有来自同一沉船的文物。在比较不同洗涤技术的效率时，必须考虑这种差异。设计了一种评估相对效率的方法，并将其用于比较不同的标准治疗程序。对腐蚀产物进行化学还原的处理中，氯的提取效果最好。
AbstractThe mechanisms by which chlorides are removed from marine iron artifacts during washing processes were investigated. By comparing the decomposition rates of FeOCl and the chloride extraction rates it was shown that, under most conditions, the chloride removal process is diffusion controlled. The implications of this were examined and it was established that the treatment times depend on a number of factors which can vary greatly, both between artifacts from different shipwrecks and also those from the same wreck. This variation must be taken into account when comparing the efficiencies of different washing techniques. A method for evaluating relative efficiencies was devised and used to compare different standard treatment procedures. The best chloride extraction was found to occur in those treatments which involved chemical reduction of the corrosion product.