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Influence of microstructure on the corrosion of archaeological iron observed using 3D synchrotron micro-tomography

机译:用3D同步加速器显微断层扫描观察显微组织对考古铁腐蚀的影响

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A combination of X-ray analytical techniques has been used to study the microstructure and corrosion of a 450-year-old cast-iron cannonball fragment from the Mary Rose shipwreck. Using a 3D approach, it has been shown that akaganeite, beta-FeO(OH, Cl), starts to appear (similar to)1.5 mm below the outer surface of the object, occurring selectively around non-contiguous graphite flakes in the microstructure, with no corrosion in graphite-free regions. This spatial analysis has given a new look inside a 450-year-old system, to see how metallographic features interact with local chemical environments to give complex corrosion products, centuries in the making.
机译:已使用X射线分析技术的组合来研究来自玛丽·罗斯海难的450年历史的铸铁炮弹碎片的微观结构和腐蚀。使用3D方法显示,赤铁矿β-FeO(OH,Cl)在物体外表面下方1.5毫米处开始出现(类似于),在微观结构中不连续的石墨薄片周围选择性地发生,在无石墨区域无腐蚀。这项具有450年历史的系统对这种空间分析的外观进行了重新设计,以了解金相特征如何与本地化学环境相互作用,从而在制造过程中产生复杂的腐蚀产物。

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