Oxygen Depletion Testing of Metals
Oxygen Depletion Testing of Metals
复制标题
金属的氧消耗测试
DOI：
10.3390/heritage4030134
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发表时间：
2021
期刊：
影响因子：
1.7
通讯作者：
D. Thickett
中科院分区：
文献类型：
--
作者：
D. Thickett
考古金属性质的改变意味着它们在比历史金属低得多的相对湿度 (RH) 条件下会变质。此类材料的劣化研究因其复杂性、可变性和劣化测量的困难而受到阻碍。将物体放入密封容器中，控制相对湿度和污染物气体并测量氧气浓度的下降情况是测量劣化率的一种简便方法。它已被用于研究合适的环境条件，以管理此类文物的恶化速度，包括来自不同挖掘地点的文物的响应差异。有些物体需要小心地将相对湿度控制在较低值；维护成本高昂，并且对一起展示的其他文物构成风险。许多物体实际上在相当高的相对湿度下仍然稳定，并且氧气消耗测试已被用来识别那些可以在最小的环境控制下安全展示的物体。加速腐蚀“Oddy”测试经常用于筛选不合适的显示材料。人们普遍认为视觉评估是主观的。测试容器已被修改，氧消耗似乎可以提供良好的腐蚀定量测量，与铜、铅和钢（但不适用于银）的线性溶出伏安法或化学溶出的视觉比较和腐蚀损失测量相对应。
The altered nature of archaeological metals means they deteriorate at much lower relative humidity (RH) conditions than historical metals. The study of deterioration for such materials is hampered by their complexity, variability and difficulties in measuring deterioration. Placing an object in a sealed container, controlling the RH and pollutant gases and measuring any decrease in oxygen concentration is an accessible method to measure the deterioration rate. It has been used for research into suitable environmental conditions to manage the deterioration rates of such artefacts, including the differences in the response of artefacts from different excavation sites. Some objects need the careful control of RH to low values; this is expensive to maintain and poses risks to other artefacts displayed together. Many objects are actually stable up to quite high RH values, and oxygen depletion testing has been used to identify those that can be safely displayed with minimal environmental control. The accelerated corrosion ‘Oddy’ test is frequently used to sift out unsuitable display materials. T the visual assessment is widely recognized to be subjective. the test container has been modified and oxygen depletion appears to give good quantitative measurements of corrosion that correspond with both visual comparison and corrosion loss measurement with linear stripping voltametry or chemical stripping for copper, lead and steel but not for silver.
相对湿度和内在氯化物对考古熟铁开挖后腐蚀速率的影响
影响因子：
0.8
作者：
Watkinson D
通讯作者：
Watkinson D