Oxygen Depletion Testing of Metals
Abstract
:1. Introduction
- Research into preventive conservation;
- A screening technique for archaeological iron and copper alloy stability;
- Research into interventive conservation (not researched in this work);
- A detection method for accelerated corrosion tests, such as the Oddy test.
1.1. Research into Preventive Conservation
- Temperature compensation;
- Angle of measurement—the angle between the analysor fibre and sensor can affect the measured value; much less impact is seen on phase shift type measurements than absolute intensity measurements;
- Distance from the probe head to the sensor can affect the measured value;
- 80% maximum RH, without further calibration;
- Air pressure;
- Moving the containers appears to affect the measured value for some minutes;
- Light sensitivity of the sensors;
- Cleaning—the packaging industry practice of adhering the sensor to the inside of the glass vessel is unsuitable when cleaning of the container is required between heritage conservation experiments.
1.2. A Screening Technique for Archaeological Iron and Copper Alloy
1.3. Research into Interventive Conservation
1.4. A Detection Method for Accelerated Corrosion Tests, Such as the Oddy Test
2. Materials and Methods
2.1. Samples
2.2. Experimental Methods
3. Results
3.1. Research into Preventive Conservation
3.2. A Screening Technique for Archaeological Iron and Copper Alloy
3.3. A Detection Method for Accelerated Corrosion Tests, Such as the Oddy Test
4. Discussion and Conclusions
Supplementary Materials
Funding
Acknowledgments
Conflicts of Interest
References
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Location (Code) | Object Description | Number of Objects Tested | Test Method 1 | Storage Conditions |
---|---|---|---|---|
Billingsgate | Nails | 27 | as [8] | unreported, data taken from Watkinson et al. [8] |
Caerleon (CPF) | Nails | 30 | as [8] | unreported, data taken from Watkinson et al. [8] |
Camber Castle (Cam) | Cannon balls, musket fittings, swords, daggers | 41 | (ii) | dry silica gel |
Carisbrooke Castle | Lock, chainmail, nails, knives, spear heads, arrowheads, helmets | 31 | (iii) | dry silica gel |
Dover Castle | Horseshoes, keys, arrowheads, nails | 27 | (iii) | dry silica gel |
Haughmond Abbey | Buckles, pins | 15 | (iii) | dry silica gel |
Lullingstone Villa | Pin, knife, lock, nails | 21 | (iii) | dry silica gel |
Pevensey Castle | Horseshoes, keys, arrowheads, nails, staff terminal | 12 | (iii) | dry silica gel |
St Augustine’s Abbey | Keys, nails, brackets, pins | 32 | (iii) | dry silica gel |
Stonea (Stn) | Hook, daggers, spearheads, arrowheads, nails | 32 | (i) | uncontrolled conditions |
Sutton Hoo (SH) | Daggers, spearheads, arrowheads, nails | 29 | (i) | dry silica gel |
Uley | Daggers, spearheads, arrowheads, nails | 21 | (i) | uncontrolled conditions |
Whitby Abbey | Knives, pins, bar, bracket | 23 | (iii) | dry silica gel |
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Thickett, D. Oxygen Depletion Testing of Metals. Heritage 2021, 4, 2377-2389. https://doi.org/10.3390/heritage4030134
Thickett D. Oxygen Depletion Testing of Metals. Heritage. 2021; 4(3):2377-2389. https://doi.org/10.3390/heritage4030134
Chicago/Turabian StyleThickett, David. 2021. "Oxygen Depletion Testing of Metals" Heritage 4, no. 3: 2377-2389. https://doi.org/10.3390/heritage4030134
APA StyleThickett, D. (2021). Oxygen Depletion Testing of Metals. Heritage, 4(3), 2377-2389. https://doi.org/10.3390/heritage4030134