Embrittled Silver and Iron Conservation
366 365
Figure 4: EBSD IPF color-coded maps for Gundestrup Cauldron sample 366 (annealed) and sample 365 (cold-worked). The sample 366 image shows extensive
discontinuous precipitation of copper along the grain boundaries. Black regions in the sample 365 image are due to corrosion damage and cracking [1].
[5] JP Northover, Personal communication, Department of HA Ankersmit and JA Mosk, Netherlands Institute for Cultural
Materials, Oxford University, 1999. Heritage, Amsterdam, the Netherlands, 2000, 74-79.
[6] RJH Wanhill, Archaeological Silver Embrittlement: a
Metallurgical Inquiry, NLR-TP-2002-224, National Aerospace
Laboratory NLR, Amsterdam, the Netherlands, 2002.
[7] RJH Wanhill, PA Seinen, RA Rijkenberg, HJM Meijers,
Why have over 2,000 scientists
Historical Metallurgy 41 Part 1 (2007) 32-39. in 35 countries selected
[8] L Selwyn, Metals and Corrosion: A Handbook for the
Minus K
®
vibration isolators?
Conservation Professional, Canadian Conservation Institute,
Ottawa, Canada, 2004.
Our Negative Stiffness systems
[9] J van Reekum, E Moll, Coating silverware: from daily use
deliver 10x to 100x better
to museum object, Zeven Ijzersterke Verhalen over Metalen, ed.
performance than air systems and
even better than active systems.
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Figure 5: Brittle intergranular fracture of an iron pile-shoe from a Roman bridge [1].
sales@minusk.com •
www.minusk.com
38
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