Christmas has come early for conservation as Royal Armouries’ Conservator, Ellie Rowley-Conwy tells us about the exciting new addition to the museum’s conservation equipment…
Much of conservation, and the start of treatment on any object, begins with an in-depth look at materials. We have to be aware of what elements make up an object, how it has been manufactured and how these degrade over time, in order to make informed choices about how to prolong its longevity. The Conservation Department at Royal Armouries Museum in Leeds has a shiny, new and portable instrument called an EDXRF (Energy-Dispersive X-Ray Fluorescence) that will help us to investigate all of these areas, and we are very, very excited about it!
The addition of the EDXRF will enable the conservation department to investigate the materials in the national collection at an elemental level – and more importantly it is non-destructive. We will be able to get more of an idea about the uses of different metal alloys used for certain types of arms and armour, how these adapted over time and how they differ around the world.
An example of this could be when analysing leather, often found associated with arms and armour. The reading will pick up chromium so we then know the leather must have been chrome tanned. Chrome tanning of leather began in 1858, meaning we can use this information to help date an object. This also highlights another benefit of the EDXRF, as we can use it to help identify fakes. A number of elements and alloys that are around today could not have been extracted or manipulated for use in the past, due to the lack of modern industrial techniques. If these are present, in a supposedly historic object, then it could indicate that the object, or at least part of it, is a modern reproduction.
The EDXRF will also help us to find out about manufacturing techniques; an example of this is looking at certain decorative techniques. When analysing objects that have been gilded, a reading showing the presence of mercury will tell us that the object was gilded, using the mercury gilding technique. If we took readings from all our gilded objects we could then identify how popular mercury gilding was in the past compared to other gilding techniques.
We hope to gain lots of important information through the use of our new EDXRF and the results that we obtain, and we really look forward to sharing them with you and the other arms and armour enthusiasts out there!
Blogger: Ellie Rowley-Conwy, Conservator