Storing corroded iron

From: Christoph Waller <*cwaller<-a*> Date: Monday, April 4, 2005 · cwaller<-a

Very dry storage seems to be an excellent method to prevent further
corrosion of metals like archaeological iron. Desiccant bags
containing molecular sieves, in combination with high-performance
barrier foils, offer the possibility to maintain humidity close to
0% RH inside a sealed bag for several decades. Some customers asked
if such extremely dry atmospheres could lead to shrinkage and
cracking of corrosion layers. From my experience I would say no, but
does anybody know any solid research on this?

Christoph Waller
Long Life for Art
Im Bueckle 4
D - 79288 Gottenheim
+49 7665 94 03 90
Fax: +49 7665 94 03 91

                                  ***
                  Conservation DistList Instance 18:48
                  Distributed: Monday, April 11, 2005
                       Message Id: cdl-18-48-010
                                  ***