Peter try this: I would change your definitions:
Verdigris - the common name for the chemical Cu(CH3COO)2, or copper(II) acetate. It commonly occurs by the action of acetic acid when copper, brass or bronze is weathered and exposed to air or seawater over a period of time. It can destroy a coin or bronze artifact so that part is correct. An it is the same in English
Copper chloride (CuCl) - is commonly referred to as "Bronze Disease". A pale blue-green powdery coating on bronze . It is an acid attack, NaCl + water = NaOH + HCl, the Hcl will attack the bronze matrix forming the CuCl + CuO. It will destroy bronze, if not stopped
Tin Pest - At 13.2 degrees Celsius (about 56 degrees Fahrenheit) and below, pure tin transforms from the (silvery, ductile) allotrope of β-modification white tin to brittle, α-modification grey tin. Eventually it decomposes into powder, hence the name tin pest. The decomposition will catalyze itself, which is why the reaction seems to speed up once it starts; the mere presence of tin pest leads to more tin pest. Tin objects at low temperatures will simply disintegrate.
Zinc Pest -
http://en.wikipedia.org/wiki/Zinc_pestBruce
Bruce
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