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Journal of the Korean society of Conservation Science for Cultural Heritage 1996;5(2):35-44.
Published online December 25, 1996.
Desalting System for Excavated Metal Objects Using High Temperature, High Pressure Deoxygenated Water
Setsuo IMAZU, Takayasu KOEZUKA
ABSTRACT
We propose a new method to remove salts that have permeated into excavated metal objects. This method cleans the excavated metal objects by using high temperature, high pressure deoxvgenated water containing inhibitors for corrosion of metals. The method greatly reduces the washing time compared with previous methods. Waste water from the method does not need treatment, nor do chemicals need to be removed from the metal objects. Furthermore, this method is applicable to some kind of metals(for example iron objects, bronze objects). We measured quantitatively the soluble salts dissolved from actual metal objects and found that there was a large difference between soluble chloride ions and sulfate ions.
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