1995 Fiscal Year Final Research Report Summary
Desalting system for excavated metal objects using high temperature, high pressure deoxygenated water
| Project/Area Number |
06834018
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
文化財科学
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| Research Institution | Kashihara Archaeological Institute |
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Principal Investigator |
IMAZU Setsuo Kashihara Archaeological Institute, Head of Conservator, 室長 (50250379)
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| Co-Investigator(Kenkyū-buntansha) |
KOEZUKA Takayasu Nara National Cultural Properties Research Institute, Head of Conservation scien, 埋蔵文化財センター, 室長 (10099955)
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| Project Period (FY) |
1994 – 1995
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| Keywords | Autoclave / deoxidation water / inhibitors for corrosion of metals / benzotriazole : BTA / desalting system / iron objects / bronze objects |
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| Research 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 dexygenated 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 kinds 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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