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http://dx.doi.org/10.12654/JCS.2019.35.6.05

A Study for Physical Properties and Corrosion for Metals after Softening of Wood  

Park, Jin Young (Department of Heritage Conservation Science, Korea National University of Cultural Heritage)
Kim, Soo Chul (Department of Heritage Conservation Science, Korea National University of Cultural Heritage)
Publication Information
Journal of Conservation Science / v.35, no.6, 2019 , pp. 621-630 More about this Journal
Abstract
A woodblock softening process using saltwater was investigated in order to reduce the cracks and distortion caused by the woodblock-making process and to make the woodblock softer and sculpturing easier. Although anatomical studies of woodblocks have been ongoing for years, little work has been done on softening treatments using natural materials. Hence, the purpose of this paper is to investigate the change in the physical properties of wood treated with saturated brine and the effect of salt on metal nails found embedded in woodblocks. After boiling for twelve h each in water and saturated brine, the saltwater-boiled specimens have longer drying times than the water-boiled specimens. Further, it was observed that salt particles penetrated the cells in the wood. As a result of exposing the copper and iron nails, which were stuck in each specimen, to a high humidity environment, the weight of the saltwater-boiled specimens increased due to the hygroscopicity of the salt. Corrosion of the nails also occurred. This result is similar to the problem that appears on the edge of a woodblock. In conclusion, it was shown that salt in the wood cells affects the corrosion of metal embedded in the wood.
Keywords
Woodblock; Saturated brine; Softening wood; Corrosion for metals;
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