著者

独立行政法人国立文化財機構奈良文化財研究所埋蔵文化財センター 高妻 洋成 こうづま ようせい Kouzuma Yousei 金田 明大 かねだ あきひろ Kaneda Akihiro 松田 和貴 まつだ かずたか Matsuda Kazutaka 箱崎 和久 はこざき かずひさ Hakozaki Kazuhisa 星野 安治 ほしの やすはる Hoshino Yasuharu 村田 泰輔 むらた たいすけ Murata Taisuke 山崎 健 やまざき たけし Yamazaki Takeshi 柳田 明進 やなぎだ あきのぶ Yanagida Akinobu 馬場 基 ばば はじめ Baba Hajime 脇谷 草一郎 わきや そういちろう Wakiya Souichirou 田村 朋美 たむら ともみ Tamura Tomomi

出版者

独立行政法人国立文化財機構奈良文化財研究所埋蔵文化財センター

雑誌

埋蔵文化財ニュース (ISSN:03893731)

巻号頁・発行日

no.176, pp.1-22, 2019-03-28

著者

柳田 明進 池田 榮史 脇谷 草一郎 松田 和貴 髙妻 洋成

出版者

日本銅学会

雑誌

銅と銅合金 (ISSN:13477234)

巻号頁・発行日

vol.59, no.1, pp.167-172, 2020

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<p>To evaluate the corrosion mechanism of copper artifacts and to propose the effective reburial method that suppresses the corrosion of copper artifacts at the underwater archaeological site, corrosion tests were carried out at the Takashima underwater archaeological site using copper and copper with wood. The results of the corrosion test specified that corrosion proceeded by the effect of H₂S or HS^–even in dissolved oxygen (DO)–depleted conditions at the underwater archaeological site. In the case of the copper with wood, the corrosion rate dramatically increased in comparison with the copper samples due to the effects of wood as nutrient salt for sulfate–reducing bacteria. These results indicate that it is necessary to control the mass transfer of chemical species like H₂S, HS^–, and Cu⁺ for suppression of corrosion of copper artifacts at underwater in addition to DO–depleted conditions. The results of the study also suggest that covering copper artifacts using porous media like sandy soil is an effective means for the preservation of them.</p>

著者

柳田 明進 池田 榮史 脇谷 草一郎 松田 和貴 髙妻 洋成

出版者

日本銅学会

雑誌

銅と銅合金 (ISSN:13477234)

巻号頁・発行日

vol.59, no.1, pp.167-172, 2020 (Released:2020-11-19)

参考文献数

10

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To evaluate the corrosion mechanism of copper artifacts and to propose the effective reburial method that suppresses the corrosion of copper artifacts at the underwater archaeological site, corrosion tests were carried out at the Takashima underwater archaeological site using copper and copper with wood. The results of the corrosion test specified that corrosion proceeded by the effect of H2S or HS–even in dissolved oxygen (DO)–depleted conditions at the underwater archaeological site. In the case of the copper with wood, the corrosion rate dramatically increased in comparison with the copper samples due to the effects of wood as nutrient salt for sulfate–reducing bacteria. These results indicate that it is necessary to control the mass transfer of chemical species like H2S, HS–, and Cu+ for suppression of corrosion of copper artifacts at underwater in addition to DO–depleted conditions. The results of the study also suggest that covering copper artifacts using porous media like sandy soil is an effective means for the preservation of them.