2010 Fiscal Year Final Research Report
A new perspective on the study of thermal treatment processes of Asian bronze : a view from modern Korean Yugi ware
| Project/Area Number |
19300299
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Cultural property science
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| Research Institution | University of Toyama |
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Principal Investigator |
MIFUNE Haruhisa University of Toyama, 芸術文化学部, 教授 (20181969)
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| Co-Investigator(Kenkyū-buntansha) |
NAGAE Takekazu 富山大学, 芸術文化学部, 准教授 (60443420)
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| Co-Investigator(Renkei-kenkyūsha) |
HARADA Kazutoshi 東京芸術大学, 美術館, 教授 (20141989)
SHIMIZU Yasuji 橿原考古学研究所, 調査第2課, 主任研究員 (90250381)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 高錫青銅器 / 錫22% / 焼入れ / 熱間鍛造 / 鋳造 / 製作技術 / 温度計測 / 金属組織 |
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| Research Abstract |
High-tin bronze tends to have relatively low-strength. Nevertheless, the alloys were frequently used as raw materials of mirrors, weapons and musical instruments in antiquity. Investigations of traditional high-tin bronze manufacturers in modern Korea and India revealed that forming of high-tin bronze products with a content of around 22% tin was performed through casting or hot forging in the temperature range between 550 and 780℃. In particular, hot forging has enabled us to fabricate bronze bowls with thin (approximately 0.3mm) wall. The investigations also revealed that hot forged bronze bowls were subsequently water quenched from the temperature range between 650 and 740℃ in order to increase the strength of the products. Due to the results, metallographic examination of bronze artifacts allowed us to shed new light on fabrication techniques of ancient high-tin bronze products.
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