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Vol.50, No.4, 324 ~ 331, 2012
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| Title |
| Material Degradation of Ancient Iron Pot by Repeated Heating for One Thousand Years |
| 고형순 Hyeong Sun Go , 한민수 Min Su Han , 최병학 Byung Hak Choe , 민두식 Doo Sik Min , 심윤임 Yun Im Shim , 정효태 Hyo Tae Jeong , 조남철 Nam Chul Cho |
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| Abstract |
| The microstructural changes of three pieces from an ancient iron pot were studied in order to identify present the material degradation due to repeated heating for one-thousand years. The microstructures of the pieces were divided into the areas of ferrite/graphite, ferrite/pearlite, and corroded oxidation. The area of ferrite/graphite was undergone by severe Galvanic corrosion, but that of ferrite/pearlite was not even during a thousand years` using . The shape of the graphites was coexisted with types of A, B, and C of as modern graphite classification. In the ferrite/pearlite area, abnormal acicula precipitates with a high aspect ratio of 0.2㎛thickness and several hundreds ㎛length were presented. They might be a kind of carbide in the ferrite matrix with its special precipitate plane. |
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| Key Words |
| ancient iron pot, microstructural change, ferrite/graphite/pearlite, high aspect ratio carbide |
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