| Title |
Material Degradation of Ancient Iron Pot by Repeated Heating for One Thousand Years |
| Authors |
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) |
| DOI |
https://doi.org/10.3365/KJMM.2012.50.4.324 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
ancient iron pot; microstructural change; ferrite/graphite/pearlite; high aspect ratio carbide |
| 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. |