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http://dx.doi.org/10.3365/KJMM.2012.50.8.599

Forging Process Technology as Observed in the Microstructure of a Hammer Scale Excavated from the Naju Bogam-ri Remains  

Song, Jung Il (Conservation Science lab., Naju National Research Institute of Cultural Heritage & Department of Metallurgical Engineering, Chonbuk National University)
Woo, Kee Do (Division of Advanced Materials Engineering & RCAMD, Chonbuk National University)
Publication Information
Korean Journal of Metals and Materials / v.50, no.8, 2012 , pp. 599-603 More about this Journal
Abstract
The microstructure of a hammer scale excavated from the Bogam-ri was examined in an effort to understand the iron technologies applied in the manufacturing of an iron forging process technology. The microstructures of oxide layer in the hammer scale were found to have crucial information about the ancient iron forging process treatment. The microstructure observed in the hammer scale can be distinguished by the forging process. First, the microstructure of the oxide layer in the hammer scale created by the forging process is Wstite (FeO) in the form of leaves. Latterly, the microstructure of the $W{\ddot{u}}stite$(FeO) in the hammer scale is observed to be in the form of a flat shape formed by a repeating forging process.
Keywords
hammer scale; bloomery iron; bogam-ri; forging process; slag;
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