Abstract:
The present investigation analyzed the microstructure of metallic objects collected in the archaeological site of the Royal Iron Factory of São João of Ipanema, located in Sorocaba, to evaluate whether these objects were produced either by direct reduction and forging or by blast furnace followed pig metal refining and forging. Microstructural characterization and EDX (Energy-dispersive X-ray spectroscopy) microanalysis of no-metallic inclusions were used to find the chemical composition of these remains of the slag used during the processing of the liquid metal. This information is fundamental to formulate hypothesis concerning the fabrication route, based on the amounts for SiO2, Al2O3, Fe0, MgO, e K2O in these non-metallic inclusions. The results indicated that on object was manufactured in the XX century, confirming the contamination of the archaeological site; while two objects were fabricated by the blast furnace route and one by direct reduction.
Reference:
MAIA, R.R.; AZEVEDO, C.R.F.; LANDGRAF, F.J.G. Análise de inclusões de escória em amostras de fábrica de ferro de Ipanema. In: ABM INTERNATIONAL CONGRESS, 67., 2012, Rio de Janeiro. Proceedings..
The present investigation analyzed the microstructure of metallic objects collected in the archaeological site of the Royal Iron Factory of São João of Ipanema, located in Sorocaba, to evaluate whether these objects were produced either by direct reduction and forging or by blast furnace followed pig metal refining and forging. Microstructural characterization and EDX (Energy-dispersive X-ray spectroscopy) microanalysis of no-metallic inclusions were used to find the chemical composition of these remains of the slag used during the processing of the liquid metal. This information is fundamental to formulate hypothesis concerning the fabrication route, based on the amounts for SiO2, Al2O3, Fe0, MgO, e K2O in these non-metallic inclusions. The results indicated that on object was manufactured in the XX century, confirming the contamination of the archaeological site; while two objects were fabricated by the blast furnace route and one by direct reduction.
Reference:
MAIA, R.R.; AZEVEDO, C.R.F.; LANDGRAF, F.J.G. Análise de inclusões de escória em amostras de fábrica de ferro de Ipanema. In: ABM INTERNATIONAL CONGRESS, 67., 2012, Rio de Janeiro. Proceedings..
