In-situ Analysis of the Direct Reduction Process of Wustite by Solid-state Carbon in TEM

摘要

The method of in-situ analysis of the direct reduction of iron oxides by solid state carbon in a transmission electron microscope (TEM) was invented. This method was performed using wustite as an iron-oxide and carbon-deposition as a solid state carbon. The fracture surface was utilized to get the clean surface of wustite. The carbon was deposited on the fracture surface of wustite to contact with wustite. The preparations of the specimen was done with the size of thin foil of TEM sample. In-situ observation was performed at elevated temperature. The Fe precipitation at the boundary of wustite and carbon. The growth of Fe-precipitates into the carbon layer was also observed.