Microstructural Characterization of Reaction Products on Iron Based Alloys Exposed to H2/H2S Atmospheres at High Temperatures

Materials Research

Marina F. Pillis¹  Lalgudi V. Ramanathan¹ 

[1] ,Instituto de Pesquisas Energéticas e Nucleares Comissão Nacional de Energia Nuclear São Paulo SP ,Brazil

关键词: sulphidation;    reactive elements;   

DOI  :  10.1590/S1516-14392002000300021

来源: SciELO

【 摘 要 】

Thermogravimetric measurements in H2/H2S environments for up to five hours were carried out to determine the sulphidizing behavior of Fe-20Cr and Fe-20Cr-0.7Y alloys. These measurements helped to determine the mechanism of sulphidization in the early stages. The reaction products were characterized using a scanning electron microscope coupled to an energy dispersive analyzer and by X-ray diffraction analysis. The addition of yttrium influenced the morphology of the sulphide layer and the reaction kinetics.

【 授权许可】

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