作者: W. J. Quadakkers , J. Żurek , M. Hänsel
DOI: 10.1007/S11837-009-0102-Y
关键词: Alloy 、 Chromia 、 Partial pressure 、 Water vapor 、 Materials science 、 Hydrogen 、 Martensite 、 Metallurgy 、 Oxygen
摘要: The suppression of protective chromia scale formation in water vapor containing service environments limits many cases the upper application temperature high-Cr martensitic and ferritic steels. present paper discusses mechanisms which are responsible for this technologically important effect, using results oxidation tests with two types FeCr model alloys Ar-O2, Ar-O2-H2O, Ar(-H2)-H2O mixtures. data shows that atmospheres a high ratio to oxygen, Cr exhibits higher tendency become internally oxidized than dry or e.g. air. Contrary previous studies showed presence affect transport processes and/or enhance volatile species, thus reveal also affects alloy, likely by incorporation hydrogen.