Abstract
Pure iron and binary alloys containing 1, 2, 3, and 5 wt % Si were reacted at with a carbon-supersaturated, flowing gas mixture of 68% CO, 26% , and 6% ( and ). Alloy reaction products consisted of a subsurface zone of internally precipitated , an external scale of , and a voluminous superficial deposit of coke containing particles of cementite and silica. Coking and metal dusting rates both increased with alloy silicon level. Internal oxidation rates also increased with silicon concentration but net scaling rates decreased. It is proposed that increasing volume fractions of silica in the scale provides more sites for graphite nucleation, which leads to accelerated disintegration of the scale surface. This accounts for the more rapid dusting, faster coking (catalyzed by more particles), and thinner scales.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
