Effect of volatile silicon species on chromia scale microstructures
Source abstract
Abstract
High temperature corrosion by chlorides and siloxanes, common impurities in waste incinerators, was investigated. A model alloy Fe-30Cr (wt%) exposed to Ar-10 H 2O and Ar-10 H 2O-0.1HCl mixtures (vol%) at 650 °C formed protective Cr 2O 3 scales. Contaminating the reaction gases by siloxanes resulted in an amorphous (Cr,Si)O x scale layer in Ar-10 H 2 O-0.1HCl and a polycrystalline, Si-rich Cr 2O 3 scale in Ar-10 H 2 O. Mass transfer calculation showed the feasibility of Si supply from the vaporisation of siloxanes. The co-effect of HCl and siloxanes on amorphous oxide scale formation is discussed based on oxidation of co-deposited volatile Cr and Si species.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Recycling and utilization of industrial and municipal waste in materials production · Advanced ceramic materials synthesis · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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