Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosion
Source abstract
Abstract
Defects such as bubble pores and cracks of enamel coating accelerate failure in hydrothermal conditions. Here, a trace amount of SiB 6 modified enamel coating prepared at a low sintering temperature showed promising hydrothermal corrosion resistance at 80–600 °C. The semi-crystalline enamel coatings modified by 1 wt% SiB 6 demonstrated enhanced amorphization degree and exhibited a minimal mass change of ∼0.01 % after 480 h. Compared to the undoped coatings, both the equivalent coating electrochemical resistance and charge transfer resistance at the coating/substrate interface were increased by 2∼3 times. A significant amount of flocculent products sealed in the residual pores of the SiB 6 modified enamel coating during hydrothermal reaction process, preventing gaseous H 2 O to migrate to the interface of the steel substrate. This study highlights the synergistic optimization of the amorphous phase and residual stress to dynamically regulate the coating hydrothermal corrosion resistance through a strategic interplay of composition and microstructure design.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · High-Temperature Coating Behaviors · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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