Significantly improved water-oxygen corrosion resistance of SiC/SiC composite modified by Si-B-Mo-Y using reactive melt infiltration
Source abstract
Abstract
Si-B-Mo-Y modified SiC/SiC composites were prepared by reactive melt infiltration (RMI) process to study their high-temperature water-oxygen corrosion resistance, and to compare them with SiC/SiC composites prepared by RMI using Si. The results show that the corrosion rates of the modified composites are only 1/9, 1/10 and 1/3 of those of the comparison samples at 1200°C, 1300°C and 1400°C, respectively, which is attributed to the higher densification of the modified composites. More importantly, the modified composites were able to form borosilicates, which effectively healed the oxide film defects; meanwhile, yttrium silicate inhibited the reaction between borosilicates and water vapor.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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