Ablation behavior of Cf/ZrC-SiC and Cf/SiC composites produced by precursor infiltration and pyrolysis combined with gaseous silicon infiltration
Source abstract
Abstract
The ablation behavior of C f/ZrC-SiC and C f /SiC composites by a novel combined process was studied. The FLUENT calculation indicates high thermophysical gradients of oxyacetylene torch, which determines ablation behavior of the composites. The integrated effects of oxidation, evaporation and mechanical factor result in discontinuous SiO 2 scale, thus causing severe ablation of C f/SiC composites. As for C f /ZrC-SiC composites, the joint action of ZrO 2 and SiO 2 bilayer structure provides good ablation and oxidation resistance. Nevertheless, a little erosion of C f/ZrC-SiC composites occurs by the integrated effects of chemical and physical erosion, and the mechanical factor plays a more important role.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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