Microstructure and ablative properties of Si-SiC coating prepared by spark plasma sintering
Source abstract
Abstract
Abstract In order to improve ablation resistance of graphite, Si-SiC coatings were fabricated on the graphite substrate by spark plasma sintering. Effects of the sintering temperature and composition were investigated on the microstructure and ablation resistance of the coatings. Phase synthesis and microstructure were studied by X-ray diffraction and field emission scanning electron microscope, respectively. SiC was successfully in-situ synthesized by SPS of Si–SiC–Al2O3 powders mixture. The results of ablation test showed that the ablation resistance of the graphite was remarkably enhanced and the sample with 30 wt% Si had the optimum properties which was sintered at 1400 °C. In contrast to uncoated graphite, the ablated mass and the mass ablation rate of the sample with the composition of 30Si-60SiC-10Al2O3 (wt%) decreased by 84.7% and 87.5%, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Diamond and Carbon-based Materials Research · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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