極小空気プラズマジェットによる炭化ケイ素系材料のアブレーション試験(流体工学,流体機械)

概要

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In order to investigate the effectiveness as a heat shield of SiC-based and carbon-based materials, the ablation experiments were performed in micro-air plasma-jet at an atmospheric pressure. Test materials are SiC/SiC, SiC, C/C, and C. These materials were inserted into the plasma-jets and ablation properties were measured, that is weight loss rate and the heat of ablation. In order to investigate the physical behaviors of the materials in the plasma-jets, the ablating C/C and C were observed by a high-speed video camera. In addition, the surface of the ablated materials was observed with a scanning electron microscope and was analyzed quantitatively with an electron probe microanalyzer. It was found that SiC-based materials might be effective as an ablation material because of its small weight loss. The heats of ablation of C/C and C were almost the same. The surface observation and quantitative analyses showed that the ablated surfaces of SiC-based materials were covered with silicon oxides.
社団法人日本機械学会の論文
2009-05-25