科研之友
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摘要
High ablation resistant carbon-phenolic (C-Ph) composites were fabricated by the addition of nano silica powder and tested under plasma arc jet at a flux of 2.5 MW m(-2). Nano silica C-Ph composites exhibited much higher ablation resistance compared to conventional C-Ph composites under similar conditions. Microstructure and X-ray diffraction studies reveal that nano silica reacts with char at high-temperature, forming ablation resistant silicon carbide phase. The mechanism of in situ siliconization and the thermophysical properties of the C-Ph composites are discussed.
- 出版日期2010-7
