期刊
CORROSION SCIENCE
卷 189, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109598
关键词
Carbon; carbon composites; Ultra-high temperature ceramics; Ablation; Microstructure
资金
- [614291102020517]
ZrC-SiC-ZrB2 and ZrC-SiC inhibited carbon/carbon composites wedge shaped components were fabricated by reactive melt infiltration and tested on an oxyacetylene torch at a heat flux of 2.38 MW/m2 for 120 s. Compared with C/C composites, both inhibited composites components exhibited better ablation resistance with tip temperatures reaching about 2500 degrees C. Structural evolution on the surfaces of the inhibited composites components included a porous ZrO2 layer near the tip, layered structure of the outer ZrO2 layer, subsurface ZrO2-SiO2 layer in the intermediate region, and SiO2 layer in the tail.
The ZrC-SiC-ZrB2 and ZrC-SiC inhibited carbon/carbon composites wedge shaped components were fabricated by reactive melt infiltration and tested on an oxyacetylene torch at the heat flux of 2.38 MW/m2 for 120 s. Compared with C/C composites, both of the inhibited composites components exhibited better ablation resistance. The tip temperatures of the composites components reached about 2500 degrees C. A structure evolution on the surfaces of the inhibited composites components included the porous ZrO2 layer near the tip, the layered structure of the outer ZrO2 layer and the subsurface ZrO2-SiO2 layer in the intermediate region and the SiO2 layer in the tail.
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