摘要
C/SiC-ZrB 2-ZrC composites ere prepared by reactive melt infiltration (RMI) combined with vacuum pressure impregnation (VPI) method. B 4C-C was first introduced into C/SiC composites with a porosity of about 300% by impregnating the mixture of B 4C and phenol formaldehyde resin, followed by pyrolysis at 900°C. The molten ZrSi 2 alloy was then infiltrated into the porous C/SiC-B 4C-C to obtain C/SiC-ZrB 2-ZrC composites. The flexural strength was tested. The ablation behaxior was investigated under an oxyacetylene torch flame. It has been found that the C/SiC-ZrB 2-ZrC showed a high flexural strength and an excellent ablation resistance. The reactions between ZrSi 2 alloy and B 4C-C were studied, and a model based on these reactions was built up to describe the formation mechanism of the matrix.
源语言 | 英语 |
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页(从-至) | 6541-6548 |
页数 | 8 |
期刊 | Ceramics International |
卷 | 38 |
期 | 8 |
DOI | |
出版状态 | 已出版 - 12月 2012 |