Abstract
C/C-ZrC-ZrxCuy composites were fabricated by pressure assisted reactive melt infiltration (PARMI). The infiltrated matrix contained three different ZrC-ZrxCuy regions due to the gradient distribution of carbon and Cu during PARMI, and the dimensions of ZrC particles decreased sequentially from matrix boundary to inside. During 30 s ablation, heat-absorbing effect of Cu-phase slowed down the increasement of surface temperature. After 60 s ablation, porous ZrO2 skeleton evolved to a protective integrated cover, including expanded large-scale infiltrator and network of curly whiskers. Thus, ablation rates of composites were reduced to − 1.7 ± 0.1 µm/s and 1.7 ± 0.1 mg/s, separately.
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