Ablation behavior of ZrB2–SiC–ZrO2 ceramic composites by means of the oxyacetylene torch
Ablation behavior of ZrB2–SiC–ZrO2 ceramic composites by means of the oxyacetylene torch
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DOI：
10.1016/j.corsci.2009.05.035
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发表时间：
2009-09
影响因子：
8.3
通讯作者：
Zhou Shanbao;Weijie Li;P. Hu;C. Hong;L. Weng
中科院分区：
文献类型：
--
作者：
Zhou Shanbao;Weijie Li;P. Hu;C. Hong;L. Weng
Ablation behavior of ZrB2–SiC–ZrO2ceramics with two ZrO2contents was investigated using oxyacetylene torch. Thermogravimetric analysis demonstrated that ceramic with 10vol% ZrO2showed initial weight change at higher temperature than the one with 20vol% ZrO2. After same ablation condition, lighter oxidized microstructure and lower weight loss and line gain were obtained from ceramic with 10vol% ZrO2. Ablation mechanism revealed that excessive ZrO2would supply much path to the inward transport of oxygen, which led to the dissatisfactory resistance to oxidation and ablation for the ceramic with 20vol% ZrO2.
