Changed oxidation behavior of ZrB2–SiC ceramics with the addition of ZrC
Changed oxidation behavior of ZrB2–SiC ceramics with the addition of ZrC
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DOI：
10.1016/j.ceramint.2015.02.150
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发表时间：
2015-07
影响因子：
5.2
通讯作者：
Hu-Lin Liu;Ji‐Xuan Liu;Haiyan Liu;Guo‐Jun Zhang
中科院分区：
文献类型：
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作者：
Hu-Lin Liu;Ji‐Xuan Liu;Haiyan Liu;Guo‐Jun Zhang
研究了含0、10和20%ZrC的ZrB_2-SiC陶瓷在1600℃静止空气中的氧化行为。氧化膜的结构依赖于氧化锌的含量。随着ZrC的加入，最外表面的富SiO_2玻璃层厚度急剧减小。在ZrB_2-碳化硅-锆合金中观察到一层由ZrC_xO_y、碳化硅和锆_2组成的“锆化腐蚀层”。当氧化体积分数为20%时，氧化动力学由抛物线转变为线性。
Oxidation behavior of ZrB2–SiC ceramics containing 0, 10 and 20 vol% ZrC was studied at 1600 °C in stagnant air. The structures of oxide scales depended on ZrC content. The thickness of the SiO2-rich glass layer on the outermost surface decreased steeply with the addition of ZrC. One “ZrC-corroded layer”, containing ZrCxOy, SiC and ZrB2, was observed in ZrB2–SiC–ZrC. The oxidation kinetics was converted from parabolic to linear for the ceramics with 20 vol% ZrC.