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Published on: February 8, 2018
The ZrO₂ Formation in ZrB₂/SiC Composite Irradiated by Laser
Ling Liu1,2, Zhuang Ma3,4, Zhenyu Yan5,6
1School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China. richard@bit.edu.cn.
Abstract:
In order to clearly understand the details of ZrO₂ formation during ablation, high intensity continuous laser was chosen to irradiate ZrB₂/SiC. The results reveal that there are two different modes of ZrO₂ formation depending on whether liquid SiO₂ is present. When liquid SiO₂ is present, ZrO₂ generated by the oxidation of ZrB₂ is firstly dissolved into SiO₂. Then, ZrO₂ will precipitate again, the temperature will decrease and the SiO₂ will evaporate. Otherwise, the ZrB₂ will be oxidized to ZrO₂ directly.
