The ZrO₂ Formation in ZrB₂/SiC Composite Irradiated by Laser

Ling Liu; Zhuang Ma; Zhenyu Yan; Shizhen Zhu; Lihong Gao

doi:10.3390/ma8125475

The ZrO₂ Formation in ZrB₂/SiC Composite Irradiated by Laser

Materials (Basel). 2015 Dec 14;8(12):8745-8750. doi: 10.3390/ma8125475.

Authors

Ling Liu^{1

2}, Zhuang Ma^{3

4}, Zhenyu Yan^{5

6}, Shizhen Zhu^{7

8}, Lihong Gao^{9

10}

Affiliations

¹ School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China. richard@bit.edu.cn.
² National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, China. richard@bit.edu.cn.
³ School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China. hstrong929@bit.edu.cn.
⁴ National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, China. hstrong929@bit.edu.cn.
⁵ School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China. yanzhenyu@bit.edu.cn.
⁶ National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, China. yanzhenyu@bit.edu.cn.
⁷ School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China. zhusz@bit.edu.cn.
⁸ National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, China. zhusz@bit.edu.cn.
⁹ School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China. gaolihong@bit.edu.cn.
¹⁰ National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, China. gaolihong@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.

Keywords: ZrB2/SiC; ZrO2 formation; laser irradiation.