Oxidation Behavior of Tyranno ZMI-SiC Fiber/SiC-SiBC Matrix Composite from 800 to 1200 °C

Donglin Zhao; Xiaomeng Fan; Xiaowei Yin; Xiaoyu Cao; Jing Zhang

doi:10.3390/ma11081367

Oxidation Behavior of Tyranno ZMI-SiC Fiber/SiC-SiBC Matrix Composite from 800 to 1200 °C

Materials (Basel). 2018 Aug 7;11(8):1367. doi: 10.3390/ma11081367.

Authors

Donglin Zhao¹, Xiaomeng Fan², Xiaowei Yin³, Xiaoyu Cao⁴, Jing Zhang⁵

Affiliations

¹ Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China. zhaodonglin0@nwpu.edu.cn.
² Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China. fanxiaomeng@nwpu.edu.cn.
³ Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China. yinxw@nwpu.edu.cn.
⁴ Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China. caoxiaoyu@sust.edu.cn.
⁵ Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China. zj52sm@suho.com.

Abstract

In this work, the self-healing Si-B-C matrix-modified ZMI-SiC fiber/SiC (SiC/SiC-SiBC) composite was prepared by a combined process of chemical vapor infiltration, slurry infiltration, and liquid silicon infiltration. The weight changes of the as-fabricate composite after oxidation at 800, 1000, and 1200 °C for 100 h were -0.41%, -0.06%, +0.05%, respectively. The corresponding strength retention ratios were 75%, 99%, 100%, respectively. With the increase of oxidation temperature, coating cracks would be closed. A dense oxidation film was formed with the oxidation of the SiBC matrix, preventing the oxidation of interphase and fiber and leading to excellent oxidation resistance at 1000 and 1200 °C.

Keywords: ceramic matrix composite; fibers; oxidation resistance.