1 Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, China. riedel@materials.tu-darmstadt.de.
2 Technische Universität Darmstadt, Fachbereich Material- und Geowissenschaften, Fachgebiet Disperse Feststoffe, NPU-TU Darmstadt Joint International Research Laboratory of Ultrahigh Ceramic Matrix Composites, Darmstadt, Germany. riedel@materials.tu-darmstadt.de.
3 College of Materials, Key Laboratory of High Performance Ceramic Fibers, Xiamen University, Ministry of Education, Xiamen, China. zhaojuyu@xmu.edu.cn.
4 College of Materials, Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen, China. zhaojuyu@xmu.edu.cn.