Online-Joining of C/SiC-C/SiC via slurry reaction and precursor infiltration and pyrolysis process with C/SiC pins
C/SiC composites have widely application prospects in the field of aeronautic and aerospace for their excellent properties.The joining of C/SiC composites is a key to fabricate large and complex components.In this paper,1D C/SiC pins were prepared by precursor infiltration and pyrolysis (PIP) process and used to join C/SiC composites by Slurry react (SR) and PIP process.The shear strength of the C/SiC pins with different carbon fiber volumes was investigated with the maximum shear strength as high as 339.46MPa.Influences of C/SiC pins on the joining properties of C/SiC composites were studied.The shear strength and flexural strength of C/SiC-C/SiC joining are improved from 9.17MPa and 30.41MPa without pins to 20.06MPa and 75.03MPa with one C/SiC pin (diameter 2mm),respectively.The reliability of C/SiC-C/SiC joining is also improved with C/SiC pins in that the fracture mode changes from catastrophic without pins to non-catastrophic.The SEM photos show a strong bond between joining layer and C/SiC composites without obvious interface.
C/SiC composites Pins Online-joining
Yudi Zhang Haifeng Hu Changrui Zhang Guangde Li
National Key Laboratory of Science and Technology on Advanced Ceramic Fibers and Composites,College of Aerospace and Materials Engineering, National University of Defense Technology,Changsha 410073, China
国际会议
广州
英文
135-140
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）