@article{DING2018, 
author = {Qi DING and Dewei NI and Zhen WANG and Hao ZHONG and Hongda WANG and Haijun ZHOU and Yanmei KAN and Shaoming DONG},
title = {3D Cf/SiBCN composites prepared by an improved polymer infiltration and pyrolysis},
year = {2018},
journal = {Journal of Advanced Ceramics},
volume = {7},
number = {3},
pages = {266-275},
keywords = {Cf/SiBCN, ceramic matrix composites (CMCs), polymer infiltration and pyrolysis (PIP), dicumyl peroxide (DCP)},
url = {https://www.sciopen.com/article/10.1007/s40145-018-0278-0},
doi = {10.1007/s40145-018-0278-0},
abstract = {Using liquid poly(methylvinyl)borosilazanes (PMVBSZ) as precursor, carbon fiber reinforced SiBCN matrix composites (Cf/SiBCN) were fabricated by a modified polymer infiltration and pyrolysis (PIP) process. With dicumyl peroxide added as cross-linking agent, the PMVBSZ could be solidified at a low temperature of 120 ℃, leading to a high ceramic yield of ~70%. The cross-linking mechanism and ceramization processes of the precursor were investigated in detail. Moreover, a modified infiltration technology was developed, which improved the efficiency and protected the precursor against moist air during PIP. Consequently, the obtained Cf/SiBCN composites had an oxygen content of around 1.22 wt%. Benefiting from the high ceramic yield and high efficiency of the modified PIP, Cf/SiBCN composites with an open porosity of ~10% and uniform microstructure were obtained after only 7 cycles of PIP. The flexural strength and fracture toughness of the derived Cf/SiBCN composites were 371 MPa and 12.9 MPa·m1/2, respectively. This work provides a potential route for the fabrication of high performance Cf/SiBCN composites.}
}