An integrated composite with a porous Cf/C-ZrB2-SiC core between two compact outer layers of Cf/C-ZrB2-SiC and Cf/C-SiC. Issue 3 (March 2015)

• Record Type: Journal Article
• Authors: Hu, Chenglong; Pang, Shengyang; Tang, Sufang; Wang, Yongcai; Cheng, Hui-Ming
• Is Part Of: Journal of the European Ceramic Society. Volume 35:Issue 3(2015:Mar.)
• Page Start: 1113
• Page End: 1117
• Publication Date: 2015-03
• Subjects: Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2014.10.005
• Languages: English
• ISSNs: 0955-2219

Abstract

<abstract abstract-type="author" id="abs0005"> <title id="sect0005">Abstract</title> <sec> <p id="spar0005">In order to achieve the goals of thermal protection, structure load-bearing and weight reduction of thermal protection materials, a multifunctional integrated composite is fabricated by the combination of slurry infiltration and isothermal chemical vapor infiltration, which has a porous C_f/C-ZrB₂-SiC core between two outer layers of compact C_f/C-ZrB₂-SiC and C_f/C-SiC. Compared to a C_f/SiC composite with a density of 2.1 g cm⁻³, the material presents a low density of 1.65 g cm⁻³ and a 65% lower thermal conductivity in-thickness (3.29 W m⁻¹ K⁻¹), while its flexural strength is 260 MPa, only 16% lower. In addition, the integrated composite exhibits a good ablation resistance with a linear ablation rate of 0.79 μm/s for 1000 s.</p> </sec> </abstract>