Microstructural study of oxidation of carbon-rich
amorphous boron carbide coating
Microstructural study of oxidation of carbon-rich
amorphous boron carbide coating
ZENG Bin1, FENG Zu-de1, LI Si-wei1, LIU Yong-sheng2
1.Fujian Key Laboratory of Advanced Materials, College of Materials, Xiamen University; 2.National Key Laboratory of Thermostructure Composite Materials, Northwestern Polytechnical University
Abstract：Carbon-rich amorphous boron carbide (BxC) coatings were annealed at 400°C, 700°C, 1000°C and 1200°C for 2 h in air atmosphere. The microstructure and composition of the as-deposited and annealed coatings were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), micro-Raman spectroscopy and energy dispersive X-ray spectroscopy (EDS). All of the post-anneal characterizations demonstrated the ability of carbon-rich BxC coatings to protect the graphite substrate against oxidation. Different oxidation modes of the coatings were found at low temperature (400°C), moderate temperature (700°C) and high temperature (1000°C and 1200°C). Finally, the feasibility of the application of carbon-rich BxC instead of pyrolytic carbon (PyC) as a fiber/matrix interlayer in ceramics-matrix composites (CMCs) is discussed here.
出版日期: 2008-12-05
引用本文:
. Microstructural study of oxidation of carbon-rich
amorphous boron carbide coating[J]. Frontiers of Materials Science in China, 2008, 2(4): 375-380.
ZENG Bin, FENG Zu-de, LI Si-wei, LIU Yong-sheng. Microstructural study of oxidation of carbon-rich
amorphous boron carbide coating. Front. Mater. Sci., 2008, 2(4): 375-380.
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