期刊
CORROSION SCIENCE
卷 191, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109723
关键词
C; C; Coating; Oxidation resistance; Self-healing
资金
- National Key Laboratory of Science and Technology on High-Strength Structural Materials [6142912180201, 6142912180203, 2018-000052-73-01-001228]
The CaO-Al2O3-SiO2/ZrO2-borosilicate (CAS/BG) multilayer glass coating prepared on carbon fiber reinforced carbon matrix (C/C) materials can effectively improve their anti-oxidation ability while maintaining excellent mechanical properties. The addition of outer CAS layer can effectively inhibit gases diffusing by sealing and healing defects, thus enhancing the antioxidation property of the materials.
CaO-Al2O3-SiO2/ZrO2-borosilicate (CAS/BG) multilayer glass coating was prepared by slurry method on carbon fiber reinforced carbon matrix (C/C) materials to improve their anti-oxidation ability. The weight loss ratio of coated C/C samples were 21.70 %, 1.63 %, 0.035 % respectively after 50 h oxidation at 1073 K, 1173 K, 1273 K, and the samples had excellent mechanical properties remaining. Compared to single BG layer samples, the added outer CAS layer could effectively inhibit gases diffusing by sealing and healing defects. The increased antioxidation property with the temperature was mainly attributed to the improved healing ability from glass flow and thermal expansion.
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