用溶胶－凝胶法在碳纤维表面涂覆Al<sub>2</sub>O<sub>3</sub>

用溶胶－凝胶法在碳纤维表面涂覆Al₂O₃

摘要: 本文研究用溶胶-凝胶方法在碳纤维表面涂覆Al₂O₃,的工艺对涂层性能、结构及对纤维强度、抗氧化性能等的影响。结果表明:所配溶胶质量好,涂覆工艺合适,可在纤维表面得到均匀、连续的Al₂O₃,涂层;该涂层不仅改善了纤维的抗氧化性能,而且还能保持纤维原有的强度;改善与熔铝的润湿性,为复合材料的制备提供方便。

Abstract: Coating process of Al₂O₃ on carbon fibers and effect of the coating on wettability of carbon fibers by molten aluminum were investigated.Uniform coating on carbon fibers was obtained by the optimized parameters.The coating improved the oxidation-resistance,the strength & the wettability of carbon fibers,and also made the fabricating process of metal matrix composites easier.