摘要
采用混合酸对碳纤维(CF)进行表面改性处理,并通过PVD法在改性CF表面制备了Al涂层.研究了改性处理前后CF表面性能差异及电弧电流和沉积时间对Al涂层微观形貌的影响.结果表明,混合酸改性处理后CF表面粗糙度及比表面积增加,表面引入了-OH、-COOH等活性官能团,表面润湿性得到改善.随着电弧电流和沉积时间的增加,Al涂层的沉积速率不断增加,涂层更加连续致密.当电弧电流为110A,沉积时间为30min时,涂层厚度约为1.1μm.具有Al涂层的CF平均拉伸强度为3.62±0.29GPa,相比于未处理CF的拉伸强度略有提高.抗热震循环测试表明Al涂层与CF基体之间具有良好的界面结合性能.
In this paper,carbon fiber （CF） was modified with mixed acid,and Al coating was prepared on the surface of modified CF by PVD. The differences in surface properties of CF before and after modification were explored, and the effects of arc current and deposition time on the micromorphology of Al coating were studied. The results show that both of surface roughness and specific surface area of CF after mixed acid modification is increased, the surface of fiber introduces actively functional groups such as --OH and COOH,and the surface wettability is improved. As arc current and deposition time increase, the deposition rate of A1 coating continuously increases, and the coating is more continuous and dense. When arc current was 110 A and deposition time was 30 rain,the prepared Al coating is uniform and dense,the particle size is uniform,and the coating thickness is about 1.1μm. In addition,the average tensile strength of Al coating CF （Al CF） was 3.62±0.29 GPa,which was a lightly increase compared to that of the untreated CF. The thermal shock resistance test shows that A1 coating has good interracial bonding properties with CF matrix.
作者
张伟刚
赵雪妮
刘军鹏
王瑶
刘庆瑶
郑佳梅
杨璞
陈雪岩
ZHANG Wei-gang;ZHAO Xue-ni;LIU Jun-peng;WANG Yao;LIU Qing-yao;ZHENG Jia mei;YANG Pu;CHEN Xue yan(College of Mechanical and Electrical Engineering,Shaanxi University of Science ＆ Technology,Xi＇an 710021,China)
出处
《陕西科技大学学报》
CAS
2018年第6期141-146,共6页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(51772179
51072107)
陕西科技大学大学生创新创业训练计划项目(2016025
201710708040)
