Influence of Carbon Fiber Pre-treatments on Interlaminar Shear Strength and Fracture Behavior of C/C Composites

摘要：

PAN-carbon fibers were pretreated using three methods. 2D-C/C composites were fabricated by a rapid chemical liquid-vaporized infiltration (CLVI) processing. Surface morphologies of carbon fiber pretreated and fracture micrographs of 2D-C/C composites were observed by scanning electron microscopy (SEM) and high resolution transmission electron microscope (HRTEM). The interlaminar shear strength(ILSS) of C/C composites was tested. The influences of carbon fiber surface pretreatments on ILSS and fracture behaviors of C/C composites were analyzed. The experimental results indicated that the C/C composite with carbon fiber coated CVI pyrocarbon possesses both higher flexural strength and interlaminar shear strength than composites with other fiber pretreatments. The fractographes revealed the differences in the mechanical behavior depending on the interface strength of fiber/matrix.

关键词： carbon/carbon composites rapid densification fiber surface pre-treatment interface mechanical behavior

作者: Wanchang Sun Hejun Li Qiangang Fu Shouyang Zhang

作者单位: School of Materials Science and Engineering, Xian University of Science and Technology,Xian, Shaan School of Materials Science and Engineering, Xian University of Science and Technology,Xian, Shaan School of Materials Science and Engineering, Xian University of Science and Technology, Xian, Shaa

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 482-487

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）