Anisotropic tribological behavior of LSI based 2.5D needle-punched carbon fiber reinforced Cf/C–SiC composites. Issue 15 (1st August 2022)

• Record Type: Journal Article
• Authors: Xue, Rong; Wang, Zixuan; Zhang, Zhejian; Zhang, Nanlong; Zhang, Yonghui; Xia, Hongyan; Xiao, Zhichao; Wang, Jiping
• Is Part Of: Ceramics international. Volume 48:Issue 15(2022)
• Page Start: 21324
• Page End: 21333
• Publication Date: 2022-08-01
• Subjects: Ceramic-matrix composites -- Tribological behavior -- Anisotropy -- Liquid metal infiltration; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.04.071
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Cf /C–SiC composites were fabricated via liquid silicon infiltration with 2.5D needle-punched carbon fiber reinforced Cf /C composites. The effect of surface topography and carbon content of the Cf /C–SiC composites on the tribological properties was researched by the ball-on-disk reciprocating tribometer. The results indicate that different fiber layers and cross-section of the composites have various surface topography and show significant differences in the friction and wear properties. By the wear morphology and model analyses, the reason for the tribological anisotropy of the composites is that the distribution of carbon and SiC phases in the composites are inhomogeneous caused by the difference of the carbon fiber orientation and the relative content in each layer. Moreover, the wear rate of the short-cut fiber web layer was the lowest and there is an obvious linear decrease in coefficient of friction with increase of carbon content. The present work explains why the tribological properties of the composites are inconsistent and provides a way to adjust the friction properties of composite materials by optimizing the friction surface.