Tribological Behaviors of 3D Needled C/C–SiC and FeSi75 Modified C/C–SiC Brake Pair

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• 作者：Juanli Deng ; Na Li ; Bohan Zheng ; Shangwu Fan ; Liuyang He ; Chuan Yang…
• 关键词：Tribological properties ; Brake pair ; FeSi75 modified C/C–SiC composites ; C/C–SiC composites
• 刊名：Tribology Letters
• 出版年：2017
• 出版时间：June 2017
• 年：2017
• 卷：65
• 期：2
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Tribology, Corrosion and Coatings; Surfaces and Interfaces, Thin Films; Theoretical and Applied Mechanics; Physical Chemistry; Nanotechnology;
• 出版者：Springer US
• ISSN：1573-2711
• 卷排序：65

文摘

Tribological properties of FeSi75 modified C/C–SiC and C/C–SiC mutual-mated disks (FS–SI) were investigated; the results indicated that FS–SI can combine the advantages of FeSi75 modified C/C–SiC self-mated disks (FS–FS) and C/C–SiC self-mated disks (SI–SI). In dry condition, the average kinetic coefficient of friction (µ) of FS–SI is 0.55 ± 0.02, and it is about 83% higher than that of FS–FS. The average wear rate of disks in FS–SI is about 0.57 µm time−1, which is much lower than that of SI–SI (~1.46 µm time−1) and slightly higher than that of FS–FS (~ 0.36 µm time−1). It seems that FS–SI can well meet the requirements of brake applications. Moreover, tribological properties of FS–FS and FS–SI in wet condition were firstly reported, and the µ of FS–FS is higher than that in dry condition. Lubrication effect of water just resulted in a small decrease in the µ of FS–SI in the pre-up braking stage, and it will recover rapidly in the later stage.