Floating catalyst chemical vapor infiltration of nanofilamentous carbon reinforced carbon/carbon composites-Tribological behavior and wear mechanism

被引：12

作者：

Deng, Hailiang ^{[1
]}

Li, Kezhi ^{[1
,2
]}

Cui, Hong ^{[2
,3
]}

Li, Hejun ^{[2
]}

He, Yizhu ^{[1
]}

Zheng, Jinhuang ^{[3
]}

Song, Guangsheng ^{[1
]}

机构：

[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

[3] Xian Aerosp Composite Res Inst, Xian 710025, Shaanxi, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2018年 / 121卷

基金：

中国国家自然科学基金;

关键词：

Carbon/carbon composites; Nanofilamentous carbon; Tribological behavior; Wear mechanism; C/C COMPOSITES; MICROSTRUCTURE; DENSIFICATION;

D O I：

10.1016/j.triboint.2018.01.048

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Nanofilamentous carbon (NFC) reinforced carbon/carbon composites were produced by floating catalyst chemical vapor infiltration. The study on the tribological properties showed that, the average friction coefficient and wear rate decreased firstly before an increase with the rising catalyst content from 0 to 1.2 wt% and treatment temperature from 2100 to 2500 degrees C. The composites exhibited low wear rate and stable friction coefficient with the catalyst at 0.5-0.8 wt% and treatment of 2300 degrees C, due to the high physical and mechanical properties. The wear increase for 1.2 wt% catalyst and treatment of 2500 degrees C arose from the isotropic pyrocarbon and limited NFC growth and the strength degradation, respectively. High braking pressure and energy resulted in wear aggravation by the rapid ejection of wear debris and high oxidation.

引用

页码：231 / 240

页数：10

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