石墨粒度对纸基摩擦材料摩擦磨损性能的影响

doi:10.3724/SP.J.1077.2011.00638

无机材料学报 ›› 2011, Vol. 26 ›› Issue (6): 638-642.DOI: 10.3724/SP.J.1077.2011.00638 CSTR: 32189.14.SP.J.1077.2011.00638

石墨粒度对纸基摩擦材料摩擦磨损性能的影响

张翔, 李克智, 李贺军, 付业伟, 费杰, 李海亮

(西北工业大学凝固技术国家重点实验室, 西安710072)

收稿日期:2010-08-20 修回日期:2010-11-05 出版日期:2011-06-20 网络出版日期:2011-06-07
作者简介:张翔(1982-), 男, 博士研究生. E-mail: zx521com@126.com
基金资助:
凝固技术国家重点实验室(西北工业大学)博士后基金(08-BZ-2010); 陕西省重大科技创新项目(2008ZKC04-07)

Effect of Graphite Particle Size on Friction and Wear Performance of Paper-based Friction Material

ZHANG Xiang, LI Ke-Zhi, LI He-Jun, FU Ye-Wei, FEI Jie, LI Hai-Liang

(State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China)

Received:2010-08-20 Revised:2010-11-05 Published:2011-06-20 Online:2011-06-07
Supported by:
Research Fund of the State Key Laboratory of Solidification Processing (NWPU)(08-BZ-2010); Shaanxi Grand Technology Innovation Foundation (2008ZKC04-07)

摘要/Abstract

摘要： 采用湿法工艺制备了4种不同石墨粒度的纸基摩擦材料, 利用惯量摩擦试验机研究了石墨粒度对摩擦力矩曲线和动、静摩擦系数及磨损率的影响; 并对不同压力和转速条件下动摩擦系数的变化趋势进行了研究. 利用扫描电子显微镜观察了磨损后纸基摩擦材料的表面形貌. 研究结果表明: 随着石墨粒度的减小, 制动时间增加, 摩擦力矩曲线中间部分趋于平直; 动、静摩擦系数减小, 磨损率降低. 同时, 动摩擦系数随着制动压力和转速的增加而减小. 循环制动过程中, 石墨粒度较小的试样制动稳定性较好. 随着石墨粒度的减小, 摩擦表面形成了润滑性能良好的固体润滑膜, 有利于提高材料的耐磨性能.

关键词: 纸基摩擦材料, 石墨粒度, 摩擦磨损性能

Abstract: Paper-based friction materials containing four different graphite particle sizes were prepared using the wet paper-making process. The effects of graphite particle size on friction performance such as friction torque curves, dynamic friction coefficient, static friction coefficient and wear rate were studied by using an inertia friction tester. Meanwhile, the sensitivity of friction coefficient to braking pressure and rotating speed was also investigated. Worn surfaces of samples were analyzed by using scanning electron microscope. The results show that with graphite particle size decreasing, braking time increases and torque curves become more stable, while friction coefficient and wear rate decrease. The dynamic friction coefficient declines as braking pressure and rotating speed increase. Samples with proper particle size exhibit more stable friction coefficient in the continuous braking process. Lubricating film is formed to lower wear rate in the worn surface as the graphite particles size decreases.

Key words: paper-based friction material, graphite particle size, friction and wear performance

中图分类号:

TB332

张翔, 李克智, 李贺军, 付业伟, 费杰, 李海亮. 石墨粒度对纸基摩擦材料摩擦磨损性能的影响[J]. 无机材料学报, 2011, 26(6): 638-642.

ZHANG Xiang, LI Ke-Zhi, LI He-Jun, FU Ye-Wei, FEI Jie, LI Hai-Liang. Effect of Graphite Particle Size on Friction and Wear Performance of Paper-based Friction Material[J]. Journal of Inorganic Materials, 2011, 26(6): 638-642.

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石墨粒度对纸基摩擦材料摩擦磨损性能的影响

Effect of Graphite Particle Size on Friction and Wear Performance of Paper-based Friction Material

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