丁腈橡胶在硬质颗粒环境下的摩擦磨损特性

doi:10.11868/j.issn.1001-4381.2015.10.013

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摘要

采用销-盘接触方式考察丁腈橡胶/316L不锈钢配副的摩擦磨损性能,探讨有无Al₂O₃硬质颗粒及颗粒尺寸对其摩擦学行为的影响。通过扫描电子显微镜(SEM)和表面轮廓仪分析配副材料的磨痕表面形貌。结果表明:硬质颗粒参与磨损能降低接触副表面的摩擦因数;大尺寸颗粒会加速橡胶的磨损并能嵌入橡胶基体形成微切削效应,而随着颗粒尺寸减小至数十微米时,颗粒的存在反而能减缓橡胶的磨损;但颗粒的介入均会加剧配副金属的磨损、硬质颗粒的犁削作用使钢球磨损表面存在大量的犁沟;此外,无颗粒及不同尺寸颗粒环境下丁腈橡胶/不锈钢摩擦副表现出不同的损伤机制。

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	郑金鹏
	沈明学
	厉淦
	彭旭东

关键词 ：丁腈橡胶, 摩擦磨损, 硬质颗粒, 橡胶密封, 损伤机制

Abstract：

The friction and wear characteristics of acrylonitrile-butadiene rubber/316L stainless steel tribo-pairs were investigated using a sphere-on-disc test device. The influence of Al₂O₃ hard particles and the particle size on the tribological behavior of the tribo-pairs was discussed. The morphology of worn surface was analyzed via scanning electron microscope (SEM) and by using a surface profilometer. The results show that the particles wear can reduce the friction coefficient of the contact pairs; Large particles can accelerate the wear of rubber and large particles can be embedded into the rubber matrix,resulting in micro cutting effect, however, as particle size decreases to about dozens of microns, the existence of particles can mitigate the wear of rubber; All the particles embedded in the rubber matrix can aggravate the wear of metal counterpart and lots of furrows can be observed on metal worn surface caused by the ploughing effect of hard particles; In addition, the NBR/stainless steel tribo-pairs exhibit different damage mechanism under conditions of no particles and particles with different size.

Key words： acrylonitrile-butadiene rubber friction and wear hard particle rubber seal damage mechanism

收稿日期: 2014-07-21 出版日期: 2015-10-17

基金资助:国家重点基础研究发展规划项目(973) (2014CB046404);国家自然科学基金(51305398);浙江省自然科学基金(LQ13E050013);浙江省教育厅资助项目(Y201329543)

通讯作者: 沈明学 E-mail: shenmx@zjut.edu.cn

作者简介: 沈明学(1982-),男,讲师,博士,微动摩擦学及表面工程,联系地址:浙江省杭州市潮王路18号浙江工业大学机械工程学院化工机械研究所(310032),E-mail: shenmx@zjut.edu.cn

引用本文:

郑金鹏, 沈明学, 厉淦, 彭旭东. 丁腈橡胶在硬质颗粒环境下的摩擦磨损特性[J]. 材料工程, 2015, 43(10): 79-84.
Jin-peng ZHENG, Ming-xue SHEN, Gan LI, Xu-dong PENG. Friction and Wear Characteristics of Acrylonitrile-butadiene Rubber Under Hard Particles Condition. Journal of Materials Engineering, 2015, 43(10): 79-84.

链接本文:

http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.10.013 或 http://jme.biam.ac.cn/CN/Y2015/V43/I10/79

Fig.1 球-平面接触摩擦学试验装置结构示意图

Fig.2 试验用Al₂O₃磨粒的典型SEM形貌(240目颗粒)

Fig.3 不同磨粒粒度下摩擦因数随磨损时间的演变

Fig.4 不同磨粒粒度下橡胶磨损量
(a)和磨损率(b)随磨损时间的变化

Fig.5 配副钢球在不同粒度磨粒下的磨损比值K随运行时间的变化

Fig.6 150目颗粒环境下橡胶磨损表面的SEM照片
(a)、Al元素分布(b)及局部磨损区的EDX能谱曲线(c)(采样位置见(a)中A)

Fig.7 150目颗粒环境下对磨副钢球磨损表面的SEM照片

Fig.8 600目Al₂O₃颗粒环境下橡胶
(a)及钢球(b)磨损表面的SEM照片

Fig.9 无颗粒和不同颗粒尺寸下丁腈橡胶磨损表面的二维截面形貌

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