摘要
以注塑成型法制备了尼龙1010及碳纤维(CF)增强尼龙1010复合材料,研究了CF含量和载荷对材料摩擦学性能和磨损机制的影响。结果表明,CF的加入可显著改善尼龙的摩擦学性能,以体积分数为20％的CF增强尼龙1010复合材料的耐磨性能最好。较低的CF含量下复合材料磨损表面主要受到对偶钢环上微凸峰的切削和犁沟作用,较高载荷时发生了热疲劳剥层磨损;随着CF含量增加,复合材料表面在较高载荷时产生明显疲劳断裂,并使对偶钢环产生较剧烈磨损。
A micro injection machine was used to prepare all the specimens of nylon 1010 and carbon fiber (CF) reinforced nylon 1010 composites. The effects of various loads on the tribological properties and wear mechanism of composites were investigated. The results show that CF can considerably improve the tribological properties of nylon 1010 composites and 20 vol. %CF-nylon 1010 has the highest wear resistance in various contents of CF filled in nylon 1010. It was found that the worn surface of nylon composites reinforced with low content of CF was micro-cutting and micro-ploughing by the ridge of the counterface surface under a lower normal load. Comparatively, the dominant wear mechanism was thermo-fatigue wear with peeling off particles while load increased to 400 N. Meanwhile, at a higher content of CF in composites and higher compressive press conditions, fatigue wear with evidently micro-cracking aroused in the rubbing surface. In addition, higher content of CF reinforcement would enhance the severe abrasive wear of counterface iron.
出处
《机械工程材料》
CAS
CSCD
北大核心
2003年第7期14-17,共4页
Materials For Mechanical Engineering
基金
江苏省自然科学基金(BJ98117)
