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本文以针刺炭纤维整体毡为预制体,采用化学气相渗透法和熔融渗硅法制得炭纤维增强双基体炭/碳化硅(C/C-SiC)摩擦材料;研究了C/C-SiC的干态摩擦磨损行为及机理.研究结果表明:C/C-SiC摩擦材料和30CrMoSiVA合金钢配对摩擦副制动性能稳定,当制动速度从5 000 r/min升至7 500 r/min,摩擦系数由0.33降至0.29,C/C-SiC线磨损率相应由2.01μm/次升至3.40μm/次;C/C-SiC与对偶件的摩擦是犁沟效应和黏着效应共同作用的结果,磨损是磨粒磨损、黏着磨损、氧化磨损和疲劳磨损相互作用的结果.
In this paper, a carbon fiber reinforced carbon / carbon double bond carbon / silicon carbide (C / SiC-SiC) friction material was prepared by chemical vapor infiltration method and melt infiltration silicon method. The effects of C / C-SiC The results show that the friction performance of the C / C-SiC friction material and the 30CrMoSiVA alloy steel is stable. When the braking speed is increased from 5 000 r / min to 7 500 r / min, the friction The coefficient decreased from 0.33 to 0.29, and the wear rate of C / SiC-SiC wire increased from 2.01μm to 3.40μm / time respectively. The friction between C / C-SiC and its counterpart was the result of furrowing effect and adhesion effect. Abrasion is the result of the interaction between abrasive wear, adhesive wear, oxidative wear and fatigue wear.