摘要
采用销-盘摩擦磨损试验机对制动闸片用碳陶复合材料开展了雨水环境下的载流摩擦磨损试验,研究了不同摩擦条件下碳陶复合材料的摩擦磨损性能。结果表明:在无载流的雨水环境中,随着雨水流量由0增大到1 mL·min^(-1),碳陶复合材料的表面粗糙度显著下降,摩擦因数和磨损率小幅度降低,磨损机理主要为剥落和轻微的氧化磨损;在无雨水的载流条件下,随着电流强度由0增加到100 A,表面粗糙度和摩擦因数均显著下降,磨损率明显升高,主要磨损机理为剥落、磨粒磨损、黏着磨损和电弧烧蚀;相对于单因素作用,在载流和雨水的共同作用下,表面粗糙度和摩擦因数明显降低,但磨损率随着雨水流量或电流强度增加的规律不明显,磨损机理为剥落、氧化磨损、磨粒磨损和黏着磨损。
The current-carrying friction and wear tests of carbon ceramic composite for brake disc were carried out by the pin-disk friction and wear testing machine,and the friction and wear properties of carbon ceramic composite under different friction conditions were studied.The results show that in rainwater environment without current-carrying,with rainwater flow rate increasing from 0 to 1 mL·min^(-1),the surface roughness of carbon ceramic composite decreased significantly,while the friction coefficient and wear rate decreased slightly;the wear mechanism included spalling and slight oxidation wear.Under the current-carrying condition without rainwater,with current intensity increasing from 0 to 100 A,the surface roughness and friction coefficient decreased significantly,and the wear rate increased obviously;the wear mechanism included spalling,abrasive wear,adhesive wear and arc ablation.Compared with those affected by the single factor,the surface roughness and friction coefficient decreased significantly under the combined action of current carrying and rainwater,but the law of the wear rate increasing with the rainwater flow or the current intensity was not obvious;the wear mechanism was spalling,oxidation wear,abrasive wear and adhesive wear.
作者
任育博
彭金方
曹超
唐攀
申长慧
方婧婷
朱旻昊
REN Yubo;PENG Jinfang;CAO Chao;TANG Pan;SHEN Changhui;FANG Jingting;ZHU Minhao(Tribology Research Institute,Traction Power State Key Laboratory,Southwest Jiaotong University,Chengdu 610031,China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2023年第1期93-99,110,共8页
Materials For Mechanical Engineering
关键词
碳陶复合材料
雨水流量
载流磨损
磨损机理
carbon ceramic composite
rainwater flow rate
current-carrying wear
wear mechanism
