刹车片磨屑形貌及物相分析
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摘要
选取了三种车型的报废刹车片,收集表面残留磨屑.借助激光共聚焦显微镜,分析了刹车片表面磨损后的形貌.通过X射线衍射仪、激光粒度分析仪,对磨屑的物相结构和粒径分布进行表征.结果表明:刹车片表面磨损形式为粘着磨损与磨粒磨损共同作用;三种刹车片中均添加有SiO_2和BaSO_4,SiO_2极易出现于磨屑中,与其作为刹车片摩擦材料中的硬质颗粒有关;刹车片表面残留磨屑的D_(50)平均值为26.50μm,粒径小于2.5μm和10μm的质量分数分别为1.71%和32.94%.
Randomly selected many types of scarp automobile brake pads, collected the abrasive debris on surface of brake pad. The friction surfaces and wear characteristics were then observed by LSCM. The morphology and particle size distribution of abrasive debris were analyzed by XRD and LPSA. The result showed that the wear forms of brake pads are adhesive wear and abrasive wear. Various brake pads were added with SiO_(2 )and BaSO_(4 ), SiO_2appeared in the abrasive debris, which was related to its as the hard particle in friction materials of brake pad. The average D_(50) of abrasive debris was 26.50 μm, the average mass fraction with particle size less than 2.5 μm and 10 μm was 1.71% and 32.94%.
Randomly selected many types of scarp automobile brake pads, collected the abrasive debris on surface of brake pad. The friction surfaces and wear characteristics were then observed by LSCM. The morphology and particle size distribution of abrasive debris were analyzed by XRD and LPSA. The result showed that the wear forms of brake pads are adhesive wear and abrasive wear. Various brake pads were added with SiO_(2 )and BaSO_(4 ), SiO_2appeared in the abrasive debris, which was related to its as the hard particle in friction materials of brake pad. The average D_(50) of abrasive debris was 26.50 μm, the average mass fraction with particle size less than 2.5 μm and 10 μm was 1.71% and 32.94%.
引文
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[13] 姚萍屏,熊翔,李世鹏,等.Fe及SiO2对铜基刹车材料摩擦磨损性能的影响机制[J].摩擦学学报,2006(5):478-483.
[14] 凡艳丽,吕亚非.汽车制动过程中摩擦层的作用和形成机制[J].润滑与密封,2007(6):125-128.
[15] 陈洁,熊翔,姚萍屏,等.摩擦面温度对铁基摩擦材料摩擦磨损性能影响机理的研究[J].粉末冶金技术,2004(4):223-227.
[16] GARG B D.Brake wear particulate matter emissions[J].Environmental Science & Technology,2000,34(21):4463-4469.
[17] 王骏杰,马爱斌,王莉莎,等.从性能角度看刹车片的研究现状与动态[J].材料导报,2016,30(17):134-140.
[18] 鲁知音,管琪明,何林,等.无机填料对制动摩擦材料摩擦磨损性能的影响[J].矿产综合利用,2007(6):33-36.
[19] IIJIMA A,SATO K,YANO K,et al.Particle size and composition distribution analysis of automotive brake abrasion dusts for the evaluation of antimony sources of airborne particulate matter[J].Atmospheric Environment,2007,41(23):4908-4919.
[2] 陶双成.关中城市群道路移动源污染物排放清单与减排策略研究[D].西安:长安大学,2016.
[3] 李兵,杨圣岽,曲波,等.汽车摩擦材料现状与发展趋势[J].材料导报,2012,26(S1):348-350.
[4] 刘晓斌,李呈顺,梁萍,等.刹车片用无石棉摩擦材料的研究现状与发展趋势[J].材料导报,2013,27(S1):265-267.
[5] 杨金生.半金属制动材料的研制[J].粉末冶金技术,2001 (3):158-161.
[6] 陈东,梁华军.机动车辆制动摩擦粉尘对环境污染的研究综述[J].润滑与密封,2011,36(5):106-112.
[7] 李凤华,张衍杰,张静,等.隧道中机动车排放颗粒物及无机元素特征[J].环境科学,2018,39(3):1014-1022.
[8] DENIER VAN DER GON H A C,HULSKOTTE J H J,VISSCHEDIJK A J H,et al.A revised estimate of copper emissions from road transport in UNECE-Europe and its impact on predicted copper concentrations[J].Atmospheric Environment,2007,41(38):8697-8710.
[9] PAUL G S,NING X,TOM M D,et al.Airborne brake wear debris:size distributions,composition,and a comparison of dynamometer and vehicle tests[J].Environmental Science & Technology,2003,37(18):4060.
[10] 凡艳丽.半金属摩擦材料摩擦性能评价和摩擦机理研究[D].北京:北京化工大学,2007.
[11] 张庆金,鲍久圣,阴妍,等.制动摩擦材料的研究与发展现状[J].表面技术,2016,45(11):32-40.
[12] 赵东屹.汽车刹车盘散热性及摩擦磨损性能研究[D].大连:大连理工大学,2013.
[13] 姚萍屏,熊翔,李世鹏,等.Fe及SiO2对铜基刹车材料摩擦磨损性能的影响机制[J].摩擦学学报,2006(5):478-483.
[14] 凡艳丽,吕亚非.汽车制动过程中摩擦层的作用和形成机制[J].润滑与密封,2007(6):125-128.
[15] 陈洁,熊翔,姚萍屏,等.摩擦面温度对铁基摩擦材料摩擦磨损性能影响机理的研究[J].粉末冶金技术,2004(4):223-227.
[16] GARG B D.Brake wear particulate matter emissions[J].Environmental Science & Technology,2000,34(21):4463-4469.
[17] 王骏杰,马爱斌,王莉莎,等.从性能角度看刹车片的研究现状与动态[J].材料导报,2016,30(17):134-140.
[18] 鲁知音,管琪明,何林,等.无机填料对制动摩擦材料摩擦磨损性能的影响[J].矿产综合利用,2007(6):33-36.
[19] IIJIMA A,SATO K,YANO K,et al.Particle size and composition distribution analysis of automotive brake abrasion dusts for the evaluation of antimony sources of airborne particulate matter[J].Atmospheric Environment,2007,41(23):4908-4919.