摘要
为了选择与PEEK及其CF改性复合材料更合适的配副材料以适应苛刻的干摩擦工况,本工作选用PEEK、CF/PEEK复合材料为研究对象,利用UMT-2型多功能摩擦磨损试验机在不同速度、载荷下对PEEK、CF/PEEK复合材料与Al 2O 3球、GCr15球、Si_(3)N_(4)球三种不同对磨球所组成的摩擦副进行干摩擦试验。结果表明:CF填充改性PEEK基复合材料,提高了复合材料的摩擦学性能。研究速度、载荷对其摩擦学性能的影响发现,三种对磨球所组成的摩擦副在固定载荷高速时或者固定速度重载时仍保持良好的摩擦磨损性能。三种对磨球中,GCr15轴承钢球与PEEK、CF/PEEK组成的摩擦副摩擦系数最大,磨损率最高;Si_(3)N_(4)陶瓷球的摩擦副摩擦系数最小,磨损率最低。当GCr15-CF/PEEK摩擦副在50 N、400 r/min高速时,摩擦系数为0.275,在90 N、300 r/min重载下,摩擦系数为0.254;当Si_(3)N_(4)-CF/PEEK摩擦副在50 N、400 r/min高速时,摩擦系数为0.265,在90 N、300 r/min重载下,摩擦系数为0.231。GCr15-CF/PEEK摩擦副盘试样在高速高载的苛刻工况下发生了严重的磨粒磨损和黏着磨损,而Si_(3)N_(4)-CF/PEEK摩擦副盘试样在高速高载的苛刻工况下主要是磨粒磨损和轻微的黏着磨损。
In order to select the matching materials more suitable for PEEK and CF modified composite materials to adapt to harsh dry friction conditions,this paper selected PEEK and CF/PEEK composite materials as the research object.The dry friction tests of PEEK,CF/PEEK composite and Al_(2)O_(3) ball,GCr15 ball and Si_(3)N_(4)ball are carried out by filling modified PEEK matrix composites improved the tribological properties of the composites.By studying the effects of speed and load on the tribological properties,it is found that the friction pairs composed of three kinds of grinding balls still maintain good tribological and wear properties under fixed load and high speed or fixed speed and heavy load.The friction coefficient and wear rate of GCr15 bearing steel ball with PEEK and CF/PEEK are the highest.Si_(3)N_(4)ceramic ball friction pair has the lowest friction coefficient and the lowest wear rate.The friction coefficient of GCr15-CF/PEEK friction pair is 0.275 at 50 N and 400 r/min,and 0.254 at 0 N and 300 r/min under heavy load.The friction coefficient of Si_(3)N_(4)-CF/PEEK friction pair is 0.265 at high speed of 50 N and 400 r/min,and 0.231 at heavy load of 90 N and 300 r/min.The samples of GCr15-CF/PEEK friction secondary disk have severe abrasive wear and adhesive wear under the harsh working conditions of high speed and high load,while the samples of Si_(3)N_(4)-CF/PEEK friction secondary disk mainly have abrasive wear and slight adhesive wear.
作者
谢金梦
逄显娟
赵若凡
刘亚婷
黄素玲
王帅
张永振
XIE Jinmeng;PANG Xianjuan;ZHAO Ruofan;LIU Yating;HUANG Suling;WANG Shuai;ZHANG Yongzhen(National United Engineering Laboratory for Advanced Bearing Tribology,Henan University of Science and Technology,Luoyang 471023,Henan,China;School of Chemistry&Chemical Engineering,Henan University of Science and Technology,Luoyang 471023,Henan,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2024年第16期269-277,共9页
Materials Reports
基金
国家自然科学基金(92266205,52105181)
宁波市重点研发计划暨“揭榜挂帅”(2022Z050)
河南科技大学大学生研究训练计划项目(2022183)。
