The wear characteristics of impregnated graphite under different paired pairs

Abstract

Abstract: The friction and wear properties of impregnated graphite were explored by TRB³ friction testing machine, and the GCr15 steel ball, Si₃N₄, and Al₂O₃ ceramic ball were used as friction pairs in the form of ball/plane contact. The friction coefficient, wear volume, wear mark contour, and surface morphology of the grinding mark were characterized and analyzed by scanning electron microscope and laser confocal microscope. The friction scratches and wear characteristics of impregnated graphite under different normal loads were explored aiming to establish an energy wear model to explore the changing mechanism of contact state during wear and predict the wear process. The results showed that with the gradual increase of hardness of the upper specimen, the friction coefficient gradually increases under low loads and decreases under high loads. Under different friction pair effects, the surface of graphite presents separately shallow surface wear marks similar to “U”-shaped, “V”-shaped, and “W”-shaped contours, respectively. The main wear mechanisms between graphite and GCr15, Si₃N₄ and Al₂O₃ pairing pairs are adhesive wear, abrasive wear, and slight oxidation wear. Material transfer, peeling, and furrow phenomena are evident between the surfaces of the friction pair.

Key words: impregnated graphite, normal load, wear mechanism, energy dissipation

CLC Number:

TG115.5+8

SONG Wei, LI Kai-min, MA Rong-rong, DING Xue-xing. The wear characteristics of impregnated graphite under different paired pairs[J]. Journal of Lanzhou University of Technology, 2024, 50(2): 9-16.

References

[1] 刘启跃,王文健,何成刚.摩擦学基础及应用 [M].成都:西南交通大学出版社,2015.
[2] 张永军,王九花,李新鹏,等.石墨化钢压缩温变形行为的试验研究 [J].哈尔滨工程大学学报,2021,42(3):433-438.
[3] XU Y X,TU C J,LIU Y L,et al.Superior tribology property of zinc phosphate impregnated graphite block at high-temperature oxidative friction [J].Carbon Letters,2022,32(5):1365-1376.
[4] WANG Z B,FAN J J,ZHAN B.Failure analysis of the aircraft accessories graphite seal ring [J].IOP Conference Series:Earth and Environmental Science,2021,781(2):022059.
[5] ZHOU Y P,DONG Y J,YIN H Q,et al.Characterizing thermal-oxidation behaviors of nuclear graphite by combining O₂ supply and micro surface area of graphite [J].Physical Review B,2018,8(1):13400.
[6] GUO F,TIAN Y,LIU Y,et al.Ultralow friction between cemented carbide and graphite in water using three-step ring-on-ring friction test [J].Wear,2016,352:54-64.
[7] JIA Q,YUAN X Y,ZHANG G Y,et al.Dry friction and wear characteristics of impregnated graphite in a corrosive environment [J].Chinese Journal of Mechanical Engineering,2014,27(5): 965-971.
[8] WANG J L,JIA,Q,YUAN X Y,et al.Experimental study on friction and wear behaviour of amorphous carbon coatings for mechanical seals in cryogenic environment [J].Applied Surface Science.2012,258(4):9531-9535.
[9] LI J F,ZHANG L,XIAO J K,et al.Sliding wear behavior of copper-based composites reinforced with graphene nanosheets and graphite [J].Transactions of Nonferrous Metals Society of China,2015,25(10):3354-3362.
[10] 徐宇轩,谭姣,涂川俊,等.温度、载荷变化对密封用炭石墨材料摩擦磨损性能的影响 [J].碳素,2021,186(1):3-9.
[11] 党兴武,黄建龙,陈生圣.载荷、往复滑动频率及其交互作用对35CrMo/GCr15钢磨损的影响 [J].兰州理工大学学报,2015,41(5):32-36.
[12] 王建磊,张琛,王晓虎,等.N₂O₄环境下液体火箭发动机涡轮泵机械密封浸渍石墨的磨损机理研究 [J].机械工程学报,2019,55(7):119-127.
[13] 应宗霖.浸渍石墨材料与氮化钢配对的摩擦学特性研究 [D].杭州:浙江工业大学,2018.
[14] 张鹏鹏,赵伟刚,董光能.铜基石墨密封材料的摩擦磨损性能研究 [J].西安交通大学学报,2017,51(9):92-97.
[15] 彭旭东,何良杰,江锦波,等.浸酚醛树脂石墨/SiC密封材料摩擦学特性研究 [J].中国机械工程,2021,32(11):1283-1292.
[16] ZHANG G L,LIU Y,GUO F,et al.Friction characteristics of impregnated and non-impregnated graphite against cemented carbide under water lubrication [J].Journal of Materials Science and Technology,2017,33(10):1203-1209.
[17] ZHU Z G,BAI,S,WU J F,et al.Friction and wear behavior of resin/graphite composite under dry sliding [J].Journal of Materials Science and Technology,2015,31(3):325-330.
[18] JIN K J,QIAO Z H,ZHU,S Y,et al.Friction and wear properties and mechanism of bronze-Cr-Ag composites under dry-sliding conditions[J].Tribology International,2016,96:132-140.
[19] WANG Y R,GAO Y M,SUN L L,et al.Effect of physical properties of Cu-Ni-graphite composites on tribological characteristics by grey correlation analysis[J].Results In Physics,2017,7:263-271.
[20] 何敏,王启立,孙智.浸锑石墨摩擦磨损特性研究 [J].润滑与密封,2006(9):155-156.
[21] 杨东亚,田松,任俊芳,等.水润滑条件对UHMWPE复合材料的摩擦行为影响研究 [J].兰州理工大学学报,2022,48(2):49-54.
[22] ZHAO J,HE Y Y,WANG Y F,et al.An investigation on the tribological properties of multilayer graphene and MoS₂ nanosheets as additives used in hydraulic applications [J].Tribology International,2016,97:14-20.
[23] HIRANI H,GOIKAR S S.Formation of transfer layer and its effect on friction and wear of carbon-graphite face seal under dry,water and steam environments [J].Wear,2009,266(11/12):1141-1154.
[24] 胡文颖,李雯,张生光.浸渍磷酸盐石墨与9Cr18Mo不锈钢配副的摩擦磨损性能研究 [J].润滑与密封,2022,47(6):177-183.
[25] WANGY A,LI J X,YAN Y,et al.Effect of surface film on sliding friction and wear of copper-impregnated metallized carbon against a Cu-Cr-Zr alloy [J].Applied Surface Science,2012,258(7):2362-2367.
[26] QIAN J,YUAN X Y,ZHANG G Y,et al.Dry friction and wear characteristics of impregnated graphite in a corrosive environment [J].Chinese Journal Mechanical Engineering,2014,27(5):965-971.
[27] PEARSON S R,SHIPWAY P H.Is the wear coefficient dependent upon slip amplitude in fretting? Vingsbo and Soderberg revisited [J].Wear,2015(330/331):93-102.
[28] LINDROOS M,VALTONEN K,KEPPAINEN A,et al.Wear behavior and work hardening of high strength steels in high stress abrasion [J].Wear,2015,322:32-40.
[29] LESNEVSKIY L N,LYAKHOVETSKIY M A,SAVUSHKINA S V,et al.Fretting wear of composite ceramic coating produced on D16 aluminum-based alloy using microarc oxidation [J].Journal of Friction and Wear,2016,37(3):268-273.
[30] 宋伟,李万佳,俞树荣,等.不同环境介质中TC4合金微动磨损机理研究 [J].兰州理工大学学报,2021,47(4):26-32.
[31] FOUVRY SK,KAPSA P,VINCENT L,et al.An elastic-plastic shakedown analysis of fretting wear [J].Wear,2001,247(1):41-54.