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1、第36卷第5期摩擦学学报Vol36No52016年9月TribologySept,2016DOI:10.16078/j.tribology.2016.05.004载荷对304不锈钢微动磨损性能的影响范娜1,2,王云霞1*,王秋凤1,2,阎逢元1(1.中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000;2.中国科学院中科院大学,北京100049)摘要:采用SRV-IV微动摩擦磨损试验机,研究了在干摩擦和水介质润滑条件下,载荷对304不锈钢微动磨损行为的影响,用扫描电子显微镜(SEM)和X射线能谱(ED
2、S)对磨损表面形貌和成分进行分析.结果显示:载荷和介质对微动摩擦行为和磨损机理有显著影响.在干摩擦下,载荷明显改变了微动运行区域,当载荷增大到50N时微动运行区域由滑移区变为部分滑移区.摩擦系数和磨痕深度随着载荷的增加依次减小.磨损机理由黏着、磨粒和氧化磨损转变为局部疲劳和轻微氧化.同干摩擦相比,由于水介质的润滑和冷却作用,表面黏着被抑制,摩擦系数显著减小,两接触面间易滑移,部分滑移区消失.随载荷的增大磨痕深度增大,因腐蚀与磨损的交互作用,在海水中的磨痕深度比去离子水中略大.磨损机理主要为磨粒磨损和轻微的腐蚀磨损.关键词
3、:304不锈钢;微动磨损;载荷;介质中图分类号:TG172.2;TH117.1文献标志码:A文章编号:1004-0595(2016)05-0555-07EffectsofLoadonFrettingWearBehaviorsof304StainlessSteelsFANNa1,2,WANGYunxia1*,WANGQiufeng1,2,YANFengyuan1(1.StateKeyLaboratoryofSolidLubrication,LanzhouInstituteofChemicalPhysics,ChineseA
4、cademyofSciences,GansuLanzhou730000,China2.UniversityofChineseAcademyofSciences,Beijing100049,China)Abstract:Thefrettingwearbehaviorsof304stainlesssteelsundervariousloadswereinvestigatedusinganOptimalSRV-IVoscillatingfrictionandweartester.Thewornsurfacesmorpholog
5、iesandcompositionswereinvestigatedusingscanningelectronmicroscopyandenergydispersivespectroscopy.Theresultsindicatethattheloadandfluidhadapronouncedinfluenceonfrettingwearbehaviorsandwearmechanism.Underdryslidingcondition,thefrettingregimesdependedonload,i.e.thef
6、rettingregimesgraduallytransformedfromgrosssliptopartialslipastheloadincreasedto50N.Thefrictioncoefficientandweardepthdecreasedwiththeincreaseofload.Correspondingly,thewearmechanismtransformedfromthecombinationdamageofadhesionwear,abrasivewearandoxidationtolocalf
7、atiguedamageandmildoxidation.Comparedtodryslidingcondition,duetothelubricationofaqueouswater,theadhesionofsurfacewaseffectivelysuppressed,thefrictioncoefficientdecreasedsignificantly,andthecontactsurfacewaspronetoslip,thepartialslipregimedisappeared.Theweardepthg
8、raduallyincreasedwithincreasingloadunderartificialseawater.Thesynergticeffectofabrasionandcorrosionunderartificialseawaterledtogreaterdamagethanthatunderdemoni
