2010年l2月第35卷第l2期润滑与密封 LUBRICATIONENGINEERING 直流磁场条件下GCr15/W18Cr4V摩擦磨损特性研究曹丽强刘敬超上官宝张永振(河南科技大学材料科学与工程学院河南洛阳471003) 摘要:大气条件下,在改进的MPV一1500型摩擦试验机上研究不同磁场强度下的GCrl5/W18Cr4V配副干滑动摩擦磨损性能,采用扫描电镜(SEM)观察试样磨损后的表面形貌和组织,采用能量分散谱仪(EDS)测定磨损后的表面成分。结果表明:与无磁场条件下相比,有磁场时GCrl5钢销的摩擦因数较小,磨损量较低;随磁场强度的增加,摩擦因数有减少的趋势,而磨损量则先急剧降低,至较低值后呈现缓慢下降的趋势;直流磁场吸附磨屑形成三体磨损,是直流磁场减摩耐磨的主要原因。EDS分析表明:在磁场条件下磨损后GCrl5钢的磨损表面会生成更多的氧,氧化磨损比例增加。关键词:磁场强度;摩擦磨损;氧化中图分类号::A文章编号:0254—0150(2010)12—066—3 ResearchontheFrictionandWearBehaviorof GCr15/icField CaoLiqiang LiuJingchao ShangguanBao ZhangYongzhen (SchoolofMaterialScienceandEngineering,HenanUniversityofScienceandTechnology,LuoyangHenan471003,China) Abstract:icfieldontribologicalbehaviorofGCrl5/W18Cr4Vpairagainstdisc wasinvestigatedwithimprovedMPV一1500typefrictiontestmachineinatmosphere,thewornsurfacemorphologyandor— ganizationwereobservedbyscanningelectronmicroscope(SEM),thewornsurfaceelementswereanalyzedusingenergy dispersivespectrometer(EDS).paredwithnon—icfieldconditions,thefrictioncoeffi— strength,frictioncoefficientshowsthetrendofdecline,andwearratefirstlyreducessharplytoarelativelylowvalue,then —bodywear,whichisthemaincausethat icfieldhasthefunctionoffrictionreducingandwear—,— icfield,thesurfaceofsteelGCrl5hasmoreoxygen,oxidationwesris
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