CAJ | 학술논문

为了研究发动机炭烟微粒对发动机油的润滑特性影响,文章采用炭黑替代发动机炭烟微粒,分别添加在32#机械油和CD15W-40柴油机油中。通过四球摩擦磨损试验机研究不同炭黑添加量对油品抗磨减摩特性的影响。结果表明：炭黑的团聚影响润滑油的黏度,使摩擦系数升高,并充当第三体磨粒磨损的角色。同时,由于炭黑和抗磨剂极性分子的竞争吸附,影响了CD15W-40机油的抗磨性。随着炭黑添加量增加,32#机械油的钢球磨斑直径有减小的趋势,而CD 15W-40油的钢球磨斑直径有增大的趋势;随着炭黑添加量增加,32#机械油的钢球摩擦系数有增大的趋势,而CD 15W-40油的钢球摩擦系数有减小的趋势。通过扫描电镜可推测炭黑阻碍了边界膜的形成。
위료연구발동궤탄연미립대발동궤유적윤활특성영향,문장채용탄흑체대발동궤탄연미립,분별첨가재32#궤계유화CD15W-40시유궤유중。통과사구마찰마손시험궤연구불동탄흑첨가량대유품항마감마특성적영향。결과표명：탄흑적단취영향윤활유적점도,사마찰계수승고,병충당제삼체마립마손적각색。동시,유우탄흑화항마제겁성분자적경쟁흡부,영향료CD15W-40궤유적항마성。수착탄흑첨가량증가,32#궤계유적강구마반직경유감소적추세,이CD 15W-40유적강구마반직경유증대적추세;수착탄흑첨가량증가,32#궤계유적강구마찰계수유증대적추세,이CD 15W-40유적강구마찰계수유감소적추세。통과소묘전경가추측탄흑조애료변계막적형성。
This paper dealt with the influence of soot particles on the lubricity of lubricating oil. The carbon black was select- ed as the substitute of diesel soot particles and added to 32# general lubricating oil and CD 15W -40 diesel lubricating oil re- spectively. The tribological properties of lubricating oils with different addition of carbon black were evaluated by a four - ball tribometer. The morphologies of the worn scars of steel balls were observed by SEM. The results showed that their friction coefficients increase because the soot agglomeration might increase the kinetic viscosity of lubricating oil. The soot particles decrease their wear resistances of lubricating oils due to its role of three - body abrasive particles. Meanwhile,there is a competitive adsorption between the soot particles and polar molecules of antiwear additive, which also influences the anti- wear performance of CD 15W -40 lubricating oil. The wear resistances of 32# lubricating oil become well and the friction re- duction become worse with the increasing of carbon black. However, there is an opposite tendency for CD 15W-40 lubri- cating oil with the increasing of carbon black. It might be attributed from the fact that the carbon black could block the for- mation of antiwear film based on the analyses of SEM and EDS.