Study Of The Wear And Self-repairing Characteristics Of GCr15with Composite Nanoparticles Additives Lubrication Oil

Wear is the major factor that leads to surface damage, component failure and material loss, Lubrication is the most effective way to wear. The process of friction on the worn surface self repairing ability have become a new direction in the development of the lubricating oil, it can prolong the service life of equipment, reduce energy consumption. With the development of Nano-technology, Nano-materials are applied to additives, improving materials anti-wear, anti-friction and self-repairing properties, due to the special performance of the Nano-additive, composite additives on the properties of lubricating oil on various aspects promote more significantly than the single additive, the research of compound additive has become a necessity.Test by using Four-ball Friction and Wear Testing Machine (MRS-10A) was studied. The friction pairs contact in a ball-plane mode, Spherical specimen material is GCr15steel. Test results are affected by changing the frequency, load and other test parameters with different Nano-additives in the lubricating oil. Analyses of GCr15steel’s worn surfaces, wear debris and EDX energy spectrum were carried out by optical microscope, scanning electron microscope and EDX.The paper has the following conclusions through research:(1) Single nanometer additives and composite nanometer additives can reduce the amount of wear, reduce the coefficient of friction, increase the friction reducing performance of GCr15anti-wear, make the GCr15generating self repairing performance.(2) To KunLun L-CKC220load industrial closed gear oil as the contrast group, by comparing the friction curve, coefficient on the rubbed surface was analyzed and EDX energy spectrum analysis, the nanometer titanium nitride additives, nano titanium dioxide and titanium nitride composite additives, nano aluminium nitride and titanium nitride nano composite additive in base oil to do the friction and wear properties of additive and self repairing performance:In the load, temperature, speed and other parameters are same, the friction coefficient between TiN>AlN-TiN>TiN-TiO2, friction properties of lubricating oil anti-wear upgrading: TiN-TiO2>AlN-TiN>TiN, self-repairing performance relationship were TiN-TiO2> AIN-TiN>TiN.(3) Comparative analysis of single additive and compound additives of GCr15anti-wear and friction reducing properties and the effect of the self repairing performance, composite nanoparticles additives on the antiwear and antifriction performance of self-repairing performance is better than the single nanoparticles additive. Easy agglomeration composite additives in different, affecting its performance, this kind of influence in different elements between the apparent, less affected in the same elements.