外加电压对边界润滑下钢/铜摩擦副摩擦磨损的影响

利用球盘式摩擦试验机，针对150SN油润滑下的GCr15/ZCu10Fe3摩擦副，研究了不同极性的外加直流电压对其摩擦系数和磨损状态的影响，并结合磨痕的能谱分析，探讨了外加电压对其摩擦磨损性能的作用机理。     

实用型高性能钢蜗杆副润滑技术的研究

分析了实用型高性能钢蜗杆副润滑技术机理,进行了润滑剂对钢蜗杆传动性能影响的试验研究.结果表明,润滑技术是实现实用型高性能钢蜗杆副传动的关键技术,为钢蜗轮传动的推广与应用提供了依据.     

用齿轮油润滑实现钢蜗杆副传动的试验研究

用齿轮油作润滑剂以实现钢蜗杆副传动为目的,分别对用齿轮油润滑下的钢蜗杆副传动和用铜蜗轮油润滑下的铜蜗杆副传动的传动性能进行了试验研究。结果表明用齿轮油可以实现钢蜗杆副传动的润滑要求。为钢蜗杆副传动的推广与应用提供了可靠的依据。     

钢蜗轮摩擦副边界润滑状态判断及润滑油添加剂选择

使用Johnson和Hooke编制的润滑状态区域图,对实验所用的中心距为120mm钢蜗轮减速器摩擦副的润滑状态进行了计算与判断,根据润滑类型,合理选择了润滑油添加剂。     

水润滑橡胶/镀镍钢配副摩擦磨损机理研究

对水润滑轴承专用橡胶／镀镍钢配副分别在干摩擦、边界润滑条件下用数显式高速环块摩擦磨损试验机进行了摩擦磨损试验，并借助SEM分析了其摩擦磨损机理。结果表明：千摩擦条件下主要为粘着磨损，边界润滑条件下主要为磨粒磨损。     

摩擦副润滑状态可靠性的计算

本文是重新估计润滑状态的一种新的探讨——利用铁谱技术对摩擦界面间存在的磨柱进行观察分析。论证了磨粒对润滑状态的影响及其统计的尺寸分布规律。进而提出润滑状态可靠性的计算方法。     

二氧化碳气氛下钢铜摩擦副摩擦磨损特性研究

应用MMS-1G销盘式高温高速摩擦磨损试验机,研究了二氧化碳气氛条件下CrNiMo钢/H96黄铜配副的干滑动摩擦磨损特性。结果表明:摩擦因数随着载荷和速度的增加而减小;磨损率随着载荷和速度的增加而增加,在逐步增加速度与载荷的过程中,存在着摩擦磨损机制的转变,CrNiMo钢的磨损机制主要表现为粘着磨损和磨粒磨损。     

氧气气氛条件下钢铜摩擦副摩擦磨损特性研究

利用MMS-1G销盘式高温高速摩擦磨损试验机,研究了氧气气氛条件下CrN iMo钢/H96黄铜配副的干滑动摩擦磨损特性,并分析了磨损机制,结果表明:纯氧气气氛条件下,摩擦因数随着载荷和速度的增加而减小;磨损率随着载荷和速度的增加而增加。在逐步增加速度与载荷的过程中,存在着摩擦磨损机制的改变。CrN iMo钢磨损失效机制主要表现为氧化磨损、剥落磨损、粘着磨损和磨粒磨损。     

直链脂肪酸与直链脂肪醇混合对钢—钢和钢—铝摩擦副摩擦磨损性能的影响研究

本文利用四球摩擦磨损试验机和SRV摩擦磨损试验机研究了直链脂肪酸和直链脂肪醇以及其混合物对钢－钢、钢－铝摩擦副的摩擦磨损性能的影响。结果表明,对钢－钢和钢－铝摩擦副的润滑,直链脂肪酸和直链脂肪醇混合物的抗磨性能要优于单独的直链脂肪酸和直链脂肪醇的抗磨性能。     

高速重载下三种固体润滑膜耐磨性的实验研究

用销盘摩擦实验机研究三种固体润滑涂层;喷涂NF-1、粘结PEF及粘结Teflon-S涂层在高速（5.6m/s）、重载（初始接触应力400MPa)干摩擦条件下的摩擦磨损性能。结果表明：这三种涂都具有接近30min的使用寿命,具有较低的摩擦系数和磨损率,提高了抗咬合能力,基点NF-1和Teflon的摩擦系数从0.08分别增加到0.14和0.15。PEF涂层摩擦系数从0.1降低到0.08。     

润滑添加剂对高塑性锌合金摩擦磨损的影响

本文研究了在低速重载条件下，四种润滑油添加剂对高塑性锌合金（ＨＤＺＡ）的摩擦磨损性能的影响。结果表明，ＬＳ和ＢＳ的加入能明显降低ＨＤＥＡ合金的摩擦系数和体积摩损量，提高其减摩性能，显著降低摩擦面的油温，从而可提高锌合金使用的极限温度和压力。     

Sorption of Lubricant Additives by Porous Plastic Retainer Materials

Sorption of additives present in lubricating oils by porous plastic retainer materials was studied by liquid chromatographic experiments. Liquid chromatography columns were packed with finely shredded porous cotton-phenolic and polyimide ball bearing retainer materials. Small aliquots of nonpolar hydrocarbon oils (purified by molecular distillation and prepared to contain additives of various polarities) were individually eluted through, the columns with n-hexane. The eluate from each of the columns was evaporated, and the residues were analyzed for additive content. Atomic absorption and computer-controlled electron-impact mass spectrometry of the eluted samples provided evidence of retention of the lubricant additives in the column. The degree of depletion of additives from the oil samples appears to be a function of the polarities of both the retainer matrix and the additive molecules, and the hydrogen bonding or dipole-dipole interaction resulting therefrom.     

抗磨液压油试验高压泵摩擦副磨损过程分析及其模拟

按高压泵的磨损情况来评定油品质量是抗磨液压油研究的重要内容之一,本文通过建立的试验泵模拟试验方法,对抗磨液夺油试验用高压泵的磨损情况深入研究,此项研究不仅为我国抗磨液压油品质量的评定提供了重要的分析依据,同时也为高压泵摩擦材料的合理选择,磨损机理的分析研究奠定了基础。     

Effect of Thermochemical Treatments on the Sliding Wear Mechanisms of Steels Under Boundary Lubrication

The effect of heat treatment, carburizing and plasma nitriding on the material-removal mechanisms and wear behavior of steels under boundary-lubricated conditions has been studied. A controlled procedure using mild abrasives under a light load was adopted in order to avoid long-term effects from severe wear in the running-in stage of pin-on-disc testing. Electron microscopy of the sliding surfaces showed that wear of the untreated steel took place by abrasive and adhesive mechanisms. Heat treatment by austenitizing, quenching and tempering (through-hardening) reduced the wear rate and carburizing produced a further reduction. The principal wear mechanisms in the both through-hardened and carburized steels was abrasive and delamination wear with adhesive wear being unimportant. Electron microscopy on cross-sections through the sliding surfaces of the carburized and through hardened steels showed extensive plasticity, cracks, and delaminated wear phenomena. The elimination of adhesive wear as a major wear mechanism is attributed to the influence of hardness on junction growth and the emergence of delamination wear to the effect of nano-crystalline carbides on fatigue life. Plasma nitriding resulted in an additional reduction in wear rate and the effective elimination of delamination wear. Electron microscopy on the plasma-nitrided steel revealed the presence of a dispersion of white layer regions, which raised the yield strength but also - resulted in micro-pitting due to a deformation mismatch with the matrix.     

MoSi2/45#钢在油润滑状态下的摩擦学性能研究

在M - 2 0 0型磨损试验机上进行了金属间化合物MoSi2 / 4 5 # 钢的摩擦磨损试验 ,考察了载荷和润滑状态对MoSi2 材料摩擦磨损性能的影响 ,采用扫描电子显微镜 (SEM)和微探针观察了其磨损形貌 ,并分析了其磨损机理。结果表明 :油润滑明显改善了MoSi2 材料的摩擦学性能。MoSi2 材料的磨损机理在低载荷 (5 0～ 80N)下主要表现为疲劳磨损和磨粒磨损 ,高载荷 (12 0N以上 )下以氧化磨损为主。载荷为 15 0N时 ,MoSi2 材料具有较好的综合摩擦磨损性能 ,摩擦系数和磨损率分别为 0 1和 0 0 0 9g·km-1。     

钢蜗轮传动润滑剂的试验研究

本文以实现钢蜗轮传动为目的，在基础油Ｎ１５０中分别加入不同种类的硫系极压添加剂等通过合理的配方配制而成三种润滑剂，对三种润滑剂影响钢蜗轮的传动性能进行了试验研究。同时，在ＴＩＭＫＥＮ试验机上，对三种润滑剂影响钢钢摩擦副的摩擦磨损性能进行了试验研究。     

发动机性能恢复剂作用效果的试验研究

本文对目前市上几种发动机性能恢复作用效果进行了大量的发动机性能试验,证实了此类添加剂的作用效果,并对其作用机理进行了分析。     

冶金行业精轧设备润滑故障分析与改进

本文对冶金行业精轧设备润滑故障进行了分析,通过选用合适的润滑剂进行改进,取得了良好的效果。     

Wear,Friction, and Electrical Noise Phenomena in Severe Sliding Systems

The sliding mechanisms of unlubricated gold and palladium are described. Transfer, roughening, wear, friction, and contact resistance phenomena involve the same discrete events.

With rider-flat geometry, severely Worked transfer particles form a prow-shaped wedge which adheres to the smaller member. Even when rider and flat are different, prow material comes from the larger part. Loss of prow occurs by adhesive weld-back transfer and, to form loose debris, by shearing or fatigue fracture.

Friction rises in the early stages of sliding as prows grow. Soon, back transfer increases hardness of the larger member and friction falls to an equilibrium level. Friction also falls when prows are kneaded into rollers and become loose debris. During these stages, wear rate diminishes.

Contact resistance noise originates in stick-slip, roller formation, surface hardening, and changing composition at the sliding interface when dissimilar contact metals are involved.