聚合添加剂的磨损性能试验研究

本文通过试验,并使用傅立叶红外光谱和扫描电子显微镜,研究了原位聚合膜的形成及影响聚合膜形成的因素,在２００ＳＮ（４６＃）精制矿物油中添加二聚酸／司苯－８０,由于在试球表面有聚酯膜生成,比不加的基础油磨痕直径减小５０％,接触疲劳寿命比未加添加剂的高１．４倍。     

有机钼复合添加剂摩擦磨损性能的研究

以合成的有机钼与碱性石油磺酸钙按一定的配比，制备了复合添加剂加入到基础润滑油中，在四球摩擦试验机上测试了其摩擦磨损性能。结果表明，这种复合添加剂可使基础油的摩擦系数显著降低，可较大地提高基础油的承载能力和抗磨损性能，并有效地抑制温升。     

在十六烷中聚合添加剂磨损性能的实验研究

在摩擦表面形成原位聚合膜,减少金属损伤,提高抗磨强度,用十六烷作为载体,加入可聚合添加剂.并在实验基础上探讨了原位聚合膜的减磨机理。     

润滑油添加剂—有机钼化合物的摩擦磨损性能研究

本文在四球摩擦损试验机上测试了作者合成的一种油溶性有机钼化合物添加剂的摩擦磨损性能。研究了添加剂浓度、时间等对该添加剂作用效果的影响。对其抗极压和时效特性进行了研究。结果表明：该有机钼添加剂是一种具有优良的减摩，抗磨、抗极压性能的油溶性添加剂。特别是对放置一年后的油样测试结果表明该添加抗氧化稳定性也较好，具有推广应用的价值。     

润滑油添加剂对聚合物材料摩擦磨损性能的影响研究

利用MM－200型磨损试验机考察了ZDDP对聚合物材料（PTFE、PI及MCPA）－GCr15轴承钢摩擦副摩擦磨损性能的影响。研究发现，液体石蜡及含ZDDP的液体石蜡润滑均可大幅度改善聚合物材料的摩擦磨损性能，且使其摩擦系数比干摩擦时降低一个数量级，摩擦副表面的ZDDP吸附膜均在不同程度上提高聚合物材料的耐磨性，但其对聚合物材料的摩擦性能影响不大。     

润滑油添加剂对聚合物及其复合材料摩擦磨损性能的影响

利用MHK-500型环-块磨损试验机研究了二烷基二硫代磷酸锌(ZDDP)对几种聚合物及其复合材料-金属摩擦副油润滑摩擦磨损性能的影响。结果表明,液体石蜡中的ZDDP对尼龙66(PA66)及聚酰亚胺(PI)-GCr15轴承钢摩擦副的摩擦系数影响不大,但却使聚四氟乙烯(PTEE)及其复合材料-GCr15轴承钢摩擦副的摩擦系数略有降低。PTEE及其复合材料-GCr15轴承钢摩擦副表面的ZDDP吸附膜具有一定的抗磨作用,它大幅度降低了Pb、PbO及MoS     

聚合添加剂的复合试验研究

在46#润滑油中加入聚合膜单体、极压剂ZDDP和硫化异丁烯不仅可以在摩擦过程中的摩擦表面形成原位聚合膜，提高了磨表面的抗胶合、抗疲劳能力，而且还能明显地降低摩擦和磨损。结果表明：优选聚合膜最佳添加剂配方，PB值提高1.55倍达1666N，PD值提高1.67倍达4920N。     

环烷酸稀土化合物作为润滑油添加剂的摩擦磨损性能

用四球摩擦磨损试验机考察了环烷酸稀土(REN)在26#白油中的摩擦学性能，并与当前普遍使用的抗磨剂ZDDP进行了比较，对REN与硫系、磷系润滑油添加剂的复配效果以及它们的摩擦磨损机理也进行了探讨。     

搅拌摩擦焊接头摩擦磨损性能研究

在MM-200型摩擦磨损试验机上分别试验了LF2铝合金搅拌摩擦焊接接头焊缝区和母材的摩擦磨损性能。通过测定失重量和摩擦力矩的波动情况,得出了在不同的工艺参数条件下试样的抗磨损性和摩擦因数的变化规律。实验结果表明：搅拌摩擦焊接头的摩擦磨损性能明显优于母材,当正压力从50N增加到106N时,母材的失重量增加近6倍,母材的失重量在同等垂直载荷的情况下是焊缝的10-20倍。实验还表明搅拌摩擦焊接接头的摩擦力矩较小并且波动平缓。搅拌摩擦焊接头区域的磨损机制从磨粒磨损方式转变为疲劳磨损方式。     

SPF复合自润滑材料摩擦磨损性能的研究

介绍了一种新型的ＳＰＦ复合自润滑材料,试验结果表明,该材料具有优良的摩擦磨损性能和高的承载能力。某些性能优于ＤＵ材料,尤其在高温条件下,仍能保持较好的耐磨性和较长的使用寿命,对其减磨机理也作了探讨。     

润滑油添加剂对轴承钢球滚动接触疲劳寿命的影响

利用自制的球—棒疲劳试验机研究了4种添加剂对GCrl5钢球接触疲劳性能的影响，并借助于扫描电镜分析了不同添加剂对钢球接触疲劳的作用机理。结果表明，4种添加剂都不同程度地提高了GCrl5钢球的接触疲劳寿命，其中以含磷的极压添加剂T305和含有活性基团的降凝剂仍旧效果为佳。     

Friction and Wear Behavior of Zinc Dialkyldithiophosphate Additive

A method has been developed for monitoring the film-forming properties of antiwear additives in rolling-sliding, lubricated contacts. This makes it possible to study both the kinetics of reaction film growth and also the evolution of the film morphology as a function of rubbing time. The technique has been applied to investigate the behavior of a zinc dialkyl-dithiophosphate (ZDDP) additive solution and to correlate this with simultaneous friction and wear measurements.

The results show that ZDDP forms a thick, solid-like, reaction film in the rubbing tracks, with negligible film growth outside of the track. This film is extremely effective in preventing metal-metal contact. However the film is unevenly-distributed, with its roughness oriented in the direction of sliding. This directional roughness inhibits the entrainment of fluid film in the mixed lubrication regime, increases the proportion of load supported by solid-solid contact and consequently results in the high friction often associated with the use of ZDDP additives.     

汽车发动机机油添加剂减摩节能效果的试验研究

本文通过对汽车发动机缸套与活塞环摩擦副试样在机油中含与不含添加剂的润滑条件下进行静摩擦系数测定与快速磨损试验以及发动机台架负荷特性对比试验,探讨了车用发动机机油添加剂的减摩节能效果。     

含硼、铜润滑油添加剂的摩擦学性能

四球实验和演示仪实验表明,含有硼,铜等元素的润滑油添加剂具有十分优良的极压和抗磨性能,且在高载荷条件下其抗磨性能尤为突出。该添加剂还能有效地防止油品的氧化,减少摩擦引起的温升。硼、铜复合添加剂的上述性能均优于所评价的市售同类品。     

激光微造型表面摩擦磨损性能研究

采用声光调Q二级管泵浦固体光源（DPSS）Nd：YAG激光器对缸套试件表面进行了,微造型州纹加工。在往复式活塞环-缸套摩擦磨损模拟试验机上进行了激光造型缸套试件与未造型光滑缸套试件的摩擦磨损性能对比试验研究。试验结果表明,在重载高速条件下,激光网纹试件与未造型试件相比,摩擦因数降低23％,磨损量降低66％。说明激光网纹沟槽具有贮油、积屑和动压润滑作用,同时激光加工的网纹淬火效应也有利于提高支承表面的耐磨抗擦伤性能。     

提高滚子的抗冲击性能研究

研究了提高冷墩滚子的抗击疲劳寿命的改进方法.试验研究结果表明:用六工位冷墩机代替五工位冷墩机增加挤孔工艺,减小了滚子成形后的内部组织应力,消除滚子内壁成形时产生的台阶和撕裂凹坑,经热处理强化后,滚子抗冲击疲劳寿命明显提高.     

几种复合添加剂在聚醚中的摩擦学行为研究

考察了在聚醚(SDM-02C)中分别加入不同质量分数的HL-343与国际品牌Hitec-343、Mobil-252三种复剂的极压抗磨性，初步探讨了添加剂的作用机理。结果表明，国产的HL-343复剂最大无卡咬负荷较高，低载长磨磨斑小、痕迹轻，主要原因是由于复剂在摩擦中游离出的活性磷元素生成了抗剪切强度很低的薄膜，减少了摩擦磨损；HL-343综合抗磨性能优于两种进口高性能添加剂Hitec-343和Mobil-252，HL-343复剂完全可以取代进口同类产品。     

Effects of Sulfur Additive EP in Ester Coolants during Friction with CBN

A study was undertaken to investigate the effects of the EP additives during tribological tests using a CBN tool against steel. Ester oil with and without sulfur additive were used as lubricants in a tribometer. Tribochemical interactions between the S additive and steel have been investigated under boundary lubrication conditions by SEM and EDX analysis. The relative abundance of different elements on the surface of the CBN tools, which are present in the workpiece material such as Fe (iron) and Cr (chromium), suggests that adhesion occurred when the ester oil without sulfur additive was tested. Tribochemical interactions between the additive and the steel could be observed when using the ester oil containing the sulfur additive. These interactions contribute to the formation of a uniform layer on the CBN tool. This layer is composed by S (sulfur), Fe, and O (oxygen). The presence of these elements indicate that FeO (iron oxide) and FeS (iron sulfide) were formed.     

Friction and Wear Performance of Boron Doped,Undoped Microcrystalline and Fine Grained Composite Diamond Films

Chemical vapor deposition(CVD) diamond films have attracted more attentions due to their excellent mechanical properties. Whereas as-fabricated traditional diamond films in the previous studies don’t have enough adhesion or surface smoothness, which seriously impact their friction and wear performance, and thus limit their applications under extremely harsh conditions. A boron doped, undoped microcrystalline and fine grained composite diamond(BD-UM-FGCD) film is fabricated by a three-step method adopting hot filament CVD(HFCVD) method in the present study, presenting outstanding comprehensive performance, including the good adhesion between the substrate and the underlying boron doped diamond(BDD) layer, the extremely high hardness of the middle undoped microcrystalline diamond(UMCD) layer, as well as the low surface roughness and favorable polished convenience of the surface fine grained diamond(FGD) layer. The friction and wear behavior of this composite film sliding against low-carbon steel and silicon nitride balls are studied on a ball-on-plate rotational friction tester. Besides, its wear rate is further evaluated under a severer condition using an inner-hole polishing apparatus, with low-carbon steel wire as the counterpart. The test results show that the BD-UM-FGCD film performs very small friction coefficient and great friction behavior owing to its high surface smoothness, and meanwhile it also has excellent wear resistance because of the relatively high hardness of the surface FGD film and the extremely high hardness of the middle UMCD film. Moreover, under the industrial conditions for producing low-carbon steel wires, this composite film can sufficiently prolong the working lifetime of the drawing dies and improve their application effects. This research develops a novel composite diamond films owning great comprehensive properties, which have great potentials as protecting coatings on working surfaces of the wear-resistant and anti-frictional components.