Synergistic Compositions of Colloidal Nanodiamond as Lubricant-additive
Synergistic Compositions of Colloidal Nanodiamond as Lubricant-additive
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DOI：
10.1116/1.3478245
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发表时间：
2010-07-01
影响因子：
1.4
通讯作者：
Shenderova, O.
中科院分区：
文献类型：
--
作者：
Ivanov, M. G.;Pavlyshko, S. V.;Shenderova, O.
报道了爆轰纳米金刚石（DND）与其他润滑剂添加剂在矿物油、润滑脂和聚α -烯烃（PAO）油中的稳定胶体分散体的摩擦学测试结果。报道了DND与聚四氟乙烯（PTFE）、铜纳米颗粒或商业添加剂Vanlube（不含磷的抗磨添加剂）结合的协同效应。使用环对环、轴/衬套和四球测试技术对配方进行了测试。试验结果表明，某些配方的摩擦系数降低80-90%以上，磨损点直径减小约50%，极压破坏载荷增加数倍。当使用DND/PTFE添加剂组合时，观察到强烈的协同效应，摩擦系数急剧降低。研究还表明，使用较小的DND骨料尺寸（10nm与120nm）可以获得更好的pao基油配方的润滑性能。(C) 2010年美国真空学会。(DOI: 10.1116/1.3478245)
Results of tribological testing of stable colloidal dispersions of detonation nanodiamond (DND) in combination with other lubricant additives in mineral oil, greases as well as in polyalphaolefin (PAO) oil are reported. The synergistic effect of combining DND with polytetrafluoroethylene (PTFE), copper nanoparticles or a commercial additive Vanlube (non-phosphor containing anti-wear additive) is reported. Testing of the formulations using ring-on-ring, shaft/bushing and four ball test techniques was performed. The test results reveal more than 80-90% decrease of friction coefficient, about 50% decrease of a diameter of wear spot as well as several times increase of extreme pressure failure load for certain formulations. A strong synergistic effect when using a combination of DND/PTFE additives was observed by a sharp decrease of friction coefficient. It was also demonstrated that the use of smaller DND aggregate size (10nm versus 120nm) resulted in better lubricating performance of PAO-based oil formulation. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3478245]