Tribological Properties of Attapulgite/Oil-soluble Nano-Cu Composite Lubricating Additive
XU Yi1, NAN Feng1,2, XU Bin-shi1
1. National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China;
2. Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, China
Abstract：The tribological properties of attapulgite/oil-soluble nano-Cu composite lubricating additive were investigated by a SRV-Ⅳfriction wear tester. The worn surfaces were characterized by SEM and XPS. The results show that the two single additives can both improve the tribological properties of the base oil for a steel-steel friction pair,whereas the composite lubricating additive possesses more excellent friction-reduction and anti-wear properties than the single additives. The higher the load is, the better tribological properties the composite lubricating additive will show. In the effect of composite additive, a compact and smooth protective tribofilm composed by FeS2,Fe2O3,SiO2,Cu,FeOOH and organic compounds was formed on the worn surface.
 汪怀远,林珊,张帅,等. 仿生多孔润滑耐磨CF/PTFE/PEEK复合材料的设计及其摩擦学性能[J]. 材料工程, 2014, (6):45-50. WANG H Y, LIN S, ZHANG S, et al. Biomimetic design and tribological properties of porous lubricating wear-resistance CF/PTFE/PEEK composite[J]. Journal of Materials Engineering,2014, (6):45-50.
 FERNÁNDEZ R E, MINONDO I, GARCÍA C D. The effectiveness of PTFE nanoparticle powder as an EP additive to mineral base oils[J]. Wear, 2007, 262(11-12):1399-1406.
 ZHANG B S, XU Y, GAO F, et al. Sliding friction and wear behaviors of surface-coated natural serpentine mineral powders as lubricant additive[J].Applied Surface Science,2011, 257(7):2540-2549.
 CHOIH Y,LEEY S. Characteristics of moisture-absorbing film impregnated with synthesized attapulgite with acrylamide and its effect on the quality of seasoned laver during storage[J]. Journal of Food Engineering,2013, 116(4):829-839.
 ARNOLD D E, BOHORB F,NEFFH, et al. The first direct evidence of pre-columbian sources of palygorskite for Maya Blue[J]. Journal of Archaeological Science,2012, 39(7):2252-2260.
 张博,许一,王建华,等. 非皂基凹凸棒石润滑脂磨损修复机理研究[J]. 摩擦学学报,2014, 34(6):697-704. ZHANG B, XU Y, WANG J H, et al. Wear repairing mechanism of non-soap baseattapulgitegrease (NBAG)[J]. Tribology, 2014, 34(6):697-704.
 NAN F, XU Y, XU B S, et al. Effect of natural attapulgite powders as lubrication additive on the friction and wear performance of a steel tribo-pair[J]. Applied Surface Science, 2014, 307(15):86-91.
 MORINA A,NEVILLE A, PRIEST M,et al. ZDDP and MoDTC interactions and their effect on tribological performance-tribofilm characteristics and its evolution[J]. Tribology Letters, 2006, 24(3):243-256.
 LISKIEWICZ G, KULA P, NEVILLE A, et al. Hydrogen influence on material interaction with ZDDP and MoDTC lubricant additives[J]. Wear,2013, 297(1-2):966-971.
 YANG G B, CHAI S T, XIONG X J, et al. Preparation and tribological properties of surface modified Cu nanoparticles[J]. Trans Nonferrous Met Soc China,2012, 22(2):366-372.
 WANG X L,YIM Y L,ZHANG G N, et al. Study on antiwear and repairing performances about mass of nano-copper lubricating additives to 45 steel[J]. Physics Procedia,2013, 50:466-472.
 PADGURSKAS J,RUKUIZA R,PROSYCÉVAS I, et al.Tribological properties of lubricant additives of Fe, Cu and Co nanoparticles[J]. Tribology International,2013, 60:224-232.
 张博,许一,王建华.凹凸棒石润滑脂添加剂对45号钢的微动磨损及自修复性能研究[J].石油炼制与化工,2014, 45(11):89-93. ZHANG B, XU Y, WANG J H. Fretting wear and self-reparing properties of C45 steel under lubrication of lithium grease containing attapulgite powder[J]. Petroleum Processing and Petrochemicals, 2014, 45(11):89-93.
 PAULA U A,BEÁTRICE V,THIERRY L M, et al.Action mechanism of WS2 nanoparticles with ZDDP additive in boundary lubrication regime[J]. Tribology Letters, 2014, 56(2):249-258.
 张翼东,闫加省,孙磊,等. 纳米铜润滑油添加剂减摩抗磨及自修复性能[J].机械工程学报,2010, 46(5):74-79. ZHANG Y D, YAN J S, SUN L, et al. Friction reducing anti-wear and self-repairing properties of nano-Cu additive in lubricating oil[J]. Journal of Mechanical Engineering, 2010, 46(5):74-79.