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内燃机轴瓦-曲轴轴颈摩擦副摩擦学性能研究

Study on the Tribological Behavior of Bushing-Crank Journal Rubbing Pair of Engine
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摘要 介绍了为改善内燃机轴瓦 -曲轴轴颈摩擦副摩擦学性能所研制的电刷镀 Pb- Sn- Cu三元合金工艺和硫氮钒共渗新工艺 ,并研究了其摩擦学性能和配副性 .试验结果和表面形貌分析结果表明 ,电刷镀 Pb- Sn- Cu合金镀层能有效地提高轴瓦的疲劳强度 ,硫氮钒共渗层能明显地改善曲轴轴颈的摩擦学性能 。 Pb Sn Cu ternary alloy plating was prepared on the surface of Cu Pb alloy based bushing by brushing electroplating, while vanadium nitrogen sulfur coatings (coded as VNS coating) was prepared on the surface of crank journal by means of co permeation. The friction and wear behavior of the bushing crank journal pairs with and without surface modifying layers was examined respectively on four test rigs. The fatigue wear surface morphology of the bushes with brush electroplated and electroplated Pb Sn Cu ternary alloy coatings was observed with a scanning electron microscope. As the results, brushed Pb Sn Cu alloy coating effectively improves the fatigue resistance of the Cu Pb alloy based bushing, while the co permeated VNS coating obviously improves the tribological behavior of the crank journal. Moreover, the brush electroplated alloy coating and the co permeated VNS coating have good compatibility.
出处 《摩擦学学报》 EI CAS CSCD 北大核心 2001年第6期491-493,共3页 Tribology
基金 中国科学院兰州化学物理研究所固体润滑国家重点实验室基金资助 ( 970 8)
关键词 内燃机 轴瓦 曲轴轴颈 摩擦学性能 internal combustion bushing crank journal tribological behavior
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