汽车活塞销镀Ni-Co合金镀层表面改性及性能研究

发布时间：2018-04-28 19:07

  本文选题：Ni-Co合金 + 表面改性　； 参考：《电镀与精饰》2017年08期

【摘要】：利用电镀技术,在汽车活塞销表面制备Ni-Co合金镀层实现表面改性。概述了活塞销表面改性的工艺过程,观察了表面改性后活塞销的形貌,检测了Ni-Co合金镀层与活塞销基体的结合强度以及表面改性后活塞销的硬度、抗拉强度及耐摩擦磨损性能。结果表明,Ni-Co合金镀层与活塞销基体结合牢固,表面改性后活塞销的表面平整均匀,硬度和抗拉强度均提高,表现出较好的耐摩擦磨损性能。Ni-Co合金镀层有效改善了活塞销的表面状况,使活塞销的硬度提高约17%,抗拉强度提高约7.2%,磨损量和磨损速率分别下降17.5%和17.9%。
[Abstract]:Ni-Co alloy coating was prepared on the surface of piston pin by electroplating technology. The process of surface modification of piston pin was summarized, the morphology of piston pin after surface modification was observed, the bonding strength of Ni-Co alloy coating with piston pin matrix and the hardness, tensile strength and friction and wear resistance of surface modified piston pin were tested. The results show that the Ni-Co alloy coating binds firmly to the piston pin matrix, the surface of the piston pin is flat and uniform after surface modification, and the hardness and tensile strength of the piston pin are improved. The Ni-Co alloy coating shows good friction and wear resistance. The surface condition of piston pin is improved effectively. The hardness of piston pin is increased about 17%, the tensile strength is increased about 7.2%, the wear amount and wear rate are decreased by 17.5% and 17.9%, respectively.
【作者单位】： 无锡商业职业技术学院;
【分类号】：TQ153.2;U464.133.1
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本文编号：1816502