2014铝合金表面Ni-P/金刚石复合镀层的制备和性能  

Study on the Preparation and Performance of Ni-P/Diamond Composite Coatings on 2014 Aluminum Alloy Surfaces

作　　者：宫璇 刘家辰 崔彦 李强[2] GONG Xuan;LlU Jiachen;CUl Yan;LI Oiang(China Petroleum Logging Co.,Ltd.,Xi’an 710000,China;Petro China Changqing Oilfield Company,Xi’an 710000,China)

机构地区：[1]中国石油集团测井有限公司,陕西西安710000 [2]中国石油天然气股份有限公司长庆油田分公司,陕西西安710000

出　　处：《材料保护》2024年第9期148-153,160,共7页Materials Protection

摘　　要：为了提高铝合金表面的耐磨能力,采用电沉积法在2014铝合金表面制备了Ni-P/金刚石复合镀层,利用波长色散X射线荧光光谱分析以及扫描电子显微镜、维氏硬度仪、电化学工作站、摩擦磨损试验机等仪器设备研究了镀层中不同金刚石颗粒含量对镀层的元素组成、表面形貌、显微硬度、腐蚀性能和耐磨性的影响。结果表明,随着镀液中金刚石颗粒添加量从0增加至1.0 g/L,镀层的腐蚀电流密度降低,腐蚀电位升高,显微维氏硬度从526 HV_(0.5)升高至786 HV_(0.5);当金刚石颗粒添加量为1.0 g/L时,镀层的磨损率最低。随着金刚石含量的增加,镀层的磨损机理由疲劳磨损转变为疲劳磨损与黏着磨损的相互作用再转变为黏着磨损。In order to enhanee the wear resistanee of aluminum alloy suraces,Ni-P/diamond composite coatings were prepared on 2014 alumi.num alloy suraces using electroplating method.The elects of varying diamond particle content in the coating on the coating’s elemental compo sition,suface morphology,micrphardnes,corrosion resistance and wear resistance were investigated using wavelength dispersive X-ray fluo rescence spectroscopy,scamning electron microscopy(SEM),Vickers hariness testing,electrochemical workstation and friction-wear testing machine,Results showed that as the concentration of diamond particles in the plating solution imereased from 0 to 1.0 g/L.the corosion curen density deereased and the corosion potential inereased.The micro Vickers hardnes improved from 526 to 786 HV_(0.5).When the diamond parti.cle concentraion was 1.0 g/L,the coating exhibited the lowest wear rate.With the ingrease in diamond content.the wear mechau'sm of the coating transitioned from fatigue wear to a combination of fatigue and adhesive wear,eventually shiting to predominantly adhesive wear.

关 键 词：电沉积 Ni-P/金刚石复合镀层 耐磨性 耐腐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业]