镀镍石墨磁性纳米粒子对ZL109微弧氧化反应过程及膜层耐磨性能影响  

Effects of Nickel Plated Graphite Magnetic Nanoparticles Applied to ZL109 Aluminum Alloy Microarc Oxidation Reaction Process and Wear-resisting Performance

作　　者：惠节[1] 孙长飞[1] 马春生[2] HUI Jie;SUN Changfei;MA Chunsheng(Department of Marine Electrical and Intelligent Engineering,Jiangsu Maritime Vocational and Technical College,Nanjing Jiangsu 211170,China;Department of Marine Engineering,Dalian Maritime University,Dalian Liaoning 116026,China)

机构地区：[1]江苏海事职业技术学院轮机电气与智能工程学院,江苏南京211170 [2]大连海事大学轮机工程学院,辽宁大连116026

出　　处：《润滑与密封》2022年第2期75-81,共7页Lubrication Engineering

基　　金：交通运输部应用基础研究项目(2015-329-225-230)。

摘　　要：为进一步探索微弧氧化反应过程中微弧氧化陶瓷层表面形貌、孔隙率等基本特征的受控机制,创新地提出向微弧氧化电解液中引入磁性粒子,即镀镍石墨磁性纳米粒子,探索磁性添加剂粒子对微弧氧化反应过程及膜层耐磨性能的影响。从膜层表面形貌、横截面形貌、孔隙率、平均孔径、厚度、表面粗糙度、反应能耗及物相组成等方面对微弧氧化反应过程进行了分析,并利用往复式摩擦磨损试验机分析膜层的耐磨性能。结果表明:镀镍石墨磁性纳米粒子通过在电解液磁场中形成的浓度梯度和改善电极表面电解液的导电性,对微弧氧化反应过程产生了较大影响,显著改变了陶瓷层的表面形貌、孔隙率等基本特征,使单位膜层厚度能耗明显下降。综合磨损表面微观形貌和磨损量的分析,发现添加0.8 g/L镀镍石墨磁性粒子制备的陶瓷层具有较好的耐磨性能,且摩擦因数稳定在较低的水平。In order to further explore the control mechanism of the basic characteristics such as surface morphology and porosity of micro-arc oxidation ceramic layers in the process of micro-arc oxidation reaction,magnetic particles,namely Ni-coated graphite magnetic nanoparticles,were innovatively introduced into micro-arc oxidation electrolyte.The influence of the new magnetic additive particles on the micro-arc oxidation reaction process and the wear resistance of the film was investigated.The micro-arc oxidation reaction process was analyzed from the surface morphology,cross-section morphology,porosity,average pore size,thickness,surface roughness,reaction energy consumption and phase composition of the film,and the wear resistance of the film was analyzed by using reciprocating friction and wear testing machine.The results show that through forming the concentration gradient and improving the conductivity of electrolyte,the nickel-coated graphite magnetic nanoparticles have a great influence on the micro-arc oxidation reaction process,significantly changing the surface morphology,porosity and other basic characteristics of the ceramic layer,and significantly reducing the energy consumption per unit film thickness.Based on the analysis of wear surface morphology and wear amount,it is found that the ceramic layer prepared by adding 0.8 g/L nickel-coated graphite magnetic particles has good wear resistance,and the friction coefficient is stable at a low level.

关 键 词：微弧氧化 镀镍石墨磁性纳米粒子 ZL109铝合金 耐磨性能 

分 类 号：TH117.2[机械工程—机械设计及理论] U664.121[交通运输工程—船舶及航道工程]