纳米Al_(2)O_(3)颗粒掺杂对化学镀Ni-Cu-P镀层耐蚀性的影响  

Effect of nano-Al_(2)O_(3) doping on corrosion resistance of electroless Ni-Cu-P coating

作　　者：姚伦芳 杨强 刘定富[2] Yao Lunfang;Yang Qiang;Liu Dingfu(Guizhou Environmental Engineering Assessment Center,Guiyang 550002,China;College of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州省环境工程评估中心,贵州贵阳550002 [2]贵州大学化学与化工学院,贵州贵阳550025

出　　处：《电镀与精饰》2023年第11期27-31,共5页Plating & Finishing

摘　　要：为提高镀锌铁片表面化学镀层Ni-Cu-P的耐蚀性,在镀液中添加纳米Al_(2)O_(3)颗粒制备了Ni-Cu-P-Al_(2)O_(3)复合镀层。采用贴滤纸法、扫描电镜(SEM)及其附带的能谱仪(EDS)、电化学工作站对镀层孔隙率、表面形貌、元素含量及耐蚀性进行测试分析。结果表明,掺杂纳米Al_(2)O_(3)颗粒得到的Ni-Cu-P-Al_(2)O_(3)复合镀层相较于Ni-Cu-P镀层孔隙率降低了0.02 N/cm^(2)、腐蚀电流降低了2.01×10^(-8)A/cm^(2)、腐蚀电位正移了0.015 V。In order to improve the corrosion resistance of electroless Ni-Cu-P coating on galvanized iron sheet,composite Ni-Cu-P-Al_(2)O_(3) coating was prepared by adding nano-Al_(2)O_(3) particles into the plating solution.The porosity,hardness,surface morphology,element content and corrosion resistance of the coating were analyzed by filter paper method,hardness tester,scanning electron microscope(SEM)and its attached energy dispersive spectrometer(EDS),and electrochemical workstation.The results show that the porosity of Ni-Cu-P-Al_(2)O_(3) composite coating doped with nano-Al_(2)O_(3) particles decreases by 0.02 N/cm^(2),the corrosion current decreases by 2.01×10^(-8) A/cm^(2),and the corrosion potential increases by 0.015 V compared with Ni-Cu-P coating.

关 键 词：化学镀 纳米Al_(2)O_(3) 复合镀层 耐蚀性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]