摘要
提高铁合金表面化学镀Ni-Cu-P层的耐蚀性与耐磨性对拓展其应用领域具有重要意义。在化学镀Ni-Cu-P的基础上,加入纳米ZrO_(2)颗粒,研究复合镀层耐蚀性与耐磨性。以孔隙率作评价指标,用响应面试验设计(RSM-BBD)优化镀液配方,制备Ni-Cu-P/ZrO_(2)复合镀层。用电化学工作站、摩擦磨损试验机等对镀层的耐蚀性与耐磨性进行检测。结果表明:加入1.56 g/L纳米ZrO_(2)后,镀层的孔隙率从0.12 N/cm^(2)降至0.04 N/cm^(2);硬度从479.1HV升至522.5HV;腐蚀电位从-0.637 V正移至-0.6 V;电流密度从2.443×10^(-5)A/cm^(2)降至1.514×10^(-5)A/cm^(2);摩擦因数从0.590升至0.622;磨损率从18.56×10^(-4)mm^(3)/(N·m)降至3.433×10^(-4)mm^(3)/(N·m),磨痕比Ni-Cu-P镀层浅。在镀液中添加纳米粒子ZrO_(2)可显著提高复合镀层的耐蚀性与耐磨性。
Improving the corrosion resistance and wear resistance of electroless Ni-Cu-P plating on ferroalloyis of great significance for expanding its application areas.The addition of ZrO_(2)nanoparticles to the electroless Ni-Cu-P ternary coating was carried out and the variation of corrosion resistance and wear resistance of the composite layer were studied.The Ni-Cu-P/ZrO_(2)composite plating layer was prepared by optimizing the plating solution formulation using response surface experimental design(RSM-BBD)with porosity as the evaluation index.The corrosion resistance and wear resistance of the plated layers were tested using an electrochemical workstation and a friction and wear tester.The results show that the porosity of the plated layer decreases from 0.12 N/cm^(2)to 0.04 N/cm^(2)after the addition of 1.56 g/L nano-ZrO_(2),the hardness increases from 479.1HV to522.5HV,the corrosion potential shifts from-0.637 V to-0.6 V,and the current density increases from 2.443×10^(-5)A/cm^(2)to1.514×10^(-5)A/cm^(2),coefficient of friction increases from 0.590 to 0.622 and wear rate decreases from 18.56×10^(-4)mm^(3)/(N·m)to3.433×10^(-4)mm^(3)/(N·m),and the wear marks are shallower than those of the Ni-Cu-P coating.The addition of nanoparticles ZrO_(2)to the plating solution significantly improves the corrosion and wear resistance of the composite layer.
作者
程一诺
杨强
刘定富
CHENG Yinuo;YANG Qiang;LIU Dingfu(School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2022年第6期119-126,共8页
Ordnance Material Science and Engineering
关键词
化学镀
纳米ZrO_(2)颗粒
响应曲面
耐蚀性
耐磨性
electroless plating
ZrO_(2)nanoparticles
response surface
corrosion resistance
wear resistance
