采用化学镀的方法在45号碳钢试样表面制备了稀土铈促进共沉积的 Ni-P-PTFE 复合镀层,利用扫描电子显微镜观察和分析了镀层的表面形貌,研究了稀土铈浓度对复合镀层的表面形貌、镀层的沉积速率、镀层中 PTFE 含量以及镀层防垢性能的影响。结果表明,适量稀土铈的加入使得镀层表面黑色粒子更加密集,即 PTFE 在镀层中的含量增加,在铈浓度为0.04g/L时达到最大；镀层的沉积速率与镀层中 PT-FE含量均随铈浓度的增加而呈现先升后降的趋势,在铈浓度为0.04g/L 时分别达到最大值28.25μm/h 和40.43%,而镀层中PTFE含量也随着沉积速率的增加而升高；铈的加入提高了镀层的防垢性能,镀层的结垢率随着铈对镀层中 PTFE 含量的影响而发生变化,当铈浓度为0.04g/L 时,结垢率最低,仅为9.026g/m2,防垢效果最佳。
Rare earth cerium (Ce)promoting Ni-P-PTFE composite coatings were prepared on 45 # carbon steels specimens by Electroless deposition.The surface morphology of the coatings was analyzed by scanning electron microscope (SEM),effect of Ce concentration in the plating bath on deposition rates,PTFE content and fouling rates of the composite coatings were also investigated.The results indicate that addition of Ce into the bath significantly increases the black particles in the SEM pictures which indicates that the PTFE content of the coatings increases.As increase of Ce concentration in the plating bath,the deposition rates and the PTFE content of the coatings increases firstly,and reaches the maximums of 28.25μm/h and 40.43% in the Ce con-centration of 0.04g/L,respectively,then gradually decreases.And PTFE content of the coatings increases with the increase of the deposition rates.In addition,addition of Ce in the plating bath improves the antifouling property of the coatings,and the fouling rates relate to the PTFE content of the coating which changes with the Ce concentration and decreases to 9.026g/m2 in the Ce concentration of 0.04g/L.
参考文献
| [1] | Gu CD;Lian JS;Li GY;Niu LY;Jiang ZH .High corrosion-resistant Ni-P/Ni/Ni-P multilayer coatings on steel[J].Surface & Coatings Technology,2005(1):61-67. |
| [2] | Balaraju J N;Ezhil Selvi V;William Grips V K et al.Electrochemical studies on electroless ternary and quater-nary Ni-P based alloy[J].Electrochimica Acta,2006,52:1064-1074. |
| [3] | A. Al-Janabi;M. R. Malayeri;H. Muller-Steinhagen .Experimental fouling investigation with electroless Ni-P coatings[J].International Journal of Thermal Sciences,2010(6):1063-1071. |
| [4] | D. Dong;X.H. Chen;W.T. Xiao;G.B. Yang;P.Y. Zhang .Preparation and properties of electroless Ni-P-SiO_2 composite coatings[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2009(15):7051-7055. |
| [5] | Development of electroless Ni-Zn-P/nano-TiO_2 composite coatings and their properties[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2010(24):7377-7383. |
| [6] | Zielińska, K.;Stankiewicz, A.;Szczygie?, I..Electroless deposition of Ni-P-nano-ZrO _2 composite coatings in the presence of various types of surfactants[J].Journal of Colloid and Interface Science,2012:362-367. |
| [7] | Mostafa Alishahi;Seyed Mahmoud Monirvaghefi;Ahmad Saatchi;Seyed Mehdi Hosseini .The effect of carbon nanotubes on the corrosion and tribological behavior of electroless Ni-P-CNT composite coating[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2012(7):2439-2446. |
| [8] | Mafi L R;Dehghanian C .Comparison of the coating properties and corrosion rates in the electroless Ni-P/PT-FE composites prepared by different types of surfactants[J].Applied Surface Sinence,2011,257:8653-8658. |
| [9] | 谢华,陈增晖,陈晓.热处理工艺对Ni-P-PTFE复合镀层组织与性能的影响[J].金属热处理,2009(07):53-57. |
| [10] | 张永忠;孙克宁;姚 枚 .化学镀 Ni-P-PTFE 的工艺及性能[J].功能材料,1999,30(01):88-90. |
| [11] | 刘意春,仵亚婷,胡文彬.（Ni-P）-PTFE化学复合镀工艺的研究[J].电镀与环保,2005(04):27-29. |
| [12] | Zhao Q;Liu Y;Abel EW .Surface free energies of electroless Ni-P based composite coatings[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2005(1/4):441-451. |
| [13] | 周小卫,沈以赴,靳惠明.Ni-P/n-CeO2复合镀层的制备及耐蚀性能研究[J].功能材料,2011(02):305-309. |
| [14] | Zhao Q.;Liu Y.;Muller-Steinhagen H.;Liu G. .Graded Ni-P-PTFE coatings and their potential applications[J].Surface & Coatings Technology,2002(2/3):279-284. |
| [15] | 雷晓蓉;黎永钧 .化学复合镀 Ni-P-PTFE 共沉积机理研究[J].西安交通大学学报,1997,31(03):54-58. |
| [16] | Ashassi-Sorkhabi H;Moradi-Haghighi M;Hosseini MG .Effect of rare earth (Ce, La) compounds in the electroless bath on the plating rate, bath stability and microstructure of the nickel-phosphorus deposits[J].Surface & Coatings Technology,2008(9):1615-1620. |
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