欢迎登录材料期刊网

材料期刊网

高级检索

使用加入纳米SiO2的低温磷化液在低碳钢表面制备了磷化膜,并对其形貌、成分、厚度、粗糙度以及耐蚀性进行表征,研究了纳米SiO2对磷化膜结构和性能的影响。结果表明,纳米SiO2不是磷化膜的主要成分,但是在磷化液中添加纳米SiO2使磷化膜增厚、细化磷化膜晶粒、提高磷化膜致密度,并提高了磷化膜的耐腐蚀性能。当纳米SiO2的加入量为2g/L时,磷化膜在5%NaCl溶液中的耐腐蚀性最好,府蚀电流密度为0.231μA/cm^2。

Under the low temperature conditions,phosphate coating on the surface of mild steel by the addition of nano-SiO_2 in phosphating solution was prepared in this paper.The influence of nano-SiO_2 on structure and performance of phosphate coating was investigated by SEM,XRD,EDS,thickness, surface roughness and corrosion electrochemical testing.The results show that although nano-SiO_2is not main component of phosphate coating,but the coating thickness decreases with increasing the concentration of nano-SiO_2,nano-SiO_2 can reduce the crystal size of coating and increase the density and corrosion resistance of coating.When the nano-SiO_2 concentration is 2 g/L,the best corrosion resistance of phosphate coating is obtained in 3.5%NaCI solution.The corrosion current of phosphating sample was 0.231μA/cm^2 in 5%NaCI solution.

参考文献

[1] D.Weng, P.Jokiel, A.Uebleis, H.Boehni, Corrosion and protection characteristics of zinc and manganese phosphate coatings, Surface and Coatings Technology, 88, 147-156(1996).
[2] E.P.Banczek, P.R.P.Rodrigues, I.Costa, Investigation on the effect of benzotriazole on the phosphating of carbon steel, Surface and Coatings Technology, 201, 3701-3708(2006).
[3] V.Burokas, A.Martuˇsiene, O.Gircene, Influence of fluoride ions on the amorphous phosphating of aluminium alloys, Surface and Coatings Technology., 202, 239-245(2007).
[4] S.M.Tamborim Takeuchi, D.S.Azambuja, A.M.Saliba-Silva, I.Costa, of NdFeB magnets by phosphating with tungstate incorporation, Surface and Coatings Technology, 200, 6826-6831(2006).
[5] A.S.Akhtar, K.C.Wong, K.A.R.Mitchell, The effect of pH and role of Ni2+ in zinc phosphating of 2024-Al alloy Part I: Macroscopic studies with XPS and SEM, Applied Surface Science., 253, 493–501(2006).
[6] 于宝兴, 董首山. FDT磷化液的研制, 腐蚀科学与防护技术, 10(6), 342-346(1998).
[7] G.Bikulcus, V.Burokas, A.Martuˇsiene, E.Matulionis, Effects of magnetic fields on the phosphating process, Surface and Coatings Technology, 172, 139–143(2003).
[8] P. Bala Srinivasan, S. Sathiyanarayanan, C. Marikkannu, K. Balakrishnan, Acceleration of ambient temperature phosphating by an electrochemical pulse technique, Surface and Coatings Technol., 64, 161–165(1994).
[9] P.K.Sinha, R.Feser, Phosphate coating on steel surfaces by an electrochemical method, Surface and Coatings Technology, 161, 158–168(2002).
[10] S.Jegannathan, T.S.N.Sankara Narayanan, K.Ravichandran, S.Rajeswari, Formation of zinc–zinc phosphate composite coatings by cathodic electrochemical treatment, Surface and Coatings Technology, 200, 4117–4126(2006).
[11] Minqi Sheng, Yinyin Wei, Qindong Zhong, The influence of dissolved ozone in a phosphate bath on phosphate coatings on carbon steel, Journal of Coatings Technology and Research, 6, 543–547(2009).
[12] 赵璐璐, 金红, 金彦.镍磷纳米SiO2化学复合镀层耐腐蚀特性研究, 辽宁师范大学学报, 9(27), 288-291(2004).
[13] 雷霆, 李淑英. 纳米Al2O3增强磷化膜耐磨性的研究, 材料保护, 39(4), 16-20(2006).
[14] 张影, 李淑英. Al2O3含量对纳米复合磷化膜组织结构及耐磨性的影响, 表面技术, 37(3), 38-40,74(2008).
[15] Takahiro Namazu, Yoshitada Isono, Quasi-static bending test of nano-scale SiO2 wire at intermediate temperatures using AFM-based technique, Sensors and Actuators A., 104, 78–85(2003).
[16] Kyoung Nam Lee, Kyoung Seob Kim, Nam Hoon Kim, Yonghan Roh, Fabrication of SiO2 nano-dots by block copolymer lithography and liquid phase deposition, Materials Science and Engineering B., 147, 209–212(2008).
[17] Benjaram M. Reddy, Pandian Lakshmanan, Pankaj Bharali, Pranjal Saikia, Dehydration of 4-methylpentan-2-ol over CexZr1-xO2/SiO2nano-composite catalyst, Journal of Molecular Catalysis A: Chemical., 258, 355–360(2006).
[18] S.P.Ramnani, S.Sabharwal, J.Vinod Kumar, K.Hari Prasad Reddy, K.S.Rama Rao, P.S.Sai Prasad, Advantage of radiolysis over impregnation method for the synthesis of SiO2 supported nano-Ag catalyst for direct decomposition of N2O, Catalysis Communications, 9, 756–761(2008).
[19] Vanessa de Freitas Cunha Lins, Geraldo Francisco de Andrade Reis, Carlos Roberto de Araujo, Tulio Matencio, Electrochemical impedance spectroscopy and linear polarization applied to evaluation of porosity of phosphate conversion coatings on electrogalvanized steels, Applied Surface Science., 253, 2875–2884(2006).
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%