物理化学学报 >> 2007, Vol. 23 >> Issue (10): 1617-1621.doi: 10.3866/PKU.WHXB20071024

研究简报 上一篇    下一篇

电沉积Fe-W-ZrO2纳米复合镀层的结构与腐蚀行为

马叙; 姚素薇; 张卫国; 王宏智   

  1. 天津大学化工学院杉山表面技术研究室, 天津 300072; 天津理工大学材料学院纳米器件重点实验室, 天津 300191
  • 收稿日期:2007-05-11 修回日期:2007-07-31 发布日期:2007-10-01
  • 通讯作者: 姚素薇 E-mail:yaosuwei@263.net

Structure and Corrosion Behavior of Electrodeposited Fe-W-ZrO2 Nano-composite Coatings

MA Xu; YAO Su-Wei; ZHANG Wei-Guo; WANG Hong-Zhi   

  1. SUGIYAMA Laboratory of Surface Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China; Nano-parts Key Laboratory, Material Science and Engineering school, Tianjin University of Technology, Tianjin 300191, P. R. China
  • Received:2007-05-11 Revised:2007-07-31 Published:2007-10-01
  • Contact: YAO Su-Wei E-mail:yaosuwei@263.net

摘要: 采用复合电沉积工艺制备了Fe-W-ZrO2纳米复合镀层. 分别用扫描电子显微镜(SEM)、扫描电子显微镜附带能谱仪(EDS)、X射线衍射(XRD)、恒电位仪等技术较系统地研究了Fe-W-ZrO2纳米复合镀层的表面形貌、成分、结构、硬度和耐蚀性. 结果表明, 复合镀层的质量组成为Fe 38.3%(w)、W52.7%(w)、ZrO2 9.0%(w) 时, 在ZrO2纳米粒子的弥散强化作用下, Fe-W非晶合金镀层的裂纹状况得到明显改善, 而且复合镀层成分分布均匀, 组织致密, 结构呈现明显的非晶态特征;复合镀层比Fe-W合金有更高的显微硬度;30 ℃下, Fe-W-ZrO2纳米复合镀层在3.5%(w)NaCl和0.5 mol·L-1 H2SO4溶液中的耐蚀性较Fe-W非晶合金镀层明显提高.

关键词: 电沉积, Fe-W 合金, 非晶态, 纳米复合镀层, 耐蚀性

Abstract: New Fe-W-ZrO2 nano-composite layers were prepared by composite electrodeposition technology. The morphology, composition, structure, hardness and corrosion resistance properties of the coatings were systematically characterized by means of SEM, EDS, X-ray diffraction and potentiostat methods. The results showed that when the mass composition of the obtained Fe-W-ZrO2 composite coating was Fe 38.3%(w)、W 52.7%(w)、ZrO2 9.0%(w), the crack condition of Fe-W alloy coatings was improved markedly by the dispersion strengthening effect of the ZrO2 nano-particle. Meanwhile, the composite coatings presented an obvious amorphous characteristics, compact structure, and uniform composition. In comparison with Fe-W alloy coatings, not only the hardness of the composite coatings was higher, but also the corrosion resistance was enhanced evidently in 3.5%(w) NaCl and 0.5 mol·L-1 H2SO4 solution at 30 ℃.

Key words: Electrodeposition, Fe-W alloy, Amorphous, Nano-composite coatings, Corrosion resistance

MSC2000: 

  • O646