Electrochemical corrosion resistance property of nano Fe-Al/Cr<sub>3</sub>C<sub>2</sub> composite coating

Xiao-ming LIU; Wen MA; Hou-xia YAN; Yue-hong YANG; Ji-wei HAN

doi:10.3788/OPE.20192709.1950

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Electrochemical corrosion resistance property of nano Fe-Al/Cr₃C₂ composite coating

更新时间：2020-08-13

- Electrochemical corrosion resistance property of nano Fe-Al/Cr₃C₂ composite coating
- Optics and Precision Engineering Vol. 27, Issue 9, Pages: 1950-1959(2019)
- 作者机构：
  
  1.内蒙古电力科学研究院, 内蒙古呼和浩特 010020
  2.内蒙古工业大学材料科学与工程学院, 内蒙古呼和浩特 010020
  3.内蒙古自治区薄膜与涂层重点实验室, 内蒙古呼和浩特 010051
  4.内蒙古能源发电金山热电有限公司, 内蒙古呼和浩特 010106
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20192709.1950
  CLC： TB853.29
- Received：21 May 2019，
  
  Accepted：15 July 2019，
  
  Published：15 September 2019
- 稿件说明：
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Xiao-ming LIU, Wen MA, Hou-xia YAN, et al. Electrochemical corrosion resistance property of nano Fe-Al/Cr₃C₂ composite coating[J]. Optics and precision engineering, 2019, 27(9): 1950-1959.
DOI：

Xiao-ming LIU, Wen MA, Hou-xia YAN, et al. Electrochemical corrosion resistance property of nano Fe-Al/Cr₃C₂ composite coating[J]. Optics and precision engineering, 2019, 27(9): 1950-1959. DOI： 10.3788/OPE.20192709.1950.

摘要

研究纳米Fe-Al/Cr

复合涂层的抗电化学腐蚀性能，确定纳米Fe-Al/Cr

团聚颗粒加入量的最佳值。采用三电极系统，对微米Fe-Al/Cr

C复合涂层、纳米Fe-Al/Cr

和分别添加了5%，10%，15%纳米Fe-Al/Cr

团聚颗粒的系列复合涂层抗电化学腐蚀性能进行测试；利用Zview软件拟合交流阻抗谱，从定性到定量拟合对纳米Fe-Al/Cr

系列复合涂层的电化学腐蚀行为进行分析；利用扫描电子显微镜观察腐蚀后涂层表面形貌。添加了5%纳米Fe-Al/Cr

团聚颗粒的复合涂层自腐蚀电位为-0.775 V，自腐蚀电流为0.280 mA/cm

，与其它涂层相比抗电化学腐蚀性能最优；此处添加的5%纳米级Fe-Al/Cr

团聚颗粒的复合涂层的特征主要以均匀腐蚀性为主，而其它Fe-Al/Cr

复合涂层都表现为一定的局部腐蚀特性。Fe-Al/Cr

复合涂层本身的抗电化学腐蚀特性会受到Fe-Al/Cr

团聚颗粒的影响而存在改善的价值。加入量低于最佳值时，涂层因表面质量没有得到改善而抗电化学腐蚀性能较低；加入量高于最佳值时，涂层因表面高活性而导致抗电化学腐蚀性能较低。

Abstract

The electrochemical corrosion resistance properties of nano Fe-Al/Cr

composite coating were tested. The ideal amount of nano Fe-Al/Cr

reunion-granulation particle to be added was determined. Using three-electrode system

the electrochemical corrosion resistance properties of five kinds Fe-Al/Cr

composite coatings were tested. These were micro Fe-Al/Cr

composite coating

nano Fe-Al/Cr

composite coating

and composite coating with additional 5%

10%

and 15% nano Fe-Al/Cr

reunion-granulation particles

respectively. Zview software was used to fit the AC impedance spectrum in order to analyze the electrochemical corrosion resistance action of coatings. SEM was used to analyze the corrosion surface of coatings. The results indicate that the best electrochemical corrosion resistance property of composite coatings was obtained by adding 5% nano Fe-Al/Cr

reunion-granulation particles. Compared with other coatings

the coating with added 5% nano Fe-Al/Cr

reunion-granulation particles has maximum self-corrosion potential of -0.775 V and minimum self-corrosion current of 0.280 mA/cm

. When the content of nano granulated particles is lower than the optimum value

the electrochemical corrosion resistance properties of coatings are because the content of nano granulated particles is too low to improve density and reduce pore size. When the content of nano granulated particles is higher than the optimum value

the electrochemical corrosion resistance property of coatings are nano granulated particles makes surface of coatings showing high chemical energy.

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Electrochemical corrosion resistance property of nano Fe-Al/Cr3C2 composite coating

DOI：10.3788/OPE.20192709.1950

摘要

Abstract

关键词

Keywords

references

Electrochemical corrosion resistance property of nano Fe-Al/Cr₃C₂ composite coating