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中国腐蚀与防护学报  2020, Vol. 40 Issue (1): 57-62    DOI: 10.11902/1005.4537.2019.223
  研究报告 本期目录 | 过刊浏览 |
喷射电沉积Ni-P-BN(h)-Al2O3复合镀层的耐腐蚀性能研究
杨寅初1,傅秀清1,2(),刘琳1,马文科1,沈莫奇1
1. 南京农业大学工学院 南京 210031
2. 江苏省智能化农业装备重点实验室 南京 210031
Electrochemical Corrosion of Ni-P-BN(h)-Al2O3 Composite Coating Deposited by Spray Electrodeposition
YANG Yinchu1,FU Xiuqing1,2(),LIU Lin1,MA Wenke1,SHEN Moqi1
1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
2. Key Laboratory of Intelligence Agricultural Equipment of Jiangsu Province,Nanjing 210031, China
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摘要: 

为了提高45钢零件的使用寿命,采用喷射电沉积在其表面制备了Ni-P-BN(h)-Al2O3复合镀层。通过扫描电镜 (SEM) 检测了复合镀层的表面形貌,利用电化学工作站研究了复合镀层的耐腐蚀性能。结果表明,在喷射电压22~28 V的范围内,随着电压的增大,Ni-P-BN(h)-Al2O3复合镀层的耐腐蚀性能先提升后降低;在喷射电压为25 V时,复合镀层的耐腐蚀性能最好;在喷射间隙1.6~2.0 mm的范围内,随着间隙的增大,Ni-P-BN(h)-Al2O3复合镀层的耐腐蚀性能逐渐提升,当喷射间隙为2.0 mm时,复合镀层的耐腐蚀性能最好。

关键词 喷射电沉积Ni-P-BN(h)-Al2O3复合镀层耐腐蚀性    
Abstract

Ni-P-BN(h)-Al2O3 composite coating was prepared on the surface of 45 steel parts by spray electrodeposition technology. The surface morphology of thecomposite coating was characterized by scanning electron microscopy (SEM). The corrosion resistance of the composite coating was studied by electrochemical workstation. Results showed that with the increase of the applied voltage within arrange of 22~28 V, the corrosion resistance of the composite coating was enhanced at first and then decreased. Among others, the composite coating deposited at voltage of 25 V presented the best corrosion resistance. While the corrosion resistance of the composite coating was enhanced gradually with the increase of the gap from 1.6 mm to 2.0 mm between injection nozzle to the workpiece, and the composite coating had the best corrosion resistance when prepared with the gap of 2.0 mm.

Key wordsjet-electrodeposition    Ni-P-BN(h)-Al2O3 composite coating    corrosion resistance
收稿日期: 2019-05-07     
ZTFLH:  TG174.44  
基金资助:国家大学生创新训练项目(20181037088);南京农业大学大学生创新项目训练计划(1830B18)
通讯作者: 傅秀清     E-mail: fuxiuqing@njau.edu.cn
Corresponding author: Xiuqing FU     E-mail: fuxiuqing@njau.edu.cn
作者简介: 杨寅初,男,1998年生,本科生

引用本文:

杨寅初,傅秀清,刘琳,马文科,沈莫奇. 喷射电沉积Ni-P-BN(h)-Al2O3复合镀层的耐腐蚀性能研究[J]. 中国腐蚀与防护学报, 2020, 40(1): 57-62.
Yinchu YANG, Xiuqing FU, Lin LIU, Wenke MA, Moqi SHEN. Electrochemical Corrosion of Ni-P-BN(h)-Al2O3 Composite Coating Deposited by Spray Electrodeposition. Journal of Chinese Society for Corrosion and protection, 2020, 40(1): 57-62.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2019.223      或      https://www.jcscp.org/CN/Y2020/V40/I1/57

图1  喷射电沉积装置
图2  不同喷射电压复合镀层的表面形貌和不同喷射间隙复合镀层的表面形貌
Injection parameterSelf corrosive current density / A·cm-2Self corrosive potential / VCorrosion rate mm·a-1
22 V, 1.6 mm1.4244×10-5-0.462860.1724
25 V, 1.6 mm8.9251×10-6-0.610290.1082
28 V, 1.6 mm2.0838×10-5-0.422530.2522
25 V, 1.8 mm5.3521×10-6-0.533990.0648
25 V, 2.0 mm2.5664×10-6-0.510470.0311
表1  Ni-P-BN(h)-Al2O3镀层极化曲线分析结果
图3  喷射间隙为1.6 mm时不同喷射电压条件下复合镀层的Tafel曲线
图4  喷射电压为25 V时不同喷射间隙条件下复合镀层的Tafel曲线
图5  喷射间隙为1.6 mm时不同喷射电压的Nyquist曲线
图6  喷射电压为25 V时不同喷射间隙的Nyquist曲线
图7  Ni-P-BN(h)-Al2O3复合镀层在不同参数的相位角图
图8  电化学阻抗谱拟合用等效电路图
Injection parameterRsΩ·cm2CPE-TF·SP·cm-2CPE-PRpΩ·cm2
22 V, 1.6 mm6.5418.115×10-50.816283872
25 V, 1.6 mm4.4131.933×10-40.747255500
28 V, 1.6 mm6.6451.249×10-40.833305061
25 V, 1.8 mm5.1892.816×10-40.663375996
25 V, 2.0 mm9.4311.175×10-40.784296187
表2  电化学阻抗谱各元件等效电路拟合值
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