Study of Corrosion Resistance of Electro-Deposition Ni-Cbn Composite Coatings

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Gao, Xin^1 ; Xiang, Lijun^1 ; Wu, Chenhui^1 ; Guo, Jian^1 ; Lei, Yahong^1

Wuhan Second Ship Design and Research Institute, Wuhan

430064, China^1

关键词: Corrosion studies;    Cubic boron nitride (cBN);    Energy dispersive spectrometers;    NaCl solution;    Polarization curves;    Protection performance;    Reverse effects;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/4/042075/pdf
DOI  :  10.1088/1755-1315/170/4/042075

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, Ni-cubic boron nitride (cBN) composite coating with different volume fractions (from 2.45% to 45.66 vol.%) of cBN particle was successfully prepared by electro-deposition method on steels. The polarization curves (Tafel), electrochemical impedance spectroscopy(EIS), X-ray diffraction (XRD), energy dispersive spectrometer (EDS) and scanning electron microscopy (SEM) were used to characterize the protection performance of coatings. The potentiodynamic polarization and electrochemical impedance spectroscopy of Ni-cBN coatings in 3.5wt% NaCl solution were performed to investigate the effects of cBN particles friction on composite coatings. The results of corrosion studies revealed that while addition of 45.66% of cBN particles resulted in potent protection performance of composite coatings, a low amount of cBN particles content exhibited a reverse effect.