simulated seawater
Recently Published Documents


TOTAL DOCUMENTS

184
(FIVE YEARS 76)

H-INDEX

22
(FIVE YEARS 8)

2022 ◽  
Vol 23 ◽  
pp. 100705
Author(s):  
Xudong Chen ◽  
Wenting Li ◽  
Guangxun Zhang ◽  
Fancheng Sun ◽  
Qingling Jing ◽  
...  
Keyword(s):  

2022 ◽  
Vol 8 ◽  
Author(s):  
Gang Ma ◽  
Hui Gao ◽  
Chong Sun ◽  
Yanhong Gu ◽  
Jie Zhao ◽  
...  

To detect the corrosion resistance of a friction stud welding (FSW) joint in simulated seawater (a 3.5 wt% NaCl solution), the pulse electrochemical deposition method was used for electroplating Ni coating with different duty ratios (50%, 80%, and 100%) on the surface of FSW joint. The microstructure and surface structure of the coating were observed by micro-spectroscopy and other characterization methods. The corrosion behavior of the coating was analyzed by means of macroscopic electrochemical testing. The local corrosion law of joint surface and coating surface defects were innovatively explored by using micro-zone electrochemical scanning system. The coating characterization results showed that, as the duty ratio continues to increase, the coating surface becomes denser and smoother, and the corrosion products such as Fe2O3, Fe3O4, and FeOOH are generated. The results of macroscopic electrochemical experiment indicated that the coating with 100% duty ratio has the lowest corrosion current density and the maximum polarization resistance. The scanning vibrating electrode technique results showed that the corrosion current density in the defect area is higher than that in the coating area, and the maximum corrosion current density decreases with the increase of duty ratio. The localized electrochemical impedance spectroscopy results indicated that the localized impedance at the welded zone was the largest, and with the increase of the pulse duty ratio, the impedance diffusion in the defect area was decreasing.


Author(s):  
Katipot Inkong ◽  
Viphada Yodpetch ◽  
Hari Prakash Veluswamy ◽  
Santi Kulprathipanja ◽  
Pramoch Rangsunvigit ◽  
...  

Author(s):  
Yong-kuan Zhou ◽  
Jia-jie Kang ◽  
Wen Yue ◽  
Zhi-qiang Fu ◽  
Li-na Zhu ◽  
...  

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6764
Author(s):  
Yingxiao Zhang ◽  
Tingting Yan ◽  
Lin Fan ◽  
Zhiyong Liu ◽  
Longfei Song ◽  
...  

The effect of pH on the corrosion and repassivation behavior of TA2 in simulated seawater was studied using electrochemical tests, immersion experiments, and surface morphology topology analysis. The results show that Ecorr and Rf increased while ipass and weight loss rate decreased as the pH of simulated seawater increased. The TA2 passive film was determined to be mainly composed of a large amount of TiO2 and a small amount of TiO. The repassivation function of TA2 can be expressed as E = −0.1375 + 0.0532ln(t − 1.241) for a simulated seawater pH of 8.2. The parameter b, which represents the slope of the potential–time curve during the friction electrode test, was used to evaluate the repassivation behavior of TA2. The increase in pH value was observed to promote the repassivation speed of the passive film, which is beneficial to the corrosion resistance of TA2.


2021 ◽  
pp. 117892
Author(s):  
Shu-Qing Qiu ◽  
Guo-Yong Huang ◽  
Gui-Zhen Fang ◽  
Xiao-Pei Li ◽  
Dong-Qiao Lei ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document