Quantitative calibration of the relationship between Volta potential measured by scanning Kelvin probe force microscope (SKPFM) and hydrogen concentration

2021 ◽  
Vol 366 ◽  
pp. 137422
Author(s):  
Zhaoxiang Ma ◽  
Xilin Xiong ◽  
Lin Chen ◽  
Yanjing Su
Keyword(s):  
Hydrogen Concentration ◽  
Kelvin Probe ◽  
Scanning Kelvin Probe ◽  
Volta Potential ◽  
The Relationship

Scanning Kelvin Probe Investigation of Corrosion Under Thick Marine Paint Systems Applied on Carbon Steel

CORROSION ◽  
10.5006/0551 ◽  
2012 ◽  
Vol 68 (8) ◽  
pp. 720-729 ◽  
Author(s):  
A. Nazarov ◽  
N. Le Bozec ◽  
D. Thierry ◽  
P. Le Calvé ◽  
J.-P. Pautasso
Keyword(s):  
High Efficiency ◽  
Steel Substrate ◽  
Localized Corrosion ◽  
Kelvin Probe ◽  
Surface Distribution ◽  
Accelerated Corrosion ◽  
Paint Systems ◽  
Scanning Kelvin Probe ◽  
Corrosion Evaluation ◽  
Volta Potential

The scanning Kelvin probe (SKP) is a non-destructive technique for measuring the surface distribution of the Volta potential with a high spatial resolution of a few tens of micrometers. The SKP technique allows in situ studies of the localized corrosion processes under atmospheric weathering conditions, on metal surfaces, or underneath organic coatings. In the present study, the SKP technique was used to follow the kinetics of underpaint corrosion from a defect applied on steel coated with thick marine paint systems (0.4 mm to 0.5 mm) as a function of exposure time in an accelerated corrosion test. Three different paint systems were investigated. In addition, the influence of surface cleanliness in terms of salt concentration on a steel substrate prior to paint application was investigated using the SKP technique. The results showed the high efficiency of the SKP technique for early corrosion evaluation under thick paints on steel substrate.

Volta Potential of Oxidized Aluminum Studied by Scanning Kelvin Probe Force Microscopy

2010 ◽  
Vol 114 (18) ◽  
pp. 8474-8484 ◽  
Author(s):  
Kiryl A. Yasakau ◽  
Andrei N. Salak ◽  
Mikhail L. Zheludkevich ◽  
Mário G. S. Ferreira
Keyword(s):  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Scanning Kelvin Probe ◽  
Volta Potential

scholarly journals Zn-Co-CeO2 vs. Zn-Co Coatings: Effect of CeO2 Sol in the Enhancement of the Corrosion Performance of Electrodeposited Composite Coatings

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 704
Author(s):  
Marija Riđošić ◽  
Nebojša D. Nikolić ◽  
Asier Salicio-Paz ◽  
Eva García-Lecina ◽  
Ljiljana S. Živković ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Healing Rate ◽  
Electrochemical Impedance ◽  
Composite Coatings ◽  
Self Healing ◽  
Kelvin Probe ◽  
Artificial Defect ◽  
Volta Potential ◽  
Superior Corrosion Resistance ◽  
The Stability

Electrodeposition and characterization of novel ceria-doped Zn-Co composite coatings was the main goal of this research. Electrodeposited composite coatings were compared to pure Zn-Co coatings obtained under the same conditions. The effect of two ceria sources, powder and home-made sol, on the morphology and corrosion resistance of the composite coatings was determined. During the electrodeposition process the plating solution was successfully agitated in an ultrasound bath. The source of the particles was found to influence the stability and dispersity of plating solutions. The application of ceria sol resulted in an increase of the ceria content in the resulting coating and favored the refinement from cauliflower-like morphology (Zn-Co) to uniform and compact coral-like structure (Zn-Co-CeO2 sol). The corrosion resistance of the composite coatings was enhanced compared to bare Zn-Co as evidenced by electrochemical impedance spectroscopy and scanning Kelvin probe results. Zn-Co doped with ceria particles originating from ceria sol exhibited superior corrosion resistance compared to Zn-Co-CeO2 (powder) coatings. The self-healing rate of artificial defect was calculated based on measured Volta potential difference for which Zn-Co-CeO2 (sol) coatings exhibited a self-healing rate of 73.28% in a chloride-rich environment.

Scanning Kelvin probe measurements on As-doped CdTe solar cells

2013 ◽  
Vol 28 (10) ◽  
pp. 105024 ◽  
Author(s):  
W S M Brooks ◽  
S J C Irvine ◽  
D M Taylor
Keyword(s):  
Solar Cells ◽  
Kelvin Probe ◽  
Cdte Solar Cells ◽  
Scanning Kelvin Probe ◽  
Probe Measurements
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