Electrochemical measurements for marine atmospheric corrosion studies using Kelvin probe reference electrode

1996 ◽  
Vol 14 (3) ◽  
pp. 266-271
Author(s):  
Wang Jia
Keyword(s):  
Atmospheric Corrosion ◽  
Reference Electrode ◽  
Electrochemical Measurements ◽  
Kelvin Probe ◽  
Corrosion Studies

An Automatic Polarization Apparatus for Electrochemical Corrosion Studies

CORROSION ◽  
1969 ◽  
Vol 25 (12) ◽  
pp. 515-519 ◽  
Author(s):  
W. D. HENRY ◽  
B. E. WILDE
Keyword(s):  
Cathodic Polarization ◽  
Reference Electrode ◽  
Electrochemical Corrosion ◽  
304 Stainless Steel ◽  
Constant Current ◽  
Voltage Source ◽  
Potential Range ◽  
Alloy Development ◽  
Corrosion Studies ◽  
Potentiodynamic Anodic Polarization

Abstract Statistical alloy development programs in which electrochemical screening techniques are used require facilities to produce precision polarization data. Conventional equipment and techniques presently available for such programs are not entirely satisfactory. Therefore, modifications were made to readily available commercial equipment to significantly improve the attainable sensitivity and reproducibility. This paper describes in detail the procedures necessary to produce an apparatus that automatically measures and records anodic and cathodic polarization curves over an applied potential range of ±2.0 volts. Traverse rates between 2 × 10−3 and 3 × 104 volts per hour are attainable and can be used to polarize electrodes through zero volts (with respect to reference electrode) without the necessity of manual switching. A special mode switch is described in detail with which the basic electronic potentiostat can be used as a constant current or constant voltage source by manual selection. The results obtained from three typical polarization experiments: (1) potentiodynamic anodic polarization, (2) galvanodynamic cathodic polarization, and (3) galvanodynamic linear polarization of AISI Type 304 stainless steel in hydrogen saturated 1N H2SO4 at 25 C (77 F), showed the performance of the apparatus to be equal to or superior to that of conventional manual procedures.

Measuring Aerosol Chlorides for Atmospheric Corrosion Studies in Cold Alaskan Climate

2021 ◽  
Vol MA2021-02 (10) ◽  
pp. 593-593
Author(s):  
Raghu Srinivasan ◽  
Tyler Cushman
Keyword(s):  
Atmospheric Corrosion ◽  
Corrosion Studies

Reproducbility of Electrochemical Measurements of Atmospheric Corrosion Phenomena

2009 ◽  
pp. 309-309-30 ◽  
Author(s):  
F Mansfeld ◽  
S Tsai ◽  
S Jeanjaquet ◽  
E Meyer ◽  
K Fertig ◽  
...  
Keyword(s):  
Atmospheric Corrosion ◽  
Electrochemical Measurements

scholarly journals The role of chromium content in the long-term atmospheric corrosion process

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Baozhuang Sun ◽  
Xiaomei Zuo ◽  
Xuequn Cheng ◽  
Xiaogang Li
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Atmospheric Corrosion ◽  
X Ray Diffraction ◽  
Kelvin Probe ◽  
Electrochemical Tests ◽  
Force Microscopy ◽  
Cr Content ◽  
Alloy Steels ◽  
Bare Steel

AbstractThe corrosion of alloy steels with different amounts of Cr was studied using electrochemical tests, wet–dry cycle corrosion, X-ray diffraction, and Kelvin probe force microscopy. The results show that the content of Cr is positively correlated with the corrosion resistance of bare steel, but the corrosion resistance of atmospheric corrosion does not show the same pattern. The atmospheric corrosion resistance of Cr-containing steel exhibits three different stages with the change of Cr element content. When the Cr content is in the range of 1–4%, the corrosion rate is high and does not change within the Cr content. As the Cr content was further increased from 4 to 7%, the corrosion rate exhibited a linear decrease and then drops rapidly when the Cr content reaches 8%. These three different corrosion rate stages are related to the influence of Cr content on Fe3O4 content in the rust layer.

An Assembly for Electrochemical Corrosion Studies in Aqueous Environments at High Temperature and Pressure

CORROSION ◽  
1967 ◽  
Vol 23 (11) ◽  
pp. 331-334 ◽  
Author(s):  
B. E. WILDE
Keyword(s):  
Test Specimen ◽  
Reference Electrode ◽  
Electrochemical Corrosion ◽  
High Temperature And Pressure ◽  
Aisi Type ◽  
Corrosion Studies ◽  
External Reference ◽  
Aqueous Environments ◽  
Temperature And Pressure ◽  
Type 304

Abstract An assembly is described, in which electrochemical corrosion measurements can be carried out in aqueous environments up to 314 C (598 F) and 105.5 kg/cm2. Test specimen mounting and corrosive environment containment procedures are discussed. A techniqie for using a high pressure electrolyte bridge with an external reference electrode is described. The performance of the system is demonstrated by potentiostatic anodic, cathodic and linear polarization experiments carried out on AISI Type 304 steel in dilute chloride solutions at 289 C.

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