US 11,953,422 B2
Method and apparatus for detecting corrosion
Mikael Bergelin, Åbo (FI); Janne Lahtiranta, Lieto (FI); Juho Lehmusto, Åbo (FI); and Berndt Södergård, Åbo (FI)
Assigned to ÅBO AKADEMI UNIVERSITY, Turku (FI)
Appl. No. 17/779,822
Filed by ÅBO AKADEMI UNIVERSITY, Turku (FI)
PCT Filed Nov. 25, 2020, PCT No. PCT/FI2020/050796
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2021/105563, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 20196024 (FI), filed on Nov. 27, 2019.
Prior Publication US 2023/0011245 A1, Jan. 12, 2023
Int. Cl. G01N 17/02 (2006.01); G01N 17/00 (2006.01)
CPC G01N 17/02 (2013.01) [G01N 17/006 (2013.01); G06F 2218/12 (2023.01)] 13 Claims
OG exemplary drawing
 
1. A method of detecting corrosion on surfaces of an object, the method comprising
immersing the object into an electrolyte,
detecting by electrochemical techniques the presence of corrosion on the surfaces of the object based on current originating from redox reaction of iron, wherein the step of detecting comprises using linear sweep voltammetry (LSV) or cyclic voltammetry (CV) scan and using an Ag or an AgCl reference electrode in the LSV or CV scan as the third electrode, and wherein the potential window for the LCV or CV scan is between −0.35V and 0.35V vs Ag/AgCl reference.