Submit Manuscript  

Article Details


Comparative Testing of Corrosive Kinetics of Steel by Voltamperometry and Coulometry Methods

[ Vol. 8 , Issue. 2 ]

Author(s):

A.E. Kuzmak* and A.V. Kozheurov   Pages 100 - 104 ( 5 )

Abstract:


In this paper, a comparative study of the correctness of the results of registration of corrosion kinetics with the methods of current-voltage curves (V / a) and Coulometric Registration of Corrosion Products (CDCP method) was carried out. It is shown that the action of the electric field under polarization changes the character of the corrosion process and, in particular, stimulates the formation of the oxide layer, leading to a distortion of the results of the loss of the mass of the metal. The convergence of the results of coulometric and "tafel" measurements of mass loss is established only on "pure" metal. After the formation of the oxide layer, the "tafel" results show a protective effect, which does not exist in a real corrosion process.

Keywords:

Registration, kinetics, corrosion, methods, coulometry, voltammetry, comparison of results.

Affiliation:

AN Frumkin, Institute of Physical Chemistry and Electrochemistry, RAS, AN Frumkin, Institute of Physical Chemistry and Electrochemistry, RAS



Read Full-Text article