Corrosion and Corrosion Modelling

Student thesis: Profession bachelor

  • Ali Akdogan
4. term, Chemical Engineering and Biotechnology (Diploma Programme)
The purpose of this project is to give an overview on the subject “corrosion”, and it investigates models of corrosion.
Corrosion is an inevitable, natural process, but the use of metals in a wide range of industries entails significant economic consequences. Several factors have influence on the process of corrosion, and these can be the electrical conductivity of the electrolyte, oxygen content, pH, flow rate, temperature, stress, presence of microorganisms etc.
This project has focused on two models regarding CO_2 corrosion. The first one is the “De Waard model”, which incorporates temperature and CO_2 partial pressure. The other one is the “NORSOK standard M-506”, which also includes a third variable, which is the flow rate. The two models were tested using chosen values from two datasets through the use of two methods: Excel calculations and manual calculations.
During the process several aspects came into play including crucial variables which was needed in the calculations to ensure results which matches the actual values.

This includes steel type and alloy which has a direct link to the calculated values as these aspects changes the corrosion in the model calculations. From the data analysis it can be concluded that the De Waard model, and the NORSOK model is not accurate or close to the experimental data.

Publication date31 May 2021
Number of pages69
ID: 413354646