Effect of pearlite on stress corrosion cracking of carbon steel in fuel-grade ethanol
Research output: Contribution to journal › Article › Scientific › peer-review
- Aalto University
The selective dissolution of ferrite phase from the pearlite was studied in fuel-grade ethanol (FGE) to understand how it affects the stress corrosion cracking (SCC) mechanism of carbon steel in FGE. It was shown that microgalvanic coupling occurs between ferrite and cementite phases of the pearlite, leading to localized corrosion, which affects the SCC mechanism. The intergranular SCC mechanism stops at the pearlite, and the selective dissolution promotes the transgranular SCC mechanism. Cathodic polarization curves were measured for pure iron and cementite exposed to various FGE conditions. According to the results, cementite phase is, in most cases, a more favorable cathode in FGE.
|Early online date||9 Jan 2018|
|Publication status||Published - 27 Jun 2018|
|MoE publication type||A1 Journal article-refereed|
- carbon steel, fuel-grade ethanol, pearlite, selective dissolution, stress corrosion cracking