التفاصيل البيبلوغرافية
| العنوان: |
Mechanistic Model with Empirical Pitting Onset Approach for Detailed and Efficient Virtual Analysis of Atmospheric Bimetallic Corrosion |
| المؤلفون: |
Tommy G. Zavalis, Mats Ström, Dan Persson, Erik Wendel, Johan Ahlström, Karin Beaussant Törne, Claes Taxén, Bo Rendahl, Joakim Voltaire, Katarina Eriksson, Dominique Thierry, Johan Tidblad |
| المصدر: |
Materials; Volume 16; Issue 3; Pages: 923 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2023 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
bimetallic corrosion, galvanic corrosion, modeling, simulation, pitting, aluminum, AA 1050, lightweight, stainless steel |
| الوصف: |
A mechanistic model of atmospheric bimetallic corrosion with a simplified empirical approach to the onset of localized corrosion attacks is presented. The model was built for a typical bimetallic sample containing aluminum alloy 1050 and stainless steel 316L sheets. A strategy was developed that allowed the model to be calibrated against the measured galvanic current, geometrical corrosion attack properties, and corrosion products. The pitting-onset simplification sets all pits to be formed at a position near the nobler metal and treated all pits as being of the same shape and size. The position was based on the location of the highest pitting events and the pit attributes on an average of the deepest pits. For 5 h exposure at controlled RH (85%, 91%, and 97%) and salt load (86 μg NaCl/cm2), the model was shown to be promising: both for analysis of local bimetallic corrosion chemistry, such as pH and corrosion products, and for efficient assessment of pitting damage by computing a single largest pit depth. Parametric studies indicated that the pitting-onset approximation deviated the most at the beginning of exposure and when RH was below 91%. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Corrosion; https://dx.doi.org/10.3390/ma16030923 |
| DOI: |
10.3390/ma16030923 |
| الاتاحة: |
https://doi.org/10.3390/ma16030923 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.214C1D57 |
| قاعدة البيانات: |
BASE |