Corrosion and protective coatings
Corrosion is the gradual degradation of a metal by reaction with its environment, and protective coatings are the most common defence. Abdul Rahman works on corrosion kinetics, interpretation of electrochemical test data and machine learning-guided design of self-healing epoxy coatings, the subject of his paper on MgO-loaded ZIF-8 nanocontainers.
What's included
- Identification of corrosion mechanisms: galvanic, pitting, crevice, stress corrosion cracking, hydrogen embrittlement
- Interpretation of electrochemical tests such as polarization and EIS
- Coating failure investigation with SEM/EDS
- Coating formulation screening with machine learning and Bayesian optimization
- Material and coating selection for harsh and marine environments
Who it's for
- Coating manufacturers developing new formulations
- Plant and asset owners with recurring corrosion
- Marine, oil and gas, and infrastructure teams
- Product teams choosing metals for a new environment
How it works
- Discovery call: A free 30-minute video call to understand the part, the material and what you need to decide.
- Proposal: A short written scope with the analyses, the data or samples needed, the timeline and the price.
- Analysis: Data and images are shared securely online; physical testing is arranged with a lab near you when needed.
- Report and debrief: A written report with findings and recommendations, followed by a call to walk your team through it.
Questions about corrosion & coatings
What is galvanic corrosion?
Galvanic corrosion happens when two different metals are in electrical contact in an electrolyte such as seawater. The less noble metal corrodes faster than it would alone, while the more noble metal is protected. It is prevented by choosing compatible metals, insulating the joint or coating the parts.
What is stress corrosion cracking?
Stress corrosion cracking is cracking caused by the combined action of tensile stress and a corrosive environment, often at stresses well below the material's yield strength. Examples include chloride cracking of austenitic stainless steels.
What is a self-healing coating?
A self-healing coating contains agents, often held in microcapsules or nanocontainers, that are released when the coating is damaged and repair the defect or inhibit corrosion at the exposed metal, extending the coating's protective life.