Corrosion inhibitor screening for galvannealed steel and high-strength steel

Corrosion on the car underbody can affect critical parts, which poses safety risks. The current corrosion protection methods such as wax, sealers and coatings are not effective enough and an advance form of corrosion protection is desired. Implementation of smart coatings might be an effective solution. These coatings contain a self-healing...

Effect of Chemical Composition and Microstructure of Zn and Al-based Coatings on Electrochemical Response in Corrosive Environments

Hot formed steels are witnessing an increasing use in safety critical and structural parts for automobiles due to their high strength, light weight and absence of springback, due to which understanding the corrosion behaviour of coated products for hot forming is crucial to increase their stronghold in Body-In-White (BIW) applications for...

Investigation of the Inhibition Effect of Basic Oxygen Furnace Slag on the Corrosion of Galvanized Steel

Basic oxygen furnace (BOF) slag is a by-product of the steel conversion process in a basic oxygen furnace. A previous study at Tata Steel in Ijmuiden has discovered the inhibition effect of BOF-slag on the corrosion of cold rolled- and hot-dip galvanized steel. This inhibition effect and its mechanism was studied in this work and its was...

The influence of microstructure on the corrosion behaviour of ferritic-martensitic steel

Modern steel alloys are composed of several phases, for example ferrite and martensite. By varying the fraction or the size of the grains of these phases, the mechanical properties of the alloy can be altered. These microstructural variations were already found before to influence the corrosion properties of the alloy; this has been investigated...

Probability-based strength reassessment of corroded FPSOs using monitored loads

FPSOs are nowadays a common practice in the production of oil at sea. These ship-type offshore units, however, cannot have regular dry-docking as they have to be on field sometimes even for their entire lifetime. This is the reason why structural monitoring systems may play an important role in the safety of these units. The MONITAS JIP was...

Use of Modified Hydrotalcites (MHTs) as a New Type of Smart Additive of Reinforced Concrete for Improved Corrosion Protection: An Electrochemical Performance Assessment in Simulated Concrete Pore Solution

MHTs (MHT-p, MHT-N) represented superior corrosion inhibition effect against chloride induced pitting corrosion in simulated concrete pore solution when compared with the pure inhibitors (pAB, NaNO2). Among them, MHT-p exhibited a better improvement of inhibition effect than MHT-N. This result is probably caused by the bigger ion exchange...