Investigation and modelling of ash deposit induced dynamic alloy corrosion in thermal and chemical gradients

Waste-to-energy and biomass power plants are an essential part for meeting climate goals and reaching circular economy. However, their efficiency is severely reduced due to high-temperature corrosion. This corrosion is mainly caused by the ash from the fuel and enhanced by extreme thermal and chemical gradients inside the boilers. This project, primarily carried out at Åbo Akademi University, is investigating the complex, dynamic mechanisms that lead to material failure. We use innovative, custom-built laboratory setups to generate new experimental data that simulates these harsh conditions. This data will be used to develop an advanced multiscale computational model to predict when and how materials will fail. The results will allow industries to select better, more reliable materials and optimize boiler operations, directly increasing the efficiency, safety, and reliability of sustainable energy production.