Yan Ma

This PhD position at Delft University of Technology (TU Delft) offers the opportunity to contribute to the decarbonization of the steel industry by developing hydrogen-based processes for ironmaking. The project is part of the 'Growth with Green Steel' national research consortium, which unites leading Dutch universities, research institutes, and industry partners to accelerate the transition to fossil-free iron and steel production. Steel production is a major source of global CO2 emissions, with the majority of emissions arising from the reduction of iron ore using carbon-based reductants. Hydrogen-based direct reduction (HyDR) is a promising alternative that can eliminate direct CO2 emissions during iron ore reduction. As a PhD researcher, you will investigate the effects of gangue elements on the reduction behavior of iron ore pellets, analyze local elemental partitioning and microstructural evolution, study carburization behavior and its impact on melting performance, and apply multiscale characterization strategies to link microscopic phenomena to macroscopic process outcomes. The research aims to optimize the HyDR process and pellet design, contributing to the steel industry's decarbonization. You will join the Sustainable Metallurgy Laboratory in the Department of Materials Science and Engineering, working in a collaborative, international environment with state-of-the-art facilities for process metallurgy and microstructure characterization. The lab emphasizes open interaction, knowledge sharing, and teamwork, supporting both individual and collective scientific growth. You will also have opportunities to co-supervise students and participate in academic discussions and guest lectures. The position is fully funded for four years, with a competitive salary and benefits according to the Dutch Collective Labour Agreement for Universities. Applicants should have an MSc in materials science, physics, or chemical engineering, with relevant background and laboratory experience. The application deadline is 30 November 2025, and the expected start date is March 2026. Applications must be submitted online and include a motivation letter, CV, academic transcripts, and references. English proficiency is required, and the selection process includes a knowledge security risk assessment. TU Delft offers support for international relocation and a vibrant, diverse academic community.