In-situ measurements of corrosion by neutron reflectivity
|Coordinator||CHALMERS TEKNISKA HÖGSKOLA AKTIEBOLAG - Chalmers tekniska högskola AB, Göteborg|
|Funding from Vinnova||SEK 500 000|
|Project duration||November 2018 - November 2019|
|Venture||Research infrastructure - utilisation and collaboration|
|Call||Research infrastructure - utilisation and collaboration: Industrial pilot projects for neutron and photon experiments at large scale research infrastructures|
Purpose and goal
In this project neutron reflectivity will be used to study how the presence of hydrogen affects the spontaneous growth of a protective surface oxide layers on a FeCr alloy, a material used as interconnects in solid oxide fuel cells (SOFC). The project is a collaboration between Sandvik Materials Technology (SMT) and Chalmers. SMT produces metal coated steel products for the SOFC industry and an understanding of the detrimental effects of hydrogen are critical for future product development.
Expected results and effects
The unique properties of the neutrons cause very small levels of hydrogen to be observed inside a material, which means that neutron reflexivity can be a promising technique for studying the hydrogen´s impact on high temperature corrosion processes. The project aims in part to broaden the scope of neutron reflexivity and to learn more about the challenges and opportunities it involves investigating corrosion processes on metal alloys at high temperatures.
Planned approach and implementation
To enable the study of the dual atmosphere effect on a neutron beamline, a specialized sample cell will be developed, which will ensure one side of the sample is exposed to oxygen gas and the other to hydrogen gas. The experiments will be performed at the Swedish neutron reflectometer Super-Adam at the Institut Laue-Langevin (ILL) in Grenoble, France.