Servizio Comunitario di Informazione in materia di Ricerca e Sviluppo - CORDIS

Hydrogen diffusion data for different coatings

The IKE experimental set-up for investigations of hydrogen diffusion through metal walls at high temperatures and under moderate pressures enables reliable measurements of the hydrogen diffusion rate. Due to the construction of the set-up systematic measurement campaigns under different experimental conditions with different test-specimen can be carried out generating a large data-basis, which can be statistically analysed.

A special focus of the experiments is the influence of coatings, like plasma sprayed coatings on the hydrogen diffusion at high temperatures. Experimental results show that by means of thin wall coating ZrO2.Y2O3 the hydrogen diffusion is reduced compared to an untreated wall (reference material INCONEL 600). A further reduction of hydrogen diffusion is possible by means of oxidation.

Reported by

Institute of nuclear technology and Energy systems (IKE), University of Stuttgart
Pfaffenwaldring 31
70569 Stuttgart
See on map