H2FREE

H2FREE: Investigation and modelling of Hydrogen effusion in electrochemically plated ultra-high-strength-steels used for landing gear structures

- Start: 01/01/2021
- End: 30/04/2023
- Budget: 999.897,50€

Partners:

- Fundación CIDETEC (Coordinator)
- HELMHOLTZ-ZENTRUM GEESTHACHT ZENTRUM FUR MATERIAL- UND KUSTENFORSCHUNGGMBH
- ELSYCA NV
- FUNDACION AZTERLAN
- ELECTROLESS HARD COAT SA
- MAX PLANCK INSTITUT FUR EISENFORSCHUNG GMBH

Website:

https://cordis.europa.eu/project/id/101007712

The project:

H2Free is a Clean Sky 2 Joint Undertaking project focusing on the Investigation and modelling of Hydrogen effusion in electrochemically plated ultra-high-strength-steels used for landing gear structures.

UOne drawback associated to Ultra High Strength Steels (UHSS) coated components is the risk of hydrogen embrittlement (HE) and delayed hydrogen fracture of the part. The standard degassing process is applied equally to the components regardless UHSS or coating composition/morphology. However, it is known that the nature and structure of both the base material and the coating have a great influence in the hydrogen intake and degassing efficiency. The main objective of the H2Free project is to develop a practical guideline for hydrogen degassing of UHS-steels plated with LHE-Zn-Ni, with the aim of saving production costs and allowing Zn-Ni to overtake Cd coatings.

The guideline will contain simple rules/formulas to provide criteria to design the degassing process, based on experimental data and on modelling to predict the hydrogen effusion in coated UHSS, the remaining hydrogen concentration in the components and so the probability of hydrogen embrittlement. With its digital approach, H2Free will accelerate materials modelling uptake into European industrial decision making and link all partners to central European materials modelling platforms and activities. The project brings together a strong consortium composed of 4 outstanding research centres and 2 SMEs with complementary profiles and large expertise.

CIDETEC'S role in the project:

CIDETEC Surface Engineering is the coordinator of the project and leader of two WPs. CIDETEC will electrodeposit both LHE-Zn and LHE-Cd on different UHSSs, both in lab ad pilot plant scales, under different conditions in order to produce and characterize a broad spectrum of morphologies with different H contents and will support the other partners of the project with coated specimens to be characterized regarding H permeability and hydrogen embrittlement.

Financer:

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