Hydrogen impacts on automotive applications

Hydrogen creates challenging environments

One of the challenges in developing a coating for hydrogen applications is that hydrogen is a dry gas. In contrast to natural compressive gas (CNG), it does not contain any lubricating compression oil. This means that your chosen coating needs to have a self-lubricating effect in hydrogen gas. In addition, hydrogen can diffuse into the surface of components exposed to it, leading to hydrogen embrittlement which may cause components to fail prematurely.

In addition to these hydrogen-related challenges, our project had more: because we developed coatings for fuel injectors, that means they also had to withstand high hydrogen gas pressures and high temperatures.

Hydrogen automotive coatings

Preview of tests and results

The Ionbond development process is of course very complex. Going through this process, the focus was on low-friction (<0.05 coefficient of friction) and low wear rate in a hydrogen atmosphere. We evaluated four potential coating types on these qualities.

We also investigated the barrier properties of the coatings, to avoid hydrogen diffusion and prevent embrittlement. Even if the coatings are only a few micrometers thick, they can work as a barrier to reduce the diffusion significantly. This means the coating will help the component – and thereby the engine – be that much more robust.

Ionbond Allianz Wasserstoff Motor

Download the whitepaper now

Would you like to see our development process in action and read more about the winning coatings? Download the whitepaper today.

Are you enthusiastic about this topic and this application? Or would you like to run some tests of your own? Then let’s meet up at the Hydrogen Combustion Engine Alliance trade show! We’ll be there from 10-11 September 2024, and we’d love to talk in more depth. Make sure to get in touch beforehand, so we can schedule time together at the show.

Livre blanc

Revêtements pour les applications tribologiques de l'hydrogène

Nos revêtements tribologiques sont la solution idéale pour accroître la longévité et l'efficacité de vos composants d'injection, vannes et compresseurs. Téléchargez notre livre blanc pour en savoir plus!

7 pages | 11 minutes bien utilisées

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