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- Friction (6)
- Hydrogen (6)
- Tribology (4)
- Wear (4)
- PEEK (3)
- DLC (2)
- Festschmierstoffe (2)
- Hydrogen environment (2)
- Kompositwerkstoffe (2)
- Polymer composite (2)
Organisationseinheit der BAM
The effects of UV radiation and humidity condition on the frictional properties of TPU materials are presented in this paper.
Photooxidative degradation of polymer leads to deterioration of physical and mechanical properties, which affect its tribological behavior significantly.
Unfilled TPUs lose their anti-slip properties.
Safety and reliability are the major challenges to face for the development and acceptance of hydrogen technology. It is therefore crucial to study deeply material compatibility, in particular polymer materials that are directly in contact with hydrogen. This paper presents an experimental study on the fretting wear behavior of two types of cross-linked hydrogenated acrylonitrile butadiene rubbers against 316L steel ball in hydrogen environment. Furthermore, aging experiments were conducted for 7 days under static conditions in 100 MPa hydrogen. the influences of hydrogen pressure as well as the aging exposure on the fretting behavior are discussed by means of surface analyses along with the material properties.
Ensuring a sustainable energy supply is currently one of the most important areas for industry and research institutions. Hydrogen technology is a promising candidate, but its broad extension requires extremely high reliability and safety in all areas for common applications as automobiles and stationary fuel cells. Particularly components containing tribosystems are critical parts.
The tribological characteristics of pure and graphite filled polymers were investigated in gaseous hydrogen at ambient temperatures and in LH2 at -253°C. It could be shown that the tribological properties of PI and PEEK materials is related to the formation of a transfer film. The influence of both hydrogen and cryogenic temperatures will be discussed in the presentation.
Die Reibeigenschaften von PEEK-Materialien gegen Stahlscheiben wurden in Luft, Vakuum und Wasserstoffumgebung untersucht. Die Ergebnisse zeigen, dass reines PEEK umgebungsabhängig ist und die Desorption von Gasen im Vakuum zu hohen Verschleißraten führt. Die niedrigsten Verschleißraten sowohl in Vakuum als auch in einer Wasserstoffumgebung erzielen TiO2-Partikel. Ferner treten chemische Prozesse in den Materialien und im Tribokontakt auf und interagieren miteinander.
The development of hydrogen technologies is a key strategy to reduce greenhouse gas emission worldwide. Power-to-Gas is a challenging solution, in which hydrogen and methane can be used in mobility, industry, heat supply and electricity generation applications. This presentation deals with the tribological behaviour of polymer materials in hydrogen and methane, both in gas and in liquefied form.