| KEYWORD |
Area Engineering
Hydrogen compatibility of materials for engine applications
Reference persons PAOLO MATTEIS
Description Recent developments in the field of electricity production with intermittent renewable sources and in public policies to reduce carbon dioxide emissions have led to a renewed interest in the use of hydrogen as an energy intermediate, in particular for applications in heavy and long-haul vehicles (heavy road vehicles, construction machinery, trains, ships) and/or electricity generation at construction sites or isolated locations. In this area, therefore, there is interest in the development of hydrogen-powered endothermic engines.
This also requires verification of the compatibility with hydrogen of the metallic materials used in engines, in particular with respect to the risks inherent in hydrogen embrittlement phenomena, both of an environmental nature, i.e. determined by surface exposure to hydrogen during mechanical stress, and of the internal type, i.e. determined by the possible progressive absorption of hydrogen inside the metal during the use of the engine.
In the course of the thesis work, therefore, the compatibility with hydrogen of some materials (cast iron, foundry aluminum alloys, high temperature alloys) commonly used in endothermic engines will be examined. For this purpose, it will be possible to carry out both comparative laboratory tests, on samples extracted from components previously used in hydrogen engines, and mechanical tests under conditions of exposure to hydrogen (carried out electrochemically).
Deadline 30/09/2024
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