In a paper published in the journal Materials Today, the researchers note that the alloy — AlCrTiVNi5 — has superior thermomechanical properties that include high stability, low expansion, fracture tolerance, and a valuable combination of strength and ductility — which make it able to stand up in high-heat and high-pressure environments. Thus, it could prove important for use in hydrogen engines.
“If you would like to use a 100% hydrogen fuel combustion engine, the flame temperature is extremely high,” Jing Liu, senior author of the study, said in a media statement. “Until now, none of the existing metallic coatings have been able to work in a 100% hydrogen combustion engine.”
Hydrogen burns at temperatures ranging from 600 to 1500 degrees Celsius. This means that any mechanical components involved in hydrogen combustion must be able to withstand high heat as well as resist corrosion from steam.
Currently, most…
