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A new superalloy composed of metals such as aluminum and nickel has been developed by an engineering team at the University of Alberta with the goal of targeting
Known as a ‘complex concentrated alloy,’ the new material is ideal for coating surfaces such as those in gas turbines, power stations, vehicles and airplane engines., 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.
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 asrun on a mix of fuels — natural gas and hydrogen, or diesel and hydrogen, for instance — but as more industries work to adopt hydrogen as a primary fuel source, Liu sees a need to prepare for the ultra-high temperature conditions of a fully hydrogen-fuelled engine.
“We did our experiment on these corrosive environments for up to 100 hours at 900 degrees Celsius and it survived, so that’s a big improvement,” Zhang said.offers promise to withstand the heat of a high-percentage hydrogen combustion engine, further studies are necessary before it can be widely adopted.
“This alloy outperforms anything else on the market right now,” Liu said. “It opens the door for new possibilities and will hopefully advance the Canadian hydrogen economy.”The two aim to produce the key commodity used in lithium-ion batteries and processing it without needing water, chemicals or reagents.Spot prices for copper and aluminum in London have moved to sharply deeper discounts to the three-month contract this week.
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