(Bloomberg, London) European scientists may have discovered a method that can make magnets for wind turbines and electric vehicles without using rare earth metals.
British and Austrian researchers found a method for making Tetrataenite.If the production process is commercially active, Western countries will greatly reduce their dependence on China's rare earth metal.
Sifang nickel -grained stone is a alloy of iron and nickel. It has a specific atomic structure and is common in iron meteorite. It can be formed naturally after millions of years in the universe.
In the 1960s, scientists collided with iron nickel alloys with neutrons, so that the atoms were arranged according to a specific structure to artificially synthesize Sifang nickel -grained stone, but this technology is not suitable for large -scale production.
Researchers at the University of Cambridge, the Academy of Austrian Academy of Sciences and Laoben University of Mining and Technology now discovered that it has added common element phosphorus to an appropriate amount of iron and nickel, and pour alloys into molds.
Researchers hope to cooperate with major magnet manufacturers to determine whether tidy nickel -grained stone is suitable as high -performance magnets.
High -performance magnets are the key parts of the generator and motor. At present, the manufacturing high -performance magnets must be added with rare earth metals.Rare earth metals are not scarce in the crust, but the refining process is difficult, and a large amount of energy must be consumed and destroyed the environment.
The professor of Materials Science and Metallurgical, the Department of Materials Science and Metallurgical, led by leadership, said: "There are also rare earth mines in other places, but mining activities are highly destructive: a large amount of ore must be used to extract a small amount of rare earth metals from it.Between influence and high dependence on China, you must find alternative materials that do not use rare earth metals. "
At present, more than 80 % of global rare earth metals are produced in China.The US President Biden has stated that it supports the production of key materials, and the EU recommends that member states realize the diversification of supply chains to avoid excessive relying on single markets such as China, including rare earth metals.