Rare earths can change the existence of impurities in non-ferrous metals through chemical reactions. There are often metallic or non-metallic impurities in non-ferrous metals. Metal rare earth elements can react with these impurity metals, such as Liu Ru and iron, silicon, etc. forming different compounds, so It can change the inherent solid solution mode of aluminum metal, resulting in a continuous decrease in its resistivity.

Another example is that rare earth elements and non-metallic elements form high-melting compounds due to chemical reactions, which leads to the refinement of the grain network structure of non-ferrous metals, effectively stabilizing the grain boundaries, and forming high-melting intermetallic compounds, which improve the non-ferrous metals. Comprehensive properties of metals.

The addition of rare earth elements can reduce the content of hydrogen in non-ferrous metals. Because hydrogen, especially hydrogen incorporated into liquid metals, will exist in the form of atoms and then become macromolecules, which will cause problems such as cracks in non-ferrous metal materials and seriously reduce the overall performance. , and damage its processing, so reducing the hydrogen content of non-ferrous metals has attracted more and more attention of scientists.

Because of this, adding an appropriate amount of rare earth elements can effectively reduce the hydrogen content. For example, studies have shown that 0.190-0.3% 6 rare earth can significantly reduce the hydrogen content in aluminum and its alloys, and achieve a very good hydrogen reduction effect. Elements can change the surface tension of alloys.

As long as the surface tension of the substrate is reduced, the formability and castability of the metal or alloy can be effectively improved. The formability and castability of the metal are one of the effective standards for the performance of the metal and its alloys. Adding an appropriate amount of rare earth to aluminum and aluminum alloys can effectively reduce the surface tension.