1, Zr-based modifier: Zr-based modifier is the main type of Zr alloy modifier, including Zr-Sn alloy and Zr-Bi alloy. These modifiers can change the grain shape, size and distribution of the alloy, thus improving the mechanical properties and corrosion resistance of the alloy.
2. alkali metal salt modifiers: alkali metal salt modifiers, such as NaF and LiF, can change the physical properties of the alloy, such as lattice constant, conductivity and permeability.
3. Composite modifier: Composite modifier is a composite material containing both zirconium-based and alkali metal salt modifiers, which can give full play to the advantages of the two modifiers and better improve the properties of the alloy.