How the pure Sc will be used in alloy materials?

　　Pure Sc is mainly used as additive and modifier in alloy materials.The comprehensive properties of the alloy can be improved by adding Sc into aluminum and aluminum alloy.For example, the strength, hardness, heat resistance, corrosion resistance and weldability of the alloy are obviously improved.For example, if adding Sc≤ 0.4% in Al, new phase Al3Sc can be formed to refine alloy structure, improve recrystallization temperature 150 ~ 200℃, and improve the comprehensive properties of strength, hardness and heat resistance of the alloy.If sc0.75% is added to al-MG-ZR to make al-SC-MG-ZR alloy, the actual performance is better.If Sc0.3 ~ 1.0% is added to A1-Li-Mg-ZR, the alloy performance is better.The above A1-Sc alloy can also prevent embrittlement when working at high temperature for a long time.Therefore, it can be used as excellent structural materials and has been used in aerospace, aviation, missile, automobile and ship structural components, etc. This is the great potential of a1-SC new alloy.
　　
　　In addition, after adding Sc, the tensile strength, flow limit and elongation of AI-MG (2-8.1) -SC (o. 4%) alloy after aging treatment were increased by 20.35%, 60.80% and 20.25% respectively.For example, after adding Sc1l % to alloy MgY(11%).Mn (0.6%), the flow limit is 60 ~ 80Pa after aging treatment at 300℃.For example, after adding Sc in GaSc, an excellent cermet binder and advanced coating material can be made.For example, after adding Sc in TnC, its hardness increases to nearly the hardness of diamond.If ScB2 is produced by adding Sc to boron, it can be used as light temperature resistant alloy and cathode part for electron gun.