LUTETIUM CAS 7439-94-3

Rare earth metals and their alloys play a role in deoxygenation and desulfurization in steelmaking, which can reduce the content of the two to less than 0.001%, and change the form of inclusions, refine the grains, thereby improving the processing performance of steel, improving strength, toughness, corrosion resistance and oxidation resistance. Rare earth metals and their alloys are used in the manufacture of ductile iron, high-strength gray cast iron and vermicular ink cast iron, which can change the form of graphite in cast iron, improve the casting process, and improve the mechanical properties of cast iron. Adding small amounts of rare earth metals to bronze and brass smelting can improve the strength, elongation, heat resistance and electrical conductivity of the alloy. Adding 1% to 1.5% rare earth metals to cast aluminum-silicon alloys can improve the strength at high temperatures. Adding rare earth metals to aluminum alloy wires can improve tensile strength and corrosion resistance. The addition of 0.3% rare earth metal to Fe-Cr-Al electric alloy can improve oxidation resistance, increase resistivity and high temperature strength. Adding rare earth metals to titanium and its alloys can refine grains, reduce creep rates, and improve high-temperature corrosion resistance. Microsphere molecular sieves prepared with cerium mixed rare earth chlorides and lanthanum-rich rare earth chlorides for petroleum catalytic cracking processes. Rare earth metal and transition metal composite oxide catalysts are used for oxidation purification to convert carbon monoxide and hydrocarbons into carbon dioxide and water. Catalysts for neodymium-alkyl aluminum-aluminium chloride ternary system for synthetic rubber [4].