Tungsten,
molybdenum,
tantalum,
niobium metals are important new materials used in the high-tech industry at home and abroad. Its characteristics: high temperature resistance, thermal conductivity, high strength and toughness at high temperature, heat insulation, tensile wear resistance, used in aerospace, military, photoelectric, solar energy, vacuum heat treatment, electric heating, electronic crystal and other high-tech industries.
With the development and continuation of science and technology, single tungsten, molybdenum, tantalum, niobium metal products can no longer meet the requirements of material quality and energy application, rare metals are developing towards alloying, forming new metal alloy materials. Tungsten, molybdenum, tantalum, niobium alloy is a new alloy material formed by combining and adding trace elements after the original single metal as the matrix.
Among them, Tungsten-Molybdenum alloy, tungsten-Rhenium alloy, tungsten-thorium alloy, tungsten-cerium alloy and tungsten-lanthanum alloy are used in aerospace, aircraft, nuclear power and other industries, and high-specific gravity alloy is used in armour-piercing and military industry. Tungsten cerium alloy, tungsten lanthanum alloy used for lighting, electric light source; Molybdenum-titanium-zirconium (TZM) alloy and molybdenum-Titanium-Nickel alloy will gradually replace pure molybdenum. Molybdenum niobium alloy (ITO) alloy is used in LCD touch screen and so on. At present, only Japan and Austria have mature production technology in the world, and their products occupy the international market. However, domestic intelligent metals used in aerospace, navigation, electronic display and other fields can only rely on imports.
