Basic application areas of scandium oxide
High purityscandium oxideMainly used as raw materials for metal scandium and scandium materials, in the metallurgical industry, for the manufacture of alloys, in the nuclear industry as a material for the emission of thermionic alternators, for solid fuel cells, memory memory single substrates, solid state magnetic refrigeration Medium, inhibitor, samarium cobalt magnet additive, x-ray intensifying screen, magnetic refrigerant for various phosphors, neutron absorption material in atomic reactor, magnetic bubble material, intensifying screen material. In optical glass, It is also useful in the electronics industry and other aspects. The fundamental application areas of scandium oxide are as follows:
New Electric Light Source Materials and Optical Materials
Scandium is used as an electric light source material, and a metal halide lamp made of scandium iodide (ScI3) and scandium foil—sodium scandium lamp has already entered the commercial market. The lamp is a halide discharge lamp, which is charged with NaI\/ The sodium atoms and scandium atoms in the ScI3 tube are excited, and when they jump from the excited state of the high energy level back to the lower energy level, they radiate light of a certain wavelength. The spectral line of sodium is 589589.6nm yellow light, and the spectrum of scandium The line is near-ultraviolet and blue light at 361.3424.7nm, scandium and sodium spectral line matching is just close to sunlight. Back to the ground state of scandium, the sodium atom can be synthesized with iodide again, so that the cycle can be maintained relatively in the lamp tube. High atomic concentration and prolong service life. A scandium-sodium lamp with the same illuminance saves 80% of electricity than ordinary incandescent lamps, and the service life is as long as 500025000hr. It is precisely because the scandium sodium lamp has high luminous efficiency, good light color, energy saving, The characteristics of long life and strong ability to break fog make it widely used in TV cameras and squares, gymnasiums, and road lighting. 10 million, Japan's products also exceed 10 million, and the amount of scandium is more than 40Kg. China started late in this regard, but has also implemented a "big lamp replacement" plan. The development and improvement of global halogen lamps are in the process of As it expands, the demand for scandium will become more and more urgent.
Sc2O3 with a purity of 99.999.99% is added to yttrium gallium garnet (GGG) to make yttrium gallium scandium garnet (GSGSS), the latter's emission power is 3 times higher than the former. GSGG can be used in anti-missile defense systems, military Communication, underwater lasers for submarines and various fields of industry, the main users are the United States and Japan.
The secondary optical refractive index of LiNbO3 crystal containing Sc2O3 is reduced, which is suitable for the manufacture of parameter frequency selectors, waveguides and light guide switches. Adding scandium to optical glass, silicate glass and boron glass can improve the refractive index of the glass and improve the reflection performance.scandium oxideGlass enables the manufacture of optical fibers in the mid-infrared region of the spectrum.
