BecauseOxidized SCProducts have a unique physical and chemical properties, so since the 1980s, in many high-tech and industrial sectors have been better application development. At present, China and the world'sOxidized SCThe application status of alloys, electric light source, catalyst, activator and ceramics is described later.
Applications in Alloys
At present, the aluminum SC alloy (AL-SC) made of SC and aluminum has the advantages of small density (SC is 3.0g/cm3,al as 2.7g/cm3, high strength, hardness, good plasticity, corrosion resistance and strong thermal stability, so the structural parts of missile, aerospace, aviation, automobile and ship have been better applied, And gradually turned to civilian, such as sports devices (hockey and baseball handle stick), computer and mobile phone shell, etc., it has high strength, stiffness and light quality characteristics, very practical value.
In the alloy, SC mainly plays the role of metamorphism and thinning grain, which makes the AL3SC type of the new phase and presents the characteristic of excellent performance. AL-SC Alloy has formed a series of alloy series, such as Russia has reached 17 kinds of AL-SC series, China also has several alloys (such as AL-MG-SC-ZR and AL-ZN-MG-SC alloy). The characteristics of this type of alloy can not be replaced by other materials, so from the development point of view, its application development and potential is very large, is expected to become a major application in the future. If Russia has been industrially produced and used for the rapid development of light structural parts, our country is also accelerating development and application, especially in aerospace and aviation, the best prospects.
Application of new electric light source materials
With pureOxidized SCTransformed into ScI3 and Nai made into a new type of third generation electric light source material, and processed into SC-sodium halogen lamps for lighting (each lamp about sc2o3≥99% material for 0.1mg~ 10mg. This lamp under the action of High Voltage, SC spectral line is blue, sodium spectral line is yellow, two colors with each other to produce light close to sunlight, so that the light has high luminosity, good light color, energy-saving energy, long life and strong fog resistance and other advantages.
Applications in laser materials
Using pure oxidized SC ≥99.9% added to gadolinium gallium garnet (GGG) can be made of gadolinium gallium SC garnet (GGSG), which is composed of gd3sc2ga3o12 type. The third generation laser made by it emits 3 times times more transmitting power than the same volume laser, has reached the high-power and miniaturized laser device, improves the laser oscillation output power, and improves the performance of the laser. In the preparation of single crystal, each furnace 3kg~ 5kg, adding sc2o3≥99.9% raw materials for about 1.0kg. At present, the application of this laser in military technology is more and more extensive, but also gradually pushed to the civil industry. From the perspective of development, the potential for military and civilian use is greater in the future.
Applications in electronic materials
The pure Sc2o3 can be used as the oxidation cathode activator of the cathode electron gun of the color TV imaging tube, and the effect is better. Spray a layer of BA, SR, CA oxide layer One millimeter thick on the upper end of the color tube cathode, and then disperse a layer of 0.1 mm thick oxidized sc. In the oxide layer cathode due to MG, Sr and Ba reaction, promote BA reduction, release of electrons more active, emit large current electrons, so that fluorescent body luminescence, than the cathode without Sc2o3 coating can increase the current density 4 times times, make the TV picture more clear, so that the cathode life increased by 3 times times. The amount of oxidized SC for each 21-inch imaging cathode is 0.1mg. At present, some countries in the world have used this cathode, such as Japan, can improve market competitiveness and promote the sales of television sets.
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