Molecular formula: Y2O3
Molecular weight: 113.16
White powder, density 5.01g/cm3, melting point 2410 C, insoluble in water and alkali, soluble in acid.
Additive for iron and steel and nonferrous alloys. Usually FeCr alloy containing 0.5-4% yttrium yttrium can enhance the oxidation resistance and ductility of these stainless steel; MB26 alloy adding y-rich mischmetal, the mechanical properties of the alloys have been significantly improved, can replace part of the strong Aluminum Alloy for stress components of the aircraft; In the Al-Zr alloy by adding a small amount of yttrium rich rare earth. Can improve the conductivity of the alloy; Alloy has been used in most of the domestic wire factory; Adding yttrium in copper alloy, improve the conductivity and mechanical strength; Silicon nitride ceramic material containing yttrium aluminum 2% and 6%, can be used to develop the engine components; For power Nd: YAG laser beam of 400 watts to drilling, the large component of cutting and welding and other mechanical processing for electron microscopy; Fluorescence screen Y-Al garnet single crystal films, fluorescence of light scattering of high brightness, low absorption, high temperature resistance and Resistance to mechanical wear performance is good; For high yttrium alloy structure can be used in aviation and other requirements of low density and high melting point of the occasion; For yttrium doped SrZrO3 high temperature proton conductive material, production of fuel cell and electrolytic cell and hydrogen requirements the high solubility of gas sensor has important significance; For high-temperature spraying materials, nuclear reactor fuel diluent, permanent magnetic material additive and the electronics industry for getter etc...
|Rare earth impurities /REO||Non rare earth impurities|
English alias: Oxide Lanthanum
Chemical formula: La2O3
Relative molecular weight: 325.8091
CAS number: 1312-81-8
EINECS number: 215-200-5
Melting point: 2217
Water soluble: Slightly soluble in water
Products should be white crystals. Product clean, no obvious mechanical inclusions.
Packing: 1000 kg ton bag.
1 used in the manufacture of special alloy precision optical glass, high refractive index optical fiber board, suitable for camera, camera, microscope lens and advanced optical instrument prism, etc. .,
2 used in the manufacture of ceramic capacitors, piezoelectric ceramic doped agent and X - ray luminescent materials, such as lanthanum bromide.
3 used as a catalyst for a variety of reactions, such as the oxidation of carbon monoxide when doped with cadmium oxide reaction, the reaction of carbon monoxide hydrogenation to produce methane.
4 impregnated lithium oxide or zirconium oxide (1%) lanthanum oxide can be used in the manufacture of ferrite magnets.
5 is a very effective selective catalyst for the oxidative coupling of methane to ethylene and ethylene.
6 for improving the temperature dependence and dielectric properties of barium titanate (BaTiO3), strontium titanate (SrTiO3) ferroelectric, and the fabrication of fiber optic devices and optical glass.
Carbonate precipitation method to the extraction separation of lanthanum chloride solution as raw materials, ammonium bicarbonate and precipitation of lanthanum carbonate, by heating, aging, washing, separation, and burning of lanthanum oxide. Can be prepared by heating the decomposition of lanthanum oxalate.
Products non-toxic, tasteless, no stimulation, safe and reliable, stable performance. But with the chemical reaction of water, hydrogen production, easy to ignite.
Flammable risk characteristics: Non combustible.
Transportation characteristics: Transportation should prevent insolation, rain, high temperature resistant. Should stay away from the fire, heat, high temperature zone. Extinguishing agent: Dry powder fire extinguisher.