99.99% min Dysprosium Oxide Dy2O3
Brief information of Dysprosium Oxide
Product:Dysprosium Oxide
Formula: Dy2O3
Purity:99.9999%(6N) ,99.999%(5N), 99.99%(4N),99.9%(3N) (Dy2O3/REO)
CAS No.: 1308-87-8
Molecular Weight: 373.00
Density: 7.81 g/cm3
Melting point: 2,408° C
Appearance: White powder
Solubility: Insoluble in water, moderately soluble in strong mineral acids
Multilingual: Dysprosium Oxid, Oxyde De Dysprosium, Oxido Del Disprosio
Application of Dysprosium Oxide
Dysprosium Oxide, is the main raw materials for Dysprosium Metal which is widely used in Neodymium-Iron-Boron magnets, also have specialized uses in ceramics, glass, phosphors, lasers and Dysprosium Metal halide lamp. High purity of Dysprosium Oxide is used in electronics industry as an antireflection coating in photoelectric devices. Because of dysprosium's high thermal-neutron absorption cross-section, Dysprosium-Oxide–Nickel cermets are used in neutron-absorbing control rods in nuclear reactors. Dysprosium and its compounds are highly susceptible to magnetization, they are employed in various data-storage applications, such as in hard disks.
Dysprosium oxide is used as an additive for neodymium iron boron permanent magnets. Adding about 2-3% of dysprosium to this type of magnet can improve its coercivity. In the past, the demand for dysprosium was not high, but with the increasing demand for neodymium iron boron magnets, it became a necessary additive element, with a grade of around 95-99.9%; As a fluorescent powder activator, trivalent dysprosium is a promising single emission center three primary color luminescent material activator ion. It is mainly composed of two emission bands, one is yellow light emission, and the other is blue light emission. Dysprosium doped luminescent materials can be used as three primary color fluorescent powders. Necessary metal raw materials for preparing large magnetostrictive alloy Terfenol, which can enable precise mechanical movements to be achieved.
It is used as raw material for producing dysprosium metal, dysprosium iron alloy, glass, metal halogen lamps, magneto-optical memory materials, yttrium iron or yttrium aluminum garne.
Preparation: Dysprosium nitrate solution reacts with sodium hydroxide solution to generate dysprosium hydroxide, which is separated and then burned to obtain dysprosium oxide:
Packaging：In steel drum with inner double PVC bags containing 50kg net each.
Specification of Dysprosium Oxide
| Dy2O3 /TREO (% min.) | 99.9999 | 99.999 | 99.99 | 99.9 | 99 |
| TREO (% min.) | 99.5 | 99 | 99 | 99 | 99 |
| Loss On Ignition (% max.) | 0.5 | 0.5 | 0.5 | 1 | 1 |
| Rare Earth Impurities | ppm max. | ppm max. | ppm max. | % max. | % max. |
| Gd2O3/TREO Tb4O7/TREO Ho2O3/TREO Er2O3/TREO Tm2O3/TREO Yb2O3/TREO Lu2O3/TREO Y2O3/TREO |
0.1 0.2 0.2 0.3 0.1 0.1 0.2 0.2 |
1 5 5 1 1 1 1 5 |
20 20 100 20 20 20 20 20 |
0.005 0.03 0.05 0.01 0.005 0.005 0.01 0.005 |
0.05 0.2 0.3 0.3 0.3 0.3 0.3 0.05 |
| Non-Rare Earth Impurities | ppm max. | ppm max. | ppm max. | % max. | % max. |
| Fe2O3 SiO2 CaO CuO NiO ZnO PbO Cl- |
1 10 10 5 1 1 1 50 |
2 50 30 5 1 1 1 50 |
10 50 80 5 3 3 3 100 |
0.001 0.015 0.01 0.01 |
0.003 0.03 0.03 0.02 |
Note:Relative purity, rare earth impurities, non rare earth impurities and other indicators can be customized according to customer requirements
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