· CAS:7429-91-6
· Molecular Formula: Dy
· Purity: 99.99%
· EINECS No.:231-073-9
Package Class:Vacuum Bag or with argon protection sealed
High Purity Dysprosium Metal (Dy)
Characteristic
Dysprosium is a chemical element with the symbol Dy and atomic number 66. It is a rare earth element with a metallic silver luster. As-cast dark gray powder is extremely susceptible to oxidation and ignition in the air.
Features： Lump
Melting point： 1680 K (1407 °C, 2565 °F)
Boiling point： 2840 K (2562 °C, 4653 °F)
Density (near r.t.)： 8.540 g/cm3
when liquid (at m.p.)： 8.37 g/cm3
Heat of fusion： 11.06 kJ/mol
Heat of vaporization： 280 kJ/mol
Molar heat capacity： 27.7 J/(mol·K)
Chemical Composition
Rare Earth Impurity(≤) | Dy/RE | ≥99.9% |
Item | La/RE | Ce/RE | Pr/RE | Nd/RE | Sm/RE | Eu/RE | Gd/RE |
Content(μm/g) | 11.70 | 10.60 | 11.20 | 2.40 | 5.10 | 2.10 | 14.50 |
Item | Tb/RE | Ho/RE | Er/RE | Tm/RE | Yb/RE | Lu/RE | Y/RE |
Content(μm/g) | 26.70 | 9.10 | 8.20 | 1.90 | 5.70 | 7.90 | 9.70 |
Non-Rare Earth Impurity(≤) | RE | ≥99.5% |
Item | Al | Fe | Ca | Si | Mg | C | Ni |
Content(μm/g) | 64.78 | 52.36 | 283.76 | 7.27 | 0.92 | 71.65 | 2.17 |
Application
Dysprosium is an important additive for NdFeB permanent magnets to raise the Curie temperature and improve temperature coefficiency. It is highly susceptible to magnetization, they are employed in various data-storage applications, such as in hard disks.
Dysprosium is used, in conjunction with vanadium and other elements, in making laser materials and commercial lighting. 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 is used in dosimeters for measuring ionizing radiation.
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