| Certification: | ISO |
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| Shape: | Block |
| Purification Method: | Zone Refining |
| Preparation Method: | Metallothermic Reductio |
| Application: | Catalyst Masses, Energy Materials, Photoelectric Material, Photorecording Material, Medicine, Astronavigation |
| Product Type: | Rare Earth Oxide |
| Samples: |
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| Customization: |
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Dysprosium metal
Dysprosium alloy
Dysprosium powder
Dysprosium particle
Dysprosium is a silver-white metal with the element symbol Dy. It is soft and can be cut with a knife.
Dysprosium has a melting point of 1412°C, a boiling point of 2562°C and a density of 8.55g/cm3. It has superconductivity near absolute zero. Dysprosium is fairly stable in air and is readily oxidized by air and water at high temperatures to form dysprosium oxide. Dysprosium is mainly used in the manufacture of new lighting sources dysprosium lamps; Dysprosium can be used as a control material for reactors; Dysprosium compounds are used as catalysts in the oil refining industry.
Soft metal, shiny and malleable [2]. It is easily corroded by air at high temperature, but stable at room temperature. It works slowly with water. There are several isotopes: 156Dy, 158Dy, 160Dy~164Dy.
Dysprosium - rare earth elements that are useful but hard to get
Dysprosium - rare earth elements that are useful but hard to get
Element symbol: Dy
English name: Dysprosium
Chinese name: Dysprosium
CAS No. : 7429-91-6 [3]
Greek: dysprositos (meaning hard to get).
Vickers Hardness: 540MPa
Element type: Metal
Atomic weight of element: 162.5
Atomic number: 66
Relative atomic mass: 162.5
Common valence: +3
Electronegativity: 1.22
Peripheral electron configuration: 4f10 6s2
Electron configuration: 2,8,18,28,8,2
Oxidation state:
Main Dy+3
Other Dy+2,Dy+4
The propagation rate of sound in it: (m/S) 2710
Ionization energy (kJ/mol)
M - M+ 571.9
M+ - M2+ 1126
M2+ - M3+ 2200
M3+ - M4+ 4001
Crystal structure: the cell is hexagonal.
Dysprosium iron alloy
Dysprosium iron alloy
Cell parameters:
a = 359.3pm
b = 359.3pm
c = 565.37pm
Alpha is equal to 90 degrees
Beta = 90°
Gamma is equal to 120 degrees
Isotopes and Radiation: Dy-154[3000000y] Dy-156 Dy-157[8.1h] Dy-158 Dy-159[144.4d] Dy-160 Dy-161 Dy-162 Dy-163 *Dy-164 Dy-165[2.3h] Dy - 166 [d] 3.4
Electron affinity sum energy: 0KJ·mol-1
Elemental density: 8.536g/cm3
Elemental melting point: 1412.0ºC
Elemental boiling point: 2562.0ºC
Atomic radius: 2.49 angstroms
Ionic radius: 1.03(+3) angstroms
Covalent radius: 1.59 angstroms
Common compounds: None
Element content:
Content in the crust: (ppm) 6
Element content in the Sun :(ppm)0.002
Element content in seawater :(ppm) Atlantic Surface 0.0000008
Atomic volume :(cubic centimeter/mole)19
Chemical properties editor
Dysprosium metal preserved in paraffin oil
Dysprosium metal preserved in paraffin oil
Silver-white rare earth metals. Low hardness, lively nature. Easily oxidized by oxygen, reacts quickly with water and dissolves in acid. Used for making magnets alloys, infrared generating equipment, laser materials and atomic energy industry.
The main uses of dysprosium are:
(1) As an additive of NdFeb permanent magnet, adding about 2~3% dysprosium to this magnet can improve its coercivity. In the past, dysprosium was not in large demand, but with the increase in demand of NdFeb magnet, it has become a necessary element, and the grade must be in 95 ~ 99. At around 9%, demand is also increasing rapidly.
Dysprosium can be used to make hard drives
Dysprosium can be used to make hard drives
(2) Dysprosium is used as a phosphor activator. Dysprosium trivalent is a promising activator ion of single luminescent center trichromic luminescent materials. It mainly consists of two emission bands, one is yellow light emission and the other is blue light emission.
(3) Dysprosium is an essential metal material for the preparation of large magnetostrictive alloy Terfenol, which enables some precise activities of mechanical motion.
(4) Dysprosium metal can be used as a magneto-optical storage material with high recording speed and reading sensitivity.
Dysprosium bulb
Dysprosium bulb
(5) For the preparation of dysprosium lamp, dysprosium iodide is the working substance used in dysprosium lamp, this lamp has the advantages of large brightness, good color, high color temperature, small size, stable arc, etc., has been used in film, printing and other lighting sources.
Dysprosium halides are used as metal halide luminescent materials [7] in the manufacture of dysprosium lamps, a new lighting source. Dysprosium lamp is a new gas discharge light source with high light efficiency (75ll11/w above), high color rendering (color rendering index above 80), long life, spherical, tubular, ellipsoid and other shapes to meet the needs of different uses, light color is very close to the sun, is the leader of metal halide lamp towel and the ideal green lighting source. Dysprosium lamp uses dysprosium iodide as the working substance, which has the advantages of large brightness, good light color, high color temperature, small size and stable arc. Dysprosium light is suitable for film and television shooting and broadcasting, sports venues, exhibition halls, construction sites and wharves lighting, stage light tracing, color printing, photographic plate making, plate lighting and other aspects, it is becoming the leading role of the capital Games venues lighting. Dysprosium can also be combined with iodide and bromide of other rare earths, such as holmium, erbium, and scandium, to make light-source materials of the same color. Widely used in square, airport, buildings, billboards three-dimensional decoration lighting. Dysprosium lamps are evolving from outdoor to indoor lighting in hotel lobbies, exhibition halls and shop Windows. Dysprosium lamp with reflective port light color has high radiation intensity, low infrared radiation, light concentration and high light utilization in the broad spectral region of blue violet light to orange red light.
(6) Due to its large neutron capture cross-sectional area, dysprosium is used in the atomic energy industry to measure neutron spectra or as a neutron absorber.
(7) Dy3Al5O12 can also be used as a magnetic working substance for magnetic cooling. With the development of science and technology, dysprosium applications will continue to expand and extend.
(8) dysprosium [7] is used as an additive to improve the coercivity of ndfeb permanent magnet materials. Coercivity is an important parameter to measure the properties of permanent magnet materials. It indicates the ability of a magnet to resist external anti-magnetic field. The higher the coercivity of a magnet, the less likely it is to demagnetize and the longer its service life. Add 2% ~ 3% dysprosium in the NdFeb magnet, can significantly improve the coercivity (demagnetization resistance) of the magnet, has become a high-performance NdFeb permanent magnet material necessary to add elements. With the rapid development of NdFeb permanent magnet material industry, the demand for dysprosium is also growing rapidly. In recent years, dysprosium has always been in demand despite the weak price of rare earth "f" field. In order to reduce production costs, dysprosium iron is often used in the way of making it.
(9) Compounds of dysprosium are used as catalysts in oil refining and the chemical industry. For example, adding dysprosium as a structural additive in the catalyst of ferrioxy ammonia synthesis can improve the catalytic activity and heat resistance of the catalyst. Dysprosium oxide can be used as high frequency dielectric ceramic component materials, whose structure is Mg0 ~ Ba0 Dy0n -- Ti02, which can be used in dielectric resonators, dielectric filters, dielectric diplex and communication devices.
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