Dysprosium Oxide Dy2O3

Product Properties

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

Specification of Dysprosium Oxide

 
Dy2O3 /TREO (% min.)99.999999.99999.9999.999
TREO (% min.)99.599999999
Loss On Ignition (% max.)0.50.50.511
Rare Earth Impuritiesppm 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
0.0052
0.012
0.005		0.05
0.21
0.3
0.3
0.3
0.3
0.32
0.05
Non-Rare Earth Impuritiesppm 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
0.011		0.003
0.03
0.031
0.02

 

Application of Dysprosium Oxide

  • Magnets: Dysprosium oxide is used to make dysprosium-iron alloys for neodymium-iron-boron (NdFeB) permanent magnets. Adding dysprosium improves the magnets’ performance, especially their high-temperature stability, which is crucial for applications in electric vehicles, wind turbines, and other high-performance motors.

  • Nuclear Reactors: The high neutron absorption capability of dysprosium oxide makes it useful in the control rods of nuclear reactors. Control rods are critical for maintaining the fission reaction at a safe and stable level.

  • Ceramics and Glass: Dysprosium oxide is added to ceramics and glass to modify their properties for specialized applications. In ceramics, it can enhance mechanical strength and thermal resistance. In glass, it can be used to absorb infrared light, making it useful for protective eyewear and filters in laser operations.

  • Phosphors and Display Technologies: Dysprosium oxide is used in the manufacturing of phosphors that are essential for color television tubes, fluorescent lamps, and LEDs. It contributes to the emission of bright, white light, improving the color range and brightness of displays.