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Special formed

Erbium  
Formula: Er
Alias / Keywords: Erbium Rod, Erbium Metal Rod, Er Rod, Er Metal Rod, Erbium Tube, Erbium Metal Tube, Er Tube, Er Metal Tube, Erbium Circle, Erbium Metal Circle, Er Circle, Er Metal Circle, Erbium Plate, Erbium Metal Plate, Er Plate, Er Metal Plate, Erbium Disc, Erbium Metal Disc, Er Disc, Er Metal Disc, Erbium Sheet, Erbium Metal Sheet, Er Sheet, Er Metal Sheet, Erbium Foil, Erbium Metal Foil, Er Foil, Er Metal Foil, Erbium Wire, Erbium Metal Wire, Er Wire, Er Metal Wire, Erbium Bar, Erbium Metal Bar, Er Bar, Er Metal Bar, Erbium Powder, Erbium Metal Powder, Er Powder, Er Metal Powder, Erbium Block, Erbium Metal Block, Er Block, Er Metal Block, Erbium Cubit, Erbium Metal Cubit, Er Cubit, Er Metal Cubit, Erbium Crucible, Erbium Metal Crucible, Er Crucible, Er Metal Crucible
Item no.: 931068
Inquiry
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Pure erbium metal is soft and malleable and has a bright, silvery, metallic lustre. As with other rare-earth metals, its properties depend to a certain extent on impurities present. The metal is fairly stable in air and does not oxidise as rapidly as some of the other rare-earth metals, mainly metallurgical uses; added to vanadium, for example, erbium lowers hardness and improves workability; also a few applications for nuclear industry.


[Bohr Model of Erbium]
Atomic Volume: 18.1 W/D
Boiling Point: 2868 °C
Compressibility: 2.39x10-6 cm2/kg
Covalent Radius: 1.57 Angstroms
Crystal Structure: Hexagonal
Density (18°C): 9.066 g/cm3
Electrical Resistivity (298K): 86.0 μΩ-cm
Electronegativity: 1.2 Pauling's
Heat of Fusion: 4.1 k-cal/g-atom
Heat of Vaporization: 67 K-cal/g-atom
Magnetic Moment: 9.5 Bohr magnetons
Magnetic Susceptibility: 44,100x10-6 emu
Melting Point: 1529 °C
Specific Heat (25°C): 0.040 cal/g°C
Standard Electrode Pontential: +2.1 volts
Tensile Strength: 42,400 psi
Thermal Conductivity: 0.023 cal/cm2/s/°C
Thermal Neutron Cross Section: 166 barns/atom
Yield Strength: 38,700 psi
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Applications

Some Erbium is added to alloys with metals such Vanadium because it lowers their hardness, making them more workable. Due to its adsorption of infrared light, Erbium is added to the glass of special safety spectacles for workers, such as welders and glass-blowers. It is used as a photographic filter as well, and to dope optical fibers at regular intervals to amplify signals. Finally, due to its pink colour, Erbium is sometimes used as a glass and porcelain enamel glaze colorant.

Erbium in the environment

Erbium is never found as a free element in nature. It is found in minerals that include all the rare-earth elements. Erbium is one of the more abundant rare-earth elements. The main mining areas are China and US. The most important ores are monazite and bastanite, were it is present in extrable amounts. Better suorces of the element are xenotime and euxenite. World production of Erbium is 500 tonnes per year.

Health effects of Erbium
Erbium has no biological role even if it has been noted that it stimulates metabolism. It is difficult to determine the amount of herbium present in the human body. The levels are highest in bones, with smaller amounts being present in the liver and kidneys.

Environmental effects of erbium

Holmium poses no Environmental therat to plants and animals.

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