Terbium
MATERIAL OVERVIEW
Characteristics: A silvery-white rare earth metal that is malleable and ductil and soft enough to be cut with a knife. Terbium is never found in nature as a free element, however, is contained in many minerals such as: cerite, gadolinite, monazite, xenotime and euxenite. It reacts slowly with water and soluble in dilute acids. The salts are colorless. It is highly reactive and should be handled in an inert atmosphere or vacuum.
Derivation: Most separation processes for terbium salt from the rare-earth salt solution is ion exchange. In this process, rare-earth ions are sorbed onto suitable ion-exchange resins by exchange with hydrogen, ammonium or cupric ions present in the resin. The rare earth ions are then selectively washed out by a suitable complexing agent. As with other rare earths, terbium metal is produced by reducing the anhydrous chloride or fluoride with calcium metal. Calcium and tantalum impurities can be removed by vacuum re-melting, distillation, amalgam formation or zone melting.
Terbium is used as a dopant in calcium fluoride, calcium tungstate and strontium molybdate, materials that are used in solid-state devices, and as a crystal stabilizer of fuel cells which operate at elevated temperatures.
Hazards: As with the other lanthanides, terbium compounds are of low to moderate toxicity, although their toxicity has not been investigated in detail.
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GENERAL PROPERTIES
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Symbol: |
Tb |
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Atomic Number: |
65 |
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Atomic Weight: |
158.9254 |
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Density: |
8.229 gm/cc |
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Melting Point: |
1356 oC |
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Boiling Point: |
3123 oC |
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Thermal Conductivity: |
0.111 W/cm/K @ 298.2 K |
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Electrical Resistivity: |
- |
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Electronegativity: |
1.2 Paulings |
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Specific Heat: |
0.0437 Cal/g/K @ 25 oC |
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Heat of Vaporization: |
70 K-Cal/gm atom at 3123 oC |
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Heat of Fusion: |
3.90 Cal/gm mole |
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Thermal Neutron Cross Section: |
44 Barns per Atom |
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Magnetic Susceptibility: |
172,000 x 10-6 Emu @ Room Temp |
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Magnetic Moment: |
9.05 Bohr Magnetons |
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Temperature Coefficient of Resistance: |
0 oC to Room Temp |
TYPICAL ANALYSES - Impurities in ppm
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Material / Purity: |
3N |
| Ca | <100 |
| Fe | 100 |
| Gd | <100 |
| Ni | 200 |
| Si | <100 |
| Y | <100 |
| Eu | <100 |
| Dy | 100 |
| Mg | <100 |
| Al | <100 |
TERBIUM ROD
|
Material |
Purity |
| Terbium Rod .250” | 3N |
| Terbium Rod .500” | 3N |
Rod is cut to order and sold by the inch or foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes.
TERBIUM FOIL
|
Material |
Purity |
| Terbium Foil .001” | 3N |
Terbium Foil .002”  |
3N |
| Terbium Foil .003” | 3N |
Terbium Foil .004”  |
3N |
| Terbium Foil .005” | 3N |
| Terbium Foil .006” | 3N |
Terbium Foil .007”  |
3N |
| Terbium Foil .008” | 3N |
| Terbium Foil .009” | 3N |
Foil is cut to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes.
TERBIUM SHEET
|
Material |
Purity |
Terbium Sheet .010”  |
3N |
| Terbium Sheet .020" | 3N |
| Terbium Sheet .024" | 3N |
| Terbium Sheet .050" | 3N |
Sheet is cut to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes.
TERBIUM SPUTTERING TARGETS
|
Material |
Purity |
| Terbium Sputtering Target 2"D X .125"T | 3N |
| Terbium Sputtering Target 2"D X .250"T | 3N |
| Terbium Sputtering Target 3"D X .125"T | 3N |
| Terbium Sputtering Target 3"D X .250"T | 3N |
| Terbium Sputtering Target 4"D X .125"T | 3N |
| Terbium Sputtering Target 4"D X .250"T | 3N |
Targets are made to order and packaged individually. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters, thicknesses or custom sizes.
TERBIUM POWDER, SHOT, PELLETS & INGOT
|
Material |
Purity |
Terbium Chips  |
3N |
Terbium Ingot  |
3N |
| Terbium Powder -40 Mesh, Under Oil | 3N |
Terbium Powder -40 Mesh, Ampoules Under Dry Argon  |
3N |
Terbium Powder -40 Mesh, Cans Under Dry Argon   |
3N |
Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.
TERBIUM COMPOUNDS
|
Material |
Purity |
| Terbium Chloride TbCl3-xH2O -60 Mesh | 3N |
| Terbium Chloride TbCl3 -60 Mesh | 3N |
| Terbium Fluoride TbF3 1/4" to 1/8" Pieces | 3N |
| Terbium Fluoride TbF3 -325 Mesh | 3N |
| Terbium Oxide Tb4O7 -325 Mesh | 3N, 5N |
| Terbium Oxide Tb4O7 1/2" to 1/8" Pieces | 3N |
Compounds are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.
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