Terbium
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Terbium
structure -
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CAS No:
7440-27-9
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Formula:
Tb
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Chemical Name:
Terbium
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Synonyms:
Terbium;Terbium-159;110424-82-3
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CAS No:
Characteristics
0
0.00000
Silver-gray powder
8.234 g/mL at 25 °C(lit.)
1356 °C (polymorph)
255 °C
Insoluble in water.
Safety Information
III
8
UN 3089 4.1/PG 2
3
11-34-23/24/25
22-24/25-36/37/39-33-16-45-28-27-26
F,T
Stable, but moisture sensitive. Reacts with halogens, strong acids. The powder is highly flammable.
P210
H228
Terbium Use and Manufacturing
Terbium is primarily used in phosphors, particularly in fluorescent lamps and as the high intensity green emitter used in projection televisions, such as the Yttrium-Aluminum-Garnet (Tb:YAG) variety.
Terbium responds efficiently to x-ray excitation and is, therefore, used as an x-ray phosphor.
Terbium compounds are useful biological probes due to the long emission lifetime of terbium.
Terbium alloys are also used in magneto-optic recording films, such as TbFeCo.
Terbium is also used in alloys and in the production of electronic devices. As a component of Terfenol-D, Terbium is of use in actuators, in naval sonar systems, sensors, in the SoundBug device (its first commercial application), and other magnetomechanical devices.
Terbium Metal is the important additive for NdFeB permanent magnets to raise the Curie temperature and improve temperature coefficiency. Another most promising use of distilled Terbium Metal, code 6563D, is in the magnetostrictive alloy TEFENOL-D. There are also other applications for some special master alloys. Terbium Metal can be further processed to various shapes of ingots, pieces, wires, foils, slabs, rods, discs and powder.
Phosphor activator, dope for solid-state devices. There are few uses for terbium. However, terbium can be used as an activator for greenphosphor in TV tubes, and some of its compounds are used to produce laser lights. It is alsoused to “dope” (coat) some forms of solid-state instruments, as a stabilizer in fuel cells so thatthey can operate at high temperatures, and as a metal for control rods in nuclear reactors.
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Learn More Other Chemicals
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Terbium nitrate
10043-27-3
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Terbium sulfide (Tb2S3)
12138-11-3
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Terbium tungsten oxide (Tb2W3O12)
13701-74-1
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Terbium hydroxide (Tb(OH)3) Formula
12054-65-8
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Terbium trichloride hexahydrate Formula
13798-24-8
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Terbium oxide Formula
12738-76-0
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Terbium nitride (TbN) Structure
12033-64-6
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Terbium hydride (TbH3) Structure
13598-54-4
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What is Terbium fluoride (TbF3)
13708-63-9
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What is TERBIUM FLUORIDE
21031-92-5