Technology, Patent, News, Process, Company, Report,
- Gadolinium is a
chemical element with symbol Gd and atomic number 64 and it is a
soft, shiny, ductile, silvery metal belonging to the lanthanide
group of the periodic chart.
- It is a paramagnetic
metal ion. Paramagnetic ions, such as gadolinium, move differently
within a magnetic field.
- It has found some use
in control rods for nuclear reactors and nuclear power plants.
- It is used to make
garnets for microwave applications and its compounds are used for
making phosphorous for colour TV tubes.
- It has the highest
thermal neutron capture cross-section of any known element. It
combines with most elements to form Gd(III) derivatives.
- This type of
gadolinium metal is available commercially so it is not normally
necessary to make it in the laboratory, which is just as well as it
is difficult to isolate as the pure meta.
- Pure gadolinium is
available through the reduction of GdF3 with calcium metal.
- It does not react in
dry air but will tarnish to a flaky white oxide in moist air that
does not protect it from further oxidation.
- Use of gadolinium is
alloys of iron and chromium to improve resistance to high
- Gadolinium compounds
are used as green phosphors in color television picture tubes.
- It has 27 isotopes
whose half-lives are known, with mass numbers 137 to 164.It produces
colourless salts and the metal reacts slowly with water and is
soluble in dilute acid.
- Gadolinium is found in
several other minerals, including monazite and bastnasite, both of
which are commercially important.
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