Listing description
powder, mean
particle size 42500 micron, weight 50 g, purity 99.9%
Properties
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assay
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99.9%
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form
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powder
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mfr. no.
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Goodfellow, 063-956-76
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weight
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50 g
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mean particle size
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42500 μm
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Yttrium oxide, also known as yttria, is Y2O3. It is an air-stable, white solid substance. Yttrium oxide is used as a common starting material for both materials
science as well as inorganic compounds.
Detailed d
Uses
Gas Lighting
The original use of the mineral yttria and the
purpose of its extraction from mineral sources was as part of the process of
making gas mantles and other products for turning the flames of
artificially-produced gases (initially hydrogen, later coal gas, paraffin, or
other products) into human-visible light. This use is almost obsolete - thorium
and cerium oxides are larger components of such products these days.
Materials science
It is the most important yttrium compound and is
widely used to make Eu:YVO4 and Eu:Y2O3 phosphors that give the red
color in color TV picture tubes. Yttrium oxide is also used to make yttrium iron garnets, which are very effective microwave filters.
Y2O3 is used to make the high temperature
superconductor YBa2Cu3O7,
known as "1-2-3" to indicate the ratio of the metal constituents:
2
Y2O3 + 8
BaO + 12 CuO + O2 → 4
YBa2Cu3O7
This synthesis is typically conducted at
800 °C.
Inorganic synthesis
Yttrium oxide is an important starting point for
inorganic compounds. For organometallic chemistry it is converted to YCl3 in a reaction with
concentrated hydrochloric acid and ammonium chloride.
Lasers
Y2O3 is a prospective solid-state laser material. In
particular, lasers with ytterbium as dopant allow
the efficient operation both in continuous operation[4] and in pulsed
regimes.[5] At high
concentration of excitations (of order of 1%) and poor cooling, the quenching
of emission at laser frequency and avalanche broadband emission takes place.
Natural occurrence
Yttriaite-(Y), approved as a new
mineral species in 2010, is the natural form of yttria. It is exceedingly rare,
occurring as inclusions in native tungsten particles in a placer deposit of the Bol’shaja
Pol’ja river, Prepolar Ural, Siberia. As a chemical
component of other minerals, the oxide yttria was first isolated in 1789 by Johan Gadolin, from rare-earth
minerals in a mine at the Swedish town of Ytterby, near Stockholm.
PRICE
$6637.91/KG OR $3017.23/IB
For more information:
mobile: +2348039721941
contact person: emeaba uche
e-mail: emeabau@yahoo.com
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