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Scandium is a chemical element with the symbol Sc and atomic number 21. ... The world production of scandium is in the order of 15–20 tonnes per year, ...
Scandium(III) oxide or scandia is a inorganic compound with formula Sc 2 O 3.It is one of several oxides of rare earth elements with a high melting point.It is used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material).
The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), [1] are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals.
Scandium hydride is not well understood, although it appears not to be a saline hydride of Sc(II). [5] As is observed for most elements, a diatomic scandium hydride has been observed spectroscopically at high temperatures in the gas phase. [6] Scandium borides and carbides are non-stoichiometric, as is typical for neighboring elements. [7]
Aluminium–scandium alloys (AlSc) are aluminum alloys that consist largely of aluminium (Al) and traces of scandium (Sc) as the main alloying elements.In principle, aluminium alloys strengthened with additions of scandium are very similar to traditional nickel-base superalloys in that both are strengthened by coherent, coarsening resistant precipitates with an ordered L1 2 structure.
Focus on polymetallic mines that can produce multiple critical minerals from a single orebody and can also expand production by recycling post-consumer waste streams, such as rare earth permanent ...
The most available element in group 3 is yttrium, with annual production of 8,900 tonnes in 2010. Yttrium is mostly produced as oxide, by a single country, China (99%). [75] Lutetium and scandium are also mostly obtained as oxides, and their annual production by 2001 was about 10 and 2 tonnes, respectively. [76]
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