|APS||<40um(can be customized)|
|Melting Point||1526 °C|
|Boiling Point||3336 °C|
Yttrium is a chemical element with the symbol Y and atomic number 39. It is a silvery metallic transition metal chemically similar to lanthanides and has often been classified as a “rare-earth element”. Yttrium is almost always combined with elements of lanthanides in rare earth minerals and is never found in nature as a free element. The 89Y is the only stable isotope and the only isotope found in the earth’s crust.
In 1787, Carl Axel Arrhenius found a new mineral near Ytterby in Sweden and called it titbits, in honor of the city. Johan Gadolin discovered yttrium oxide in the Arrhenius sample in 1789 and Anders Gustaf Ekeberg called the new yttrium oxide. The elementary yttrium was isolated for the first time in 1828 by Friedrich Wöhler.
The most important uses of the yttrium are LEDs and phosphors, in particular, red phosphors in cathode ray tube televisions (CRTs). Yttrium is also used in the production of electrodes, electrolytes, electronic filters, lasers, superconductors, various medical applications, and in the tracking of various materials to improve their properties.
Yttrium does not have a known biological role. Exposure to yttrium compounds can cause lung disease in humans.