Talk:Yttrium(III) oxide

Not very relevant to this report

Dear all: in case I might have overstepped, the following statements were removed from this report on yttrium oxide:

• "Small amounts of the element (0.1 to 0.2%) have been used to reduce grain size of chromium, molybdenum, titanium, and zirconium. It is also used to increase the strength of aluminium and magnesium alloys."

And the following statement is too vague to be useful, IMHO: ""It can also be used as a catalyst for ethylene polymerization." Define "it".

• "Any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive"

--Smokefoot 21:42, 19 March 2006 (UTC)

a hazard or not?

Why does it hav a level-three health tag? -lysdexia 23:59, 29 September 2006 (UTC)

melting point of ${\rm {Y_{2}\!~O_{3}}}$

In the Thesis "Grow and Spectroscopy of Ytterbium-doped sesquioxydes" by Volker Peters, (Shaker Verlag, 2001), for the melting point of ${\rm {Y_{2}\!~O_{3}}}$, value ${\rm {2430^{o}}}$ C is suggested, instead of 2690 °C in the article Yttria.

TV picture tubes?

Is Yttrium oxide really "widely used" to make phosphors in TV picture tubes, given that we don't make picture tubes TVs any more? -- 203.222.137.117 (talk) 06:30, 11 August 2022 (UTC)

gas mantles

In this article, it says that yttrium oxide is no longer used in gas mantles, as thorium has replaced it. But in the thorium article it says that yttrium oxide has replaced thorium oxide. Which is correct? Birbytuber (talk) 09:31, 27 January 2024 (UTC)