Talk:Aluminium oxynitride
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The patent and data sheet have been added to the article. It would be wonderful if someone fluent in patentese could sift through these to get accurate information in the summary table. --Eponymous Coward 00:55, 30 October 2005 (UTC)
[edit] I discarded the old chemical formula
Based on the correspondence principle, in the formula Al(64+x)/3O32-xNx (2.75 ≤ x ≤ 5) if we set x=0, we should get Al2O3, but instead we get Al64O32, equivalent to Al2O. This is wrong, however the increment part, 1/3rd extra aluminum needed for each O replaced by N, is correct. So the correct formula should be something like Al(64+x)/3O96-xNx, but then I don't know how to adjust the x range to correspond to that 2.75 to 5 range, what the original intent was there. In any case, this way of writing the formula is complicated, and the molecular weight is confusing, nonsense. Instead, I went with the simple AlN 30-37 mole%, rest Al2O3, found in aforementioned US patent.
