Citation: Izumi, F.; Mitomo, M.; Bando, Y. (1984). Rietveld refinements for calcium and yttrium containing \a-sialons. Journal of Materials Science, 19, pp. 3115-3120.
Formula: Al2.7 N15.1 O0.9 Si9.3 Y0.5
Chemical name:Yttrium alumosilicate nitrogen oxide *