| abstract |
Process for the preparation of an α-SiAlON powder, characterized in that the process comprises the steps: Applying a heat treatment in a reducing and nitriding atmosphere to a precursor compound containing at least elemental components M, Si, Al and O, wherein M is an element or mixture of 2 or more elements selected from Li, Mg, Ca, Sr, Y , La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu are selected for reducing an oxygen content and increasing a nitrogen content of the precursor compound, wherein the reducing and nitriding atmosphere is a mixed one Gas atmosphere of ammonia and hydrocarbon gas is. |