YAG wet-chemical synthesis from chlorides and nitrates precursors: effect on phase evolution and powder sinterability
by Paola Palmero, Serena Di Nunzio, Laura Montanaro
International Journal of Materials and Product Technology (IJMPT), Vol. 35, No. 3/4, 2009

Abstract: The influence of inorganic precursors on phase evolution and powder sinterability of YAG has been investigated. YAG powders were synthesised by reverse-strike precipitation, from yttrium and aluminium chlorides or nitrates aqueous solution. The powders were characterised by thermal analysis and XRD measurements. Pure-YAG was obtained after calcination at high temperature from both precursors, but the chlorides-derived materials yield mixtures of YAG and metastable YAlO3 phases from 800°C to 1100°C. On the contrary, nitrates precursors led to the nucleation of pure-YAG at very low temperatures (from 500°C), thus allowing to directly produce well crystallised YAG powders, suitable for enhanced sintered products.

Online publication date: Sat, 23-May-2009

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