Abstract
Ammonium hydrogen carbonate was used as the precipitant to synthesize yttrium aluminate garnet (YAG) precursors from a mixed solution of aluminum and yttrium nitrates via coprecipitation. The carbonate precursor, with an approximate composition of NH4AlY0.6(CO3)1.9(OH)2 · 0.8H2O, transformed to pure YAG at 900 °C without the formation of intermediate phases. Reactive YAG powder was produced by calcining the precursor at 1100 °C. The YAG powder densified to 99.8% of the theoretical density by vacuum sintering at 1500 °C for 2 h, and the sintered body showed transparency. Less agglomeration of the precursor and good dispersity of the resultant YAG powder were responsible for the excellent sinterability.
| Original language | English |
|---|---|
| Pages (from-to) | 1864-1867 |
| Number of pages | 4 |
| Journal | Journal of Materials Research |
| Volume | 15 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2000 Sep |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Li, J. G., Ikegami, T., Lee, J. H., Mori, T., & Yajima, Y. (2000). Reactive yttrium aluminate garnet powder via coprecipitation using ammonium hydrogen carbonate as the precipitant. Journal of Materials Research, 15(9), 1864-1867. https://doi.org/10.1557/JMR.2000.0269