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Translucent yttrium aluminum garnet: Microwave-assisted route to synthesis and processing

Panneerselvam, M and Subanna, GN and Rao, KJ (2001) Translucent yttrium aluminum garnet: Microwave-assisted route to synthesis and processing. In: Journal of Materials Research, 16 (10). pp. 2773-2776.


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A novel and fast microwave route is described for the synthesis of yttrium aluminum garnet (YAG) and for its sintering to translucent bodies. Precursor was made by microwave decomposition (20 min) of aluminum tri-sec-butoxide and yttrium nitrate dissolved in ethyl acetate. The precursor, conventionally calcined at 1000 °C (1 h), was sintered in microwave using SiC as secondary heater for just 35 min. Resulting translucent YAG has a microhardness (HV) of 18.1 GPa and fracture toughness (KIC) of 4.3 MPa m1/2. A 0.86-mm-thick sintered pellet exhibits approximately 45% transmission for 520-nm radiation. The entire microwave process requires less than 3 h.

Item Type: Journal Article
Publication: Journal of Materials Research
Publisher: Materials Research Society
Additional Information: The copyright belongs to the Materials Research Society.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 07 Sep 2004
Last Modified: 18 Aug 2011 07:20
URI: http://eprints.iisc.ac.in/id/eprint/1961

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