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

Panneerselvam, M. ; Subanna, G. N. ; Rao, K. J. (2001) Translucent yttrium aluminum garnet: microwave-assisted route to synthesis and processing Journal of Materials Research, 16 (10). pp. 2773-2776. ISSN 0884-2914

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Official URL: http://journals.cambridge.org/action/displayAbstra...

Related URL: http://dx.doi.org/10.1557/JMR.2001.0379

Abstract

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:Article
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ID Code:91056
Deposited On:16 May 2012 08:32
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