Nano $Al_2O_3-Pb$ and $SiO_2-Pb$ cermets by sol-gel technique and the phase transformation study of the embedded Pb particles

Bhattacharya, P and Chattopadhyay, K (1999) Nano $Al_2O_3-Pb$ and $SiO_2-Pb$ cermets by sol-gel technique and the phase transformation study of the embedded Pb particles. In: Nanostructured Materials, 12 (5-8). pp. 1077-1080.

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Abstract

Sol-gel processing followed by $H_2$ reduction is used to produce dispersions of nanosized Pb in amorphous $SiO_2$ and ultrafine $\gamma-Al_2O_3$ matrices. A depression of 3-5 K in Pb melting point is reported. The size and shape of these metastable particles in molten and solid state are discussed in the light of the experimental observations and expectations from the intersection group theory for equilibrium shape

Item Type: Journal Article Copyright of this article belongs to Elsevier Science Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) 17 Jul 2007 19 Sep 2010 04:36 http://eprints.iisc.ernet.in/id/eprint/10149