Tripathi, Himansu Shekhar and Sarin, Vinod K (2007) Synthesis and densification of lutetium pyrosilicate from lutetia and silica. Materials Research Bulletin, 42 (2). pp. 197-202. ISSN 0025-5408

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Abstract

Cerium-doped lutetium pyrosilicate (Lu2Si2O7:Ce) powder was synthesized by solid state reaction of Lu2O3 and SiO2. Stoichiometric mixtures of the starting materials were heat treated at various different temperatures and their phase contents were measured by XRD technique. It was found that the first step in the formation of Lu2Si2O7 (LPS) is the appearance of Lu2SiO5 (LSO). This takes place at 1100 8C, fully 300 8C below the first appearance of LPS. Between 1400 and 1500 8C both LSO and LPS coexist in the calcined batch, but by 1550 8C all LSO is completely converted to LPS. LPS formation temperature does not have appreciable effect on the density of the hot pressed samples. Hot pressed samples obtained from powder synthesized at 1650 8C are nearly transparent, although the particle size of the starting powder is higher than that of the powder formed at lower temperatures.

Item Type:	Article
Uncontrolled Keywords:	Ceramics; Oxides; Chemical synthesis; X-ray diffraction
Subjects:	Engineering Materials
Divisions:	Refractory
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Mar 2012 05:39
Last Modified:	16 Mar 2012 05:39
URI:	http://cgcri.csircentral.net/id/eprint/1239

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