Solid State Science and Technology, Vol. 17, No 2 (2009) 89-95

ISSN 0128-7389

Corresponding Author: razali177@gmail.com

89

THE DECOMPOSITION OF BaCe0.95Yb0.05O2.975 PREPARED BY DIFFERENT PREPARATION ROUTES

M.R.M. Toop1, H.A. Hamid1, N. Osman1, Z.R.Hassan1

and I.A. Talib2

1 Faculty of Applied Science, UiTM, 02600 Arau, Perlis, Malaysia

2 Faculty of Science and Technology, UKM, 43600 Bangi, Selangor, Malaysia

 

ABSTRACT

The oxidation behaviour from different metal salts influenced the formation of oxide ceramics. Three different preparation routes namely, solid state reaction (SSR), sol-gel (SG) and modified Pechini (PM) were used to synthesize a compound of BaCe0.95Yb0.05O2.975. The thermal decomposition behaviour of this compound was carried out using thermogravimetric analysis (TGA). The thermal decomposition for SG and PM occurred in three stages but only two stages for SSR as shown in thermogravimetric (TG) signal. The exothermic reaction process to form oxide compound was shown by the derivative thermogravimetric (DTG) signal. The calcined powders at T=1000C, 1100C and 1300C by different routes were also analyzed by

Fourier transform infrared spectrometry (FTIR) to identify the traces of carbonate species.

 

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