Influence of Grain Size on the Thermal Diffusivity of Pt-SnO2 Ceramic

Author:

Aiza M.M.1,Zaidan A.W.1,Wan Mahmood Mat Yunus1,Khamirul A.M.1

Affiliation:

1. Universiti Putra Malaysia

Abstract

Pt-SnO2 ceramics were prepared via solid-state route from a mixture of powders of (100-x) SnO2.x Pt (0≤ x wt %≤ 1). The samples were then sintered at 600, 800 and 1000 °C for 3 hours. The resulting samples were then characterized using Laser Flash Apparatus (LFA) for determining thermal diffusivity (α ) value. The measurements of α were carried out at room temperature up to 400 °C with the intervals of 50 °C. Experimental results showed that thermal diffusivity value is in the range of 5.0×10-7m2s-1 - 3.0×10-6m2s-1. We also show that larger grain size increases the thermal diffusivity of the ceramic. Data concerning the effects of additive amount, pore content, and temperature were also reported.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

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