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

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.

• Periodical: Advanced Materials Research (Volume 1107)
• Pages: 27-31
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1107.27
• Online since: June 2015
• Authors: M.M. Aiza, A.W. Zaidan, Mat Yunus Wan Mahmood, A.M. Khamirul
• Keywords: Grain Size, Pt-SnO₂, Sintering, Thermal Diffusivity

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