Metallurgical and Materials Transactions B

, Volume 37, Issue 4, pp 513–518 | Cite as

Thermal diffusivity of sintered stainless steel-alumina composites

  • R. Abdul Abas
  • S. Seetharaman
Article
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Abstract

Thermal diffusivity measurements were carried out as a function of temperature on sintered AISI 304 stainless steel-alumina composites having various compositions (0.001, 0.01, 0, 1, 1, 2, 3, 5, 7, 8, and 10 wt pct Al2O3). The measurements were carried out between room temperature and 1473 K. The thermal diffusivity and the thermal conductivity were found to increase with temperature in all the composite specimens. The thermal diffusivity was found to decrease with increasing weight fraction of alumina. This tendency can clearly be seen at temperatures above 755 K. The experimental results are in good agreement with the simple rule of mixture, the Eucken equation, and the Ohm’s law model developed by Hayashi et al. at weight fractions of alumina below 5 wt pct. Beyond this composition, the thermal diffusivity/conductivity shows a large discrepancy from the models. This could probably be attributed to the accumulation of alumina particles during cooled pressing and sintering.

Keywords

Thermal Conductivity Material Transaction Thermal Diffusivity Alumina Content Alumina Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 2006

Authors and Affiliations

  • R. Abdul Abas
    • 1
  • S. Seetharaman
    • 1
  1. 1.the School of Industrial Engineering and Management, Department of Materials Science and EngineeringRoyal Institute of TechnologyStockholmSweden

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