The influence of grain boundaries on heat transfer through polycrystalline alumina has been investigated between 20-500 deg C. The thermal conductivities of small-grained porous ceramics and large-grained dense ceramics have been measured using the laser-flash technique. Two methods have been developed to assess the average thermal resistance of a grain boundary.
Origin
Unknown
Journal Title
J Am Ceram Soc 86 1 2003 105-111
Sector
Refractories
Class
R 476