THERMAL CONDUCTIVITY MEASUREMENT OF THE AlN CERAMICS AT THE GRAIN SCALE USING THERMOREFLECTANCE TECHNIQUE

The thermal conductivity of AlN ceramics at the micron-scale, which eliminated the grain boundary phase, was measured by the thermoreflectance technique with periodic heating. Thermal conductivities ranged from 160 to 260 W/m.K and an average value of 201 W/m.K was obtained from a 22 micron2 area. T...

Full description

Saved in:
Bibliographic Details
Published in:Key engineering materials 2009-01, p.65-67
Main Authors: Lee, S-K, Yamada, I, Kume, S, Nakano, H, Watari, K
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermal conductivity of AlN ceramics at the micron-scale, which eliminated the grain boundary phase, was measured by the thermoreflectance technique with periodic heating. Thermal conductivities ranged from 160 to 260 W/m.K and an average value of 201 W/m.K was obtained from a 22 micron2 area. The variation in the thermal conductivities was related to the individual AlN grains and grain boundary characteristics.
ISSN:1013-9826
DOI:10.4028/3-908454-00-X.65