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| Abstract |
The absorptivity for laser beam a, thermal conductivity lambdab and thermal diffusivity αb of the thin black paint layer sprayed on material surfaces are measured by applying a non-contact measurement... method of the thermophysical properties of solids. The values of a=0.67, λb=1.45W/mK and αb=1.24×10-6m2/s are obtained for the sprayed layer thickness ζb=40μm. Furthermore, for the ζb=24μm thick layers which are formed by rubbing with a glass rod after spraying, the values of α=0.73, λb=1.85W/mK and αb=1.09×10－6m2/s are obtained. It is also shown that the present thermal diffusivity αb for ζb=40μm is about 30～80% larger than those obtained by Araki et a1. for the thicker layers ζb=150～248μm.show more
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