| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10408930 | Optics and Lasers in Engineering | 2005 | 14 Pages |
Abstract
The optical properties-reflectivity, real part of the refractive index, absorption coefficient as well as the thermal and electrical conductivity of AlSi-alloy/SiCp composite were measured. The optical parameters and both conductivities decreased with the increase of SiCp particles volume in AlSi-alloy matrix. This decrease was almost linear for the volume fraction of SiCp particle up to 10Â vol% of the total mass of the composite. For the 15Â vol% of SiCp particles, the departure from linearity is connected with the presence of additional phases in AlSi-alloy/SiCp composite materials. The measured temperature dependencies of optical reflectivity and electrical conductivity for AlSi-alloy/SiCp 15Â vol% are of metallic character. Modelling of the interaction of the CO2 laser radiation with AlSi-alloy/SiCp 15Â vol% composite should allow to estimate the initiation time at which the surface composite reaches melting temperature.
Keywords
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Electrical and Electronic Engineering
Authors
A. Grabowski, M. Nowak, J. Åleziona,