Article ID Journal Published Year Pages File Type
1658493 Surface and Coatings Technology 2012 8 Pages PDF
Abstract

Mechanical bonding and interface behaviour play a key role for any materials deposited on different substrates. Usually, a post-spray heat treatment is required to improve the coating morphology and to enhance mechanical properties of thermal-sprayed polymeric coating. The effects of YAG, CO2 and diode laser radiations on as-sprayed PEEK coating deposited on stainless steel and aluminum substrates were investigated. The results revealed a good coating densification and interface behavior. A correlation between coating and substrate absorption coefficients, their thermophysical properties and laser operating parameters was shown. Besides, the finite element modeling based on IR temperature measurements during diode laser irradiation demonstrated that the densification of organic coating occurs above its melting point.

► Polymer absorption coefficient is directly proportional to laser wavelengths. ► Decreasing laser wavelength from IR to Near IR provides a good PEEK densification. ► The densification of organic coating occurs above its melting point.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
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