Abstract
Thermal spraying using a composite filament is a new method that allows the deposition of fine and ultrafine powders as is already possible in the case of a suspension thermal spraying.
The polymer matrix has the only purpose of transporting and keeping dispersed the metal powders, in fact once it enters the combustion zone it is necessary for it to totally decompose releasing NiCr in this case.
First, the possibility of depositing NiCr starting from the composite filament was evaluated and then its characteristics were evaluated. Subsequently, since suspension often presents complications especially related to preparation and instability over time, deposition from filament was then investigated to overcome these problems, which is proposed as a substitute or complementary methodology to suspension thermal spraying.
In the final part, the possibility of using the NiCr coating obtained from the composite filament as a heating device resistor is briefly evaluated through analysis using a thermal imaging camera.
|