STRUCTURE AND PROPERTIES OF POLYAMIDE COATINGS FORMED USING INDUCTION HEATING
DOI:
https://doi.org/10.36773/1818-1112-2023-132-3-65-68Keywords:
polyamide, coating, morphology, wear, spectrum, powder, adhesion, heatingAbstract
The article studies the physical and mechanical characteristics of coatings formed from powders of polyamides PA 11, PA 6 obtained by cryogenic grinding of semi-finished products cooled to liquid nitrogen temperature. Polyamide coatings were created by two different technological methods from a fluidized state. The morphology of polyamide particles was studied using optical and scanning microscopy. The structure of polymer composite materials has been studied by IR spectroscopy, optical and atomic force microscopy, and X-ray diffraction analysis. The conducted studies have shown that induction heating of steel substrates makes it possible to provide higher adhesive characteristics of polyamide coatings. Structural changes in coatings have a significant impact on the tribotechnical characteristics of coatings. It has been established that an increase in the degree of crystallinity and molecular order in the amorphous phases of the polymer leads to an increase in the hardness and wear resistance of polyamide coatings.
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