In this study, polyamide 11 and polyamide-alumina layers are produced by flame spraying and assessed based on microstructure and corrosion and wear resistance. Among the more notable findings: During the spraying process, there is a loss of crystallinity and polymorphism in the polymer due to high heating and cooling rates. Although some particle degradation occurs in flight, it is does not significantly alter the properties of the polymer. Insufficient substrate temperature impedes the melting of the polymer matrix and embedding of the ceramic filler particles, which has a negative effect on the abrasive wear resistance of the resulting composite layer. Overall, the coatings exhibit good corrosion resistance. During electrochemical testing in a saline solution, there was no electrolyte penetration. Paper includes a German-language abstract.

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