Thermisch gespritzte Beschichtungen mit Hochleistungspolymeren

The flame spraying process has been optimized for the production of anti-corrosion coatings on metals like steel. PPS and PEEK powders were used for this process, and the parameters for manufacturing dense, non-cracked and adherent coating films have been determined, including preheating of the substrate and flame-spraying of a NiAl primer layer. DSC and IR analyses indicate that the chemical structure of both polymers is only marginal changed by the flame spraying process. Problems of this process are concerned, such as the agglomeration of the PPS powder leading to clogged dies, and the unsuitability of the high-speed flame spraying, which results in low-quality coatings.SIGLEAvailable from TIB Hannover: F04B836 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekArbeitsgemeinschaft Industrieller Forschungsvereinigungen 'Otto von Guericke' e.V. (AIF), Koeln (Germany)DEGerman