Abstract
Abstract Over the last years, interest in thermally sprayed polymer coatings has increased. They have excellent corrosion and chemical resistance properties. Unfortunately, they have some limited properties like scratch and wear resistance. Fillers can be a good solution to improve these properties. In the Thermal Spray Centre of Barcelona, blends of polyamide powder with different contents of boron and silicon nitride have been flame-sprayed and studied. Microstructural characterisation of the composite coatings has been done using Optic and Scanning Electron Microscopies. Wear resistance has been evaluated by means of Ball on Disk (ASTM G99-90) and Rubber Wheel (ASTM G65-91) tests. Salt Spray Fog tests (ASTM B117-90) have been performed in order to evaluate their corrosion resistance.
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