Tribological and corrosion behavior of thermal-sprayed polymer-ceramic composite coatings

摘要

Over the last decade, the governments, in order to protect the environment, have increased the restrictions on products containing Volatile Organic Compounds. These products include the paints, which are usually used as protection of metallic structures. An alternative to these products are polymeric coatings obtained by thermal spray techniques. These coatings provide corrosion and chemical resistance, electrical insulation, lightness and non-stick properties [7]. However, some properties of these coatings are limited, like wear and scratch resistance. The presence of fillers in a polymeric matrix have a significant influence on it, usually increasing its mechanical properties [5]. In the Thermal Spray Centre of University of Barcelona, a new composite coating based on Polyamide 11 and Alumina mechanical blend have been developed. In this work, the abrasion wear resistance and corrosion resistance of polyamide 11 and polyamide 11 + Al{sub}2O{sub}3 coatings, flamesprayed, are compared.