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Presently, biopolymers are establishing themselves in the world of fibre market. Some of these polymers are based on polymerised acid molecules. Such polymers can degrade under certain conditions. Consequently, the polymers split up into the original acid molecules. In addition to the tribological load of the machine parts, this can lead to corrosion. Hence, this is tribocorrosive load. Within this thesis a method to investigate tribocorrosive wear in textile tribosystems is developed and applied. The method is based on the fundamental theory of tribology and corrosion. In particular, the investigation of the corrosive and tribocrorrosive wear behaviour is of special importance. In order to analyse the corrosive wear, two kinds of tests were applied: exposure under specified conditions (climate and/or corrosive fluid) and potentiostat test to analyse velocity and affinity of the material to corrode in a specific electrolyte. To investigate the tribocorrosive behaviour a new testing facility has been developed: the Tribokorrometer. This device combines tribological with corrosive load. The yarn to-be-tested is coated with a defined amount of a corrosive fluid before passing the apparatus. The new testing facility hence enables a specific variation of tribological and corrosive load parameters. To verify the method, different types of coatings such as diamond like carbon (DLC), chrome and titanium-nitride (TiN) were investigated. In particular, the investigated DLC coating showed great potential for knitting and felting needles. Because of the high harness and the closed structure of the coating, it showed the best protection against tribocorrosive wear. Within the conventional, commercialised coatings (chrome and TiN) TiN showed disadvantages in the protection of tribocorrosive wear. Because of the micro porous structure, the layer cannot protect the steel needle from the acid. The method that was developed, successfully applied as well as measures for process improvement were deduced. These showed technological and economical advantages compared to the state-of-the-art. In particular, the DLC coating showed great potential compared to commercialized coatings. The method can also be used for other applications and problems such as the investigation and evaluation of the tribological, corrosive and tribocorrosive wear behaviour of other machine parts.