@inproceedings{e9f262f35e7a4abf81d817a099b34ec3,
title = "Wear resistance of thick diamond like carbon coatings against polymeric materials used in single screw plasticizing technology",
abstract = "Wear on the screw and barrel surface accompany polymer single screw plasticizing technology from the beginning. In general, wear on screws can be reduced by using nitrided steel surfaces, fused armour alloys on the screw flights and coatings. However, DLC-coatings (Diamond Like Carbon) comprise a number of interesting properties such as a high hardneb, a low coefficient of friction and an excellent corrosion resistance due to their amorphous structure. The wear resistance of about 50μm thick DLC-coatings against polyamide 6.6, polybutylene terephthalate and polypropylene is investigated in this paper. The tribology in the solids conveying zone of a single screw extruder until the beginning of melting is evaluated using a pin on disc tribometer and a so called screw tribometer. The polymeric pins are prebed against coated metal samples using the pin on disc tribometer and the tests are carried out at a defined normal force and sliding velocity. The screw tribometer is used to perform tribological experiments between polymer pellets and rotating coated metal shafts simulating the extruder screw. Long term experiments were performed to evaluate the wear resistance of the DLC-coating. A reduction of the coefficient of friction can be observed after a frictional distance of about 20 kilometers using glab fibre reinforced polymeric materials. This reduction is independent on the polymer and accompanied by a black layer on the wear surface of the polymeric pins. The DLC-coated metal samples show an up to 16μm deep wear track after the 100 kilometer test period against the glab fiber filled materials only.",
keywords = "Diamond like carbon, Extrusion technology, Screw, Tribology",
author = "Gernot Zitzenbacher and Keyan Liu and Christian Forsich and Daniel Heim",
note = "Publisher Copyright: {\textcopyright} 2015 AIP Publishing LLC.; 30th International Conference of the Polymer Processing Society, PPS 2014 ; Conference date: 06-06-2014 Through 12-06-2014",
year = "2015",
month = may,
day = "22",
doi = "10.1063/1.4918468",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Jana, {Sadhan C.}",
booktitle = "Proceedings of PPS-30",
}