Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5464476 | Surface and Coatings Technology | 2017 | 35 Pages |
Abstract
It was shown that a smaller carbide grain size influences the microstructure of the CrAlN coating and causes a finer crystalline structure. Furthermore, higher compressive residual stresses occur in the duplex interlayer and the top layer when using nanosized carbides. Moreover, nanosized carbides in the HVOF coating are favorable in terms of layer adhesion, which was analyzed by means of HRC indent test and scratch test. Further enhancements are the increase in hardness and the reduction in roughness which was directly influenced by the WC grain size. Considering the obtained results, it is to conclude that a reduction of the interlayer WC grain size improves the performance of CrAlN/WC-12Co duplex coatings.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Wolfgang Tillmann, Dominic Stangier, Leif Hagen, Philipp Schröder, Marius Krabiell,