New Coatings Systems with Improved Mechanical Properties by Combining Polymer Derived Ceramic and Physical Vapor Deposition Coating Methods. Issue 34 (18th October 2022)

• Record Type: Journal Article
• Authors: Wendel, Jan‐Felix; Lenz Leite, Mateus; Furtat, Plinio; Tangermann‐Gerk, Katja; Schafföner, Stefan; Motz, Günter
• Is Part Of: Advanced materials interfaces. Volume 9:Issue 34(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-18
• Subjects: mechanical properties -- physical vapor deposition -- polymer derived ceramic coatings -- preceramic polymers -- scratch resistance -- titanium nitride; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.202201654
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: Different application methods for coatings have their individual advantages and disadvantages. Physical vapor deposition (PVD) titanium nitride coatings are hard but cannot be produced economically in high coating thicknesses, for example. Polymer derived ceramic (PDC) coatings, on the other hand, have good oxidation protection properties and can be easily produced with high thicknesses, but have worse mechanical properties. Therefore, a combination of different coating methods leads to a coating system providing the advantageous of both techniques. In this work, research on the combinability of a Durazane 2250 and a Durazane 1800 based PDC coating with a titanium nitride PVD coating is reported with focus on the mechanical properties of the combined system. It is shown that after complete ceramization of PDC coatings, a homogeneous and well adherent titanium nitride coating is achieved. The hardness (12.3 GPa) and scratch resistance (more than 10 N load at failure) as well as a reduction of affected area in cross‐cut tape test of 32% of the combined systems are obtained. The synergistic effect expected for the combined coating systems is demonstrated. Abstract : The present study demonstrates how the advantages of polymer‐derived ceramic coatings, such as thickness and adhesion, have been successfully combined with those of thin but very hard titanium nitride coatings produced by physical vapor deposition. The gradual transition in hardness from the steel substrate to the titanium nitride layer leads to a significant improvement in the mechanical properties.