| AVS 63rd International Symposium & Exhibition | |
| Advanced Surface Engineering | Tuesday Sessions |
| Session SE+NS+TF+TR-TuM |
| Session: | Nanostructured Thin Films and Coatings |
| Presenter: | Roel Tietema, IHI Hauzer Techno Coating B.V., Netherlands |
| Authors: | R. Tietema, IHI Hauzer Techno Coating B.V., Netherlands D. Doerwald, Hauzer, Netherlands R. Jacobs, Hauzer G. Negrea, Hauzer I. Kolev, Hauzer J. Zhu, Hauzer J. Landsbergen, Hauzer |
| Correspondent: | Click to Email |
Nanostructured and amorphous coatings play an important role in today’s industrial applications. This is the case both in applications for cutting tools, as well as in applications for components.
In cutting tools nanostructured coatings with high hardness, including hot hardness, and ductility have been extremely helpful to increase the productivity of the machining process. On one hand superlattice multilayers have shown here great benefits and on the other hand nanocrystallites in the material have been created to give the coating materials an inherent high hardness and ductility.
In automotive coatings these material properties were leading to technological breakthroughs as well. First coatings on the market were nanostructured WC-C:H sputtered coatings, developed by Prof. Dimiggen of Fraunhofer IST. These developments were soon followed by hybrid a-C:H coatings, combining the WC-C:H developments with a multilayered structure to achieve a gradual adaptation of the Young’s modulus of the relatively soft steel as base material to the very hard a-C:H-DLC top layer. In this way it has been possible to produce coatings with a very high ductility, despite the high hardness. Hardness values as applied today on components are ranging from 2000-2500 HV for a-C:H coatings up to 4000-7000 HV for ta-C coatings.
The importance of petreatment and post treatment steps for cutting tools and components, being as important as the actual coating step, will be addressed in this talk.
The main focus in this talk will be on the equipment aspects. Several technologies for cutting tools and for components will be presented. The equipment design and even the selection of most suitable process technology is however also strongly determined by the productivity. Besides technological properties of the coating there is a focus on the cost reduction of the coating per coated part. Cost reduction is main driver in many fields, especially in the field of components. Reduction of the cost of ownership leads to a tendency to use fast processes in large systems, respectively application of in-line systems.