CVD-Diamantbeschichtung von Stahl. Teilprojekt: Zerspanungsverhalten diamantbeschichteter HSS-Werkzeuge bei der Bearbeitung von Weichmetallen, Verbundwerkstoffen und Glas Abschlussbericht

In order to enable diamond deposition onto steel, interlayers have been deposited and investigated. These interlayers have been developed on the base of multilayered systems and have proven to increase adhesion between the diamond film and the relatively soft substrate. Optimization was performed by taking into account the following points: - necessary thickness, gradient of layer hardnesses, sufficient toughness - minimization of carbon- and iron-interdiffusion - promotion of diamond nucleation - matching of thermal expansion coefficients. Diamond coatings have been tested under laboratory conditions, and the critical parameters necessary to perform quality assurance have been evaluated - comparative lab testing of diamond layers - evaluation of test procedures - characterization of structure, composition and adhesion. Finally, diamond-coated tools have been tested by machining of numerous materials. Functionality and lifetime have been assesed, tool wear and quality of the treated surface investigated. (orig.)Available from TIB Hannover: F98B249+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman