AVS 47th International Symposium
    Thin Films Tuesday Sessions
       Session TF-TuP

Paper TF-TuP27
Mechanical and Structural Characteristics of Nanocrystalline Diamond (NCD) and Diamond-like Carbon (DLC) Coatings

Tuesday, October 3, 2000, 5:30 pm, Room Exhibit Hall C & D

Session: Poster Session
Presenter: P. Jedrzejowski, Ecole Polytechnique de Montreal, Canada
Authors: P. Jedrzejowski, Ecole Polytechnique de Montreal, Canada
J. Grabarczyk, Technical University of Lodz, Poland
P. Niedzielski, Technical University of Lodz, Poland
S. Mitura, Technical University of Lodz, Poland
J.E. Klemberg-Sapieha, Ecole Polytechnique de Montreal, Canada
L. Martinu, Ecole Polytechnique de Montreal, Canada
Correspondent: Click to Email
NCD and DLC films are increasingly attractive for the applications such as biocompatible coatings for metallic implants, anticorrosive protection or metallurgical coatings for tools. In the present work we fabricated NCD films by plasma enhanced chemical vapour deposition (PECVD) from methane using a novel high amplitude radiofrequency system. The film microstructure and mechanical properties were evaluated using Raman spectroscopy, elastic recoil detection, AFM, SEM, indentation and microscratch testing. We evaluated the effect of the structured intermediate carbide layer (interphase) on the film performance on substrates for medical applications such as AISI 316L steel, Vitalium and Titanium alloys. Breakdown voltage measured on samples exposed to Tyrod's solution was chosen as an appropriate technique to determine the coatings performance in simulated body environment. The NCD films are compared with standard DLC coatings.