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Indexed by:期刊论文

Date of Publication:2010-11-01

Journal:JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY

Included Journals:SCIE、ISTIC、Scopus

Volume:26

Issue:11

Page Number:967-972

ISSN No.:1005-0302

Key Words:Diamond like carbon films; Doping; Nitrogen flow rate; Arc ion plating

Abstract:In this paper, Me (Me=Cr, Zr) and N co-doped diamond like carbon (DLC-MeN) composite films were prepared on cemented carbide substrates by pulsed bias arc ion plating. The effect of nitrogen flow rates on the microstructure and properties of the films were investigated by X-ray photoelectron spectroscopy (XPS), Raman spectra, grazing incident X-ray diffraction (GIXRD), high resolution transmission electron microscopy (HRTEM) and nano-indentation. Raman, GIXRD and HRTEM results show that the deposited films are nanocomposite films with MeN nanocrystalline phase embedded within DLC amorphous matrix, which are vital for the mechanical properties of the films. The nitrogen flow rate has significant effect on the compositions and structures and hence on the hardness and elastic modulus of the films, and increasing nitrogen flow rate decreases drastically the hardness and elastic modulus of the films.