فهرست نشریات علمی دسترسی آزاد ایران

In the present study, Nano-crystalline Diamond (NDs) coatings were deposited on nickel substrates by a DC-plasma enhanced chemical vapor deposition (DC-PECVD) deposition technique using methane/hydrogen (CH4/H2) gas mixtures. Due to the extremely high surface energy of diamond, the nucleation and growth of diamond phase on non-diamond substrate is difficult. In order to improve the diamond nucleation density to form continuous films, a good pretreatment using suitable etching gas and magnetic field (MF) were used. The effects of MF pre-treatment on the characteristics of deposited coatings are discussed in view of experimental studies using analytical techniques such as Raman spectroscopy, X-ray diffraction pattern (XRD) and field-emission scanning electron microscopy (SEM). It was found that the quality of the diamond films grown with MF pre-treatment much higher than the film grown without MF pre-treatment process. The research indicates that the new technology of diamond growth using MF may have incredible effect on CVD diamond production at low temperature and few hours.