Polycrystalline Columnar Diamond Film Deposited on Spherical Substrate by DC Arc Plasma CVD


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Diamond film was deposited on spherical molybdenum substrate by DC arc plasma CVD method. Diamond film morphology, purities and orientation evolution, obtained from atomic force microscopy, scanning electron microscopy, Raman spectroscopy, X ray diffraction respectively, has showed that grains on the growth surface are compact, continuous and uniform. Characteristic diamond (111), (220), (311) peaks were found and (111) facets were predominant. It revealed that diamond film was polycrystalline texture characteristic. There is a typical diamond Raman spectrum peaks at 1332.0 cm-1, and not graphite and amorphous carbon characteristic peak. High purity diamond film was deposited. When methane concentration was increased, diamond film has more local clusters and vacancy defects such as voids, graphite inclusion, and hydrogen cluster. Therefore, some important parameters such as methane concentration and substrate temperature should be optimized in depositing diamond film.



Key Engineering Materials (Volumes 373-374)

Main Theme:

Edited by:

M.K. Lei, X.P. Zhu, K.W. Xu and B.S. Xu




D. S. Li et al., "Polycrystalline Columnar Diamond Film Deposited on Spherical Substrate by DC Arc Plasma CVD", Key Engineering Materials, Vols. 373-374, pp. 134-137, 2008

Online since:

March 2008




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