Mechanical Properties of Ultrananocrystalline Thin Films Deposited Using Dual Frequency Discharges

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Authors

BURŠÍKOVÁ Vilma BLÁHOVÁ Olga KARÁSKOVÁ Monika ZAJÍČKOVÁ Lenka JAŠEK Ondřej FRANTA Daniel KLAPETEK Petr BURŠÍK Jiří

Year of publication 2011
Type Article in Periodical
Magazine / Source CHEMICKÉ LISTY
MU Faculty or unit

Faculty of Science

Citation
Web http://www.chemicke-listy.cz/docs/full/2011_14_s98-s101.pdf
Field Plasma physics
Keywords ultrananocrystalline diamond; plasma enhanced chemical vapor deposition; dual frequency discharge; local mechanical properties
Description The present paper describes the deposition of nanostruc- tured diamond films with low surface roughness, high hard- ness and fracture toughness by microwave PECVD in the ASTeX type reactor from mixture of methane and hydrogen. Films were deposited on a mirror polished (111) oriented n- doped silicon substrate. The film exhibited relatively low roughness, the root mean square (RMS) of heights ranged from 20 to 9.1 nm, depending on the deposition conditions. The hardness was found to be in the range from 22 to 65 GPa and the elastic modulus ranged from 220 to 375 GPa, depend- ing on the film structure
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