NDLI: Mechanical properties of boron-carbon-nitrogen coatings obtained by ion beam assisted evaporation

Content Provider	IEEE Xplore Digital Library
Author	Gago, R. Jimenez, I. Albella, J.M.
Copyright Year	2000
Description	Author affiliation: Inst. de Ciencia de Mater., CSIC, Madrid, Spain (Gago, R.)
Abstract	Boron-carbon-nitride films, including amorphous carbon (a-C), carbon nitride (CN/sub x/) and ternary compounds (BC/sub x/N/sub y/), were deposited on silicon substrates by ion beam assisted deposition (IBAD) techniques. The films were deposited by evaporating either graphite or boron carbide (B/sub 4/C) targets, with simultaneous ion bombardment from a precursor N/sub 2/+CH/sub 4/+Ar gas mixture. IBAD has permitted to cover a wide range of compositions as a function of deposition parameters. The composition and bonding structure of the films have been carefully studied, including analysis with powerful characterisation techniques such as time of flight elastic recoil detection analysis (TOF-ERDA) and X-ray absorption near-edge spectroscopy (XANES). Depending on the growth conditions, the ternary films can form true ternary compounds of segregated grains of three different phases: tetrahedral BN and C, hexagonal BN and C, and icosahedral B/sub 12/-structures. Mechanical characterisation of the films has been also performed, including measurements of hardness, elastic modulus, and friction coefficients. The optimal values encountered are hardness of /spl sim/35 GPa, and friction coefficients of /spl sim/0.05. The deposition parameters have been related to the composition bonding structure, and mechanical properties of the coatings.
Starting Page	189
Ending Page	192
File Size	314915
Page Count	4
File Format	PDF
ISBN	0780358856
DOI	10.1109/SMICND.2000.890215
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-10-10
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mechanical factors Coatings Carbon compounds Bonding Friction Semiconductor films Amorphous materials Silicon Ion beams Boron
Content Type	Text
Resource Type	Article

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