Structural and Mechanical Properties of CNX and CPX Thin Solid Films

E. Broitman; A. Furlan; Gueorgui K. Gueorguiev; Zsolt Czigány; H. Högberg; L. Hultman

doi:10.4028/www.scientific.net/KEM.488-489.581

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 488-489Structural and Mechanical Properties of CNX and...

Structural and Mechanical Properties of CN_Xand CP_XThin Solid Films

Abstract:

The inherent resiliency, hardness and relatively low friction coefficient of the fullerene-like (FL) allotrope of carbon nitride (CN_x) thin solid films give them potential in numerous tribological applications. In this work, we study the substitution of N with P to grow FL-CP_x to achieve better cross- and inter-linking of the graphene planes, improving thus the material’s mechanical and tribological properties. The CN_x and CP_x films have been synthesized by DC magnetron sputtering. HRTEM have shown the CP_x films exhibit a short range ordered structure with FL characteristics for substrate temperature of 300 °C and for a phosphorus content of 10-15 at.%. These films show better mechanical properties in terms of hardness and resiliency compared to those of the FL-CN_x films. The low water adsorption of the films is correlated to the theoretical prediction for low density of dangling bonds in both, CN_x and CP_x. First-principles calculations based on Density Functional Theory (DFT) were performed to provide additional insight on the structure and bonding in CN_x, CP_x, and a-C compounds.

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Periodical:

Key Engineering Materials (Volumes 488-489)

Pages:

581-584

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.488-489.581

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Online since:

September 2011

Authors:

E. Broitman, A. Furlan, Gueorgui K. Gueorguiev, Zsolt Czigány, H. Högberg, L. Hultman

Keywords:

Carbon Nitride, Fullerene-Like Coatings, Magnetron Sputtering, Phosphorous-Carbide, Thin Film

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