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Amorphous carbon nitride (CNx) coatings are now being developed for a range of applications, e.g. as a protective top layer for hard disks or as a coating to reduce the friction between synthetic joints in the human body. The purpose of this work is to assess the mechanical properties of the latest generation of fullerene-like CNx deposited on different substrates in order to expand the number of potential applications. Samples of CNx on four different substrates have been studied using quasistatic nanoindentation with a wide range of peak loads, from 500 μN to 500 mN and dynamic nanoindentation for peak loads from 100 |iN to up to 10 mN. Improved deposition techniques generate samples with extremely high values of hardness/Young's modulus; in some cases greater than 0.4 which is not achieved by any other hard material. Adhesion and fracture resistance are comparable to or better than that of traditional high hardness coatings, such as SiC and TiN, on similar substrates. The sample of CNx on titanium showed differences in hardness and Young's modulus at low loads, where the influence of the substrate is negligible, compared to coatings deposited on other substrates. This arises due to the fact that Ti from the substrate may have diffused into the coating in the deposition process creating a sort of C-N-Ti high hardness layer which would have some advantages of both the fullerene-like and traditional hard coating systems.

Titel:	Nanoindentation response of high performance fullerene-like CNx
Autor/in / Beteiligte Person:	PALACIO, J. F ; BULL, S. J ; NEIDHARDT, J ; HULTMAN, L
Link:	E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Zeitschrift:	Proceedings of the 32nd International Conference on Metallurgical Coatings and Thin Films, San Diego, California, May 2-6, 2005, Jg. 494 (2006), Heft 1-2, S. 63-68
Quelle:	Proceedings of the 32 n d International Conference on Metallurgical Coatings and Thin Films, San Diego, California, May 2-6, 2005Thin solid films 494(1-2):63-68; Jg. 494 (2006) 1-2, S. 63-68
Veröffentlichung:	Lausanne: Elsevier Science, 2006
Medientyp:	Konferenz
Umfang:	print, 24 ref
ISSN:	0040-6090 (print)
Schlagwort:	Crystallography Cristallographie cristallogenèse Electronics Electronique Metallurgy, welding Métallurgie, soudage Condensed state physics Physique de l'état condensé Sciences exactes et technologie Exact sciences and technology Physique Physics Etat condense: structure, proprietes mecaniques et thermiques Condensed matter: structure, mechanical and thermal properties Propriétés mécaniques et acoustiques de l'état condensé Mechanical and acoustical properties of condensed matter Propriétés mécaniques des nanostructures et des nanomatériaux Mechanical properties of nanoscale materials Domaines interdisciplinaires: science des materiaux; rheologie Cross-disciplinary physics: materials science; rheology Science des matériaux Materials science Méthodes de dépôt de films et de revêtements; croissance de films et épitaxie Methods of deposition of films and coatings; film growth and epitaxy Depôt par pulvérisation cathodique Deposition by sputtering Adhérence Adhesion Agrégat atomique Atomic clusters Carbone Molécule Carbon Molecules Carbone nitrure Carbon nitrides Couche mince Thin films Dureté Hardness Dépôt pulvérisation Sputter deposition Epreuve charge Loading test Prueba carga Etude expérimentale Experimental study Fracture Fractures Fullerènes Fullerenes Magnétron Magnetrons Matériau amorphe Amorphous material Material amorfo Microscopie force atomique Atomic force microscopy Microscopie électronique balayage Scanning electron microscopy Module Young Young modulus Méthode phase vapeur Growth from vapor Método fase vapor Nanoindentation Nanoindentacion Préparation Preparation Preparación Revêtement Coatings C N CNx Substrat Cr Substrat Si Substrat Ti Substrat acier Fullerene-like CNx H/E ratio
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Conference Paper File Description: text Language: English Author Affiliations: Chemical Engineering and Advanced Materials Department, University of Newcastle upon Tyne, United Kingdom ; Thin film Physics Division, Department of Physics, IFM, University of Linkdping, Sweden ; Christian Doppler Laboratory for Advanced Hard Coatings, University of Leoben, Austria Rights: Copyright 2006 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Physics and materials science ; Physics of condensed state: structure, mechanical and thermal properties

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Nanoindentation response of high performance fullerene-like CNx