Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/102985
Type: Artigo de periódico
Title: Influence Of Hydrogen On The Thermomechanical Properties Of A-cnx:h And A-cnx Films Deposited By Glow Discharge And Ion Beam Assisted Deposition
Author: Champi A.
Barbieri P.F.
Marques F.C.
Abstract: The coefficient of thermal expansion (CTE), Young's modulus, Poisson's ratio, stress and hardness of a-CNx and a-CNx:H were investigated as a function of nitrogen concentration. Hydrogenated films were prepared by glow discharge, GD, and unhydrogenated films were prepared by ion beam assisted deposition, IBAD. Using nanohardness measurements and the thermally induced bending technique, it was possible to extract separately, Young's modulus and Poisson's ratio. A strong influence of hydrogen, in a-CNx:H films, was observed on the CTE, which reaches about ∼9 × 10-6 C-1, close to that of graphite (∼8 × 10-6 C-1) for nitrogen concentration as low as 5 at.%. On the other hand, the CTE of unhydrogenated films increases with nitrogen concentration at a much lower rate, reaching 5.5 × 10-6 C-1 for 33 at.% nitrogen. © 2006 Elsevier B.V. All rights reserved.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/j.jnoncrysol.2006.02.005
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-33745472126&partnerID=40&md5=74678fb352d0a1e190a744603ac6bf5b
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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