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Elastic Recovery Measurements Performed by Atomic Force Microscopy and Standard Nanoindentation on a Co(10.1) Monocrystal

Published online by Cambridge University Press:  31 January 2011

J. C. Arnault*
Affiliation:
Groupe Surfaces-Interfaces, Institut de Physique et Chimie de Strasbourg, IPCMS-GSI, UMR 7504, Bat 69, 23, rue du Loess, 67037 STRASBOURG France
A. Mosser
Affiliation:
Groupe Surfaces-Interfaces, Institut de Physique et Chimie de Strasbourg, IPCMS-GSI, UMR 7504, Bat 69, 23, rue du Loess, 67037 STRASBOURG France
M. Zamfirescu
Affiliation:
LASMEA-UMR 6602 du CNRS, Avenue des Landais, 63177 AUBIERE Cedex, France
H. Pelletier
Affiliation:
Laboratoire d'Ingénierie des Surfaces de Strasbourg, ENSAIS, 24, bld de la Victoire, 67084 Strasbourg Cedex, France
*
a)Address all correspondence to this author. e-mail: Jean-CharlesArnault@ipcms.u-strasbg.fr
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Abstract

Atomic force microscopy (AFM) nanoindentation experiments were performed on a Co(10.1) monocrystal. Using AFM line scans, we deduced the elastic recovery, which is an intrinsic parameter of the studied material. The comparison of these elastic recovery values with those calculated by standard nanoindentation shows a fair agreement for forces higher than 400 μN with an important discrepancy for lower forces. This difference is attributed to tip shape effects and to the AFM cantilever elastic deformation. Furthermore, the material hardness was measured from AFM images of the imprint by considering the lateral dimension L. In this case, the obtained values are practically independent from the applied load. Moreover, a simple model based on geometrical considerations is proposed to correct hardness values calculated from the residual depth.

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Articles
Copyright
Copyright © Materials Research Society 2002

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