Study of Delamination of Thin Film Coating on Cyclic Nano-Indentation Test

Abstract:

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The aim of this paper is to evaluate the cyclic interfacial strength between thin film and its substrate by cyclic nano-indentation tests. The specimen used in this study is PET substrate/ITO coatings layered specimen. From the indentation load and displacement curve, we proposed an evaluation method for the interfacial strength. The results are good agreement with the interfacial strength evaluated by peel test. After cyclic indentations, the surface profile was observed by atomic force microscope. The number of elongates increased with indentation cycles when the indentation load is low, whereas elongates number is almost constant under high load cases. These phenomena can be explained by simple models. In this study, two types of fracture modes are proposed. They are “subsidiary fracture mode” and “buckling mode”.

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie

Pages:

1842-1845

DOI:

10.4028/www.scientific.net/KEM.353-358.1842

Citation:

K. Kozuki et al., "Study of Delamination of Thin Film Coating on Cyclic Nano-Indentation Test", Key Engineering Materials, Vols. 353-358, pp. 1842-1845, 2007

Online since:

September 2007

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Price:

$35.00

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