Abstract
Measuring the toughness of brittle coatings has always been a difficult task. Coatings are often too thin to easily prepare a freestanding sample of a defined geometry to use standard toughness measuring techniques. Using standard indentation techniques gives results influenced by the effect of the substrate. A new technique for measuring the toughness of coatings is described here. A precracked micro-beam was produced using focused ion beam (FIB) machining, then imaged and loaded to fracture using a nanoindenter.
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06 March 2017
An Erratum to this paper has been published: https://doi.org/10.1557/jmr.2017.84
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Di Maio, D., Roberts, S.G. Measuring fracture toughness of coatings using focused-ion-beam-machined microbeams. Journal of Materials Research 20, 299–302 (2005). https://doi.org/10.1557/JMR.2005.0048
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DOI: https://doi.org/10.1557/JMR.2005.0048