Abstract
Instrumented Indentation Technique (IIT) or nanoindentation is widely used to measure mechanical properties on nano to macro scales. Due to the simple testing procedure and the continuously increasing sensor sensitivity there exists practically no limitation on application scale and specimen size. One of the most important sources of error in IIT test is the inevitable roughness of the tested surface. The nanoindentation test is more sensitive for the roughness of the sample as the conventional hardness test because of its shallower penetration in the sample, especially in the case of thin films' characterization, when the indentation depth is limited by the film thickness. The question, what an effect the roughness on the value of hardness has, was not studied in detail yet. In this study we applied specially roughened samples in tests, carried out with different indenter tips and by various instruments to determine experimentally the effect of roughness. Other parameters (as indenter rounding and shape, penetration depth, wavelength of the roughness) do have some effect on test results. The initial theoretical findings were confirmed by a considerable accuracy in the experiments. Copyright © 2013 American Scientific Publishers. All rights reserved.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
