Journal
JOURNAL OF MATERIALS RESEARCH
Volume 36, Issue 11, Pages 2189-2197Publisher
SPRINGER HEIDELBERG
DOI: 10.1557/s43578-021-00119-3
Keywords
Nanoindentation; Hardness; Elastic properties
Categories
Ask authors/readers for more resources
Correcting for errors in contact area caused by surface tilt in nanoindentation is essential to avoid overestimation of hardness and elastic modulus. A geometric model and contour plots can be used to directly determine the area correction factor, showing efficacy in correcting for surface tilt-induced errors.
A correction is needed to minimize errors in contact area caused by surface tilt in nanoindentation. Surface tilt decreases the contact area calculated using standard analyses that assume the tested surface is not tilted and thus results in overestimation of hardness and elastic modulus. Both the direction of tilt with respect to the pyramid face and the angle of the pyramidal probe are important when characterizing error caused by surface tilt. Here, a geometric model was used to create contour plots from which the area correction factor can be directly determined using only the ratios of side lengths measured from an image of the triangular nanoindentation impression. Contour plots for Berkovich, cube corner, and two nonstandard pyramidal probe geometries are given. The efficacy of the method was demonstrated in the correction of Berkovich nanoindentation on facets in freshly prepared poly(methyl methacrylate) with surface tilts as high as 6 degrees. Graphic
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available