Advantages of Nanoimpact Fracture Testing in Studying the Mechanical Behavior of CrAl(Si)N Coatings

Authors: Mosquera, A.; Mera, L.; Fox-Rabinovich, G.S.; Martínez, R.; Azkona, I.; Endrino, J.L.

Source: Nanoscience and Nanotechnology Letters, Volume 2, Number 4, December 2010 , pp. 352-356(5)

Publisher: American Scientific Publishers

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Abstract:

Characterization studies involving the fracture behavior of coatings can play an important role in the mechanical analysis of coatings employed in machining applications. In this study, glow discharge optical emission spectroscopy was used to determine the profile composition of various single layer CrAl(Si)N coatings. Nanoimpact tests using a cube corner indenter were compared against standard nanoindentation tests in order to characterize the fracture behavior of the coatings. Micromechanical properties like ductile fracture, brittle fracture, micro hardness, elastic modulus and micro hardness dissipation parameter (MDP) were measured showing that silicon addition in the coatings results in a decrease in ductility.

Keywords: NANOIMPACT; NANOINDENTATION; CRALSIN; MACHINING; CATHODIC ARC EVAPORATION

Document Type: Short communication

DOI: http://dx.doi.org/10.1166/nnl.2010.1108

Publication date: 2010-12-01

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Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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