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Proceedings Paper

Mechanical behavior and limits to the microhardness testing of hard multilayer coatings on soft substrates
Author(s): Ilze Manika; Faina Muktepavela; Gunnar Sorensen
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Paper Abstract

Multilayer coatings of (Ti, Al) Nx, (Ti, C)Nx and (Nb, C)Nx with bilayer thickness of 0.8 - 8 nm have been deposited by reactive sputtering on stainless steel substrates. Vickers microhardness measurements in the load range of 3.10-3 to 1 N were performed using a self- adjusting tester. It has been shown that in order to obtain the true hardness of multilayer coatings on a softer substrate, the indentation depth should not exceed about 10% of the coating thickness. Indentation criteria for polycrystalline, amorphous and nanostructured multilayer coatings are compared. The obtained criterion for multilayer coatings is close to that for amorphous films.

Paper Details

Date Published: 25 January 2000
PDF: 4 pages
Proc. SPIE 4064, Third International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (25 January 2000); doi: 10.1117/12.375454
Show Author Affiliations
Ilze Manika, Univ. of Latvia (Latvia)
Faina Muktepavela, Univ. of Latvia (Latvia)
Gunnar Sorensen, Univ. of Aarhus (Denmark)


Published in SPIE Proceedings Vol. 4064:
Third International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering
Alexander I. Melker, Editor(s)

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