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Hardness and Nitrogen Bonding Structure of A(x)Ti(1-x)N/CrN Multilayer Hard Coating

Seo, Jong-Hyun and Yoon, Sang-Won and Chae, Keun-Hwa and Park, Jong-Keuk and Song, Jong-Han and Lee, Kon-Bae and Jayaram, Vickram and Seong, Tae-Yeon and Kwon, Hoon and Ahn, Jae-Pyoung (2012) Hardness and Nitrogen Bonding Structure of A(x)Ti(1-x)N/CrN Multilayer Hard Coating. In: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 12 (2). pp. 1581-1584.

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Official URL: http://dx.doi.org/10.1166/jnn.2012.4700


AlxTi1-xN/CrN multilayer coatings were fabricated by magnetron sputtering and those hardness variations were studied by observing the crack propagation and measuring the chemical bonding state of nitrides by Ti addition. While AlN/CrN multilayer shown stair-like crack propagation, AlxTi1-xN/CrN multilayer illustrated straight crack propagation. Most interestingly, Ti addition induced more broken nitrogen bonds in the nitride multilayers, leading to the reduction of hardness. However, the hardness of Al0.25Ti0.75N/CrN multilayer, having high Ti contents, increased by the formation of many Ti-N bond again instead of Al-N bond. From these results, we found that linear crack propagation behavior was dominated by broken nitrogen bonds in the AlxT1-xN/CrN multilayer coatings.

Item Type: Journal Article
Additional Information: Copyright of this article is belongs to American Scientific Publishers.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 21 Jul 2012 10:42
Last Modified: 23 Jul 2012 09:48
URI: http://eprints.iisc.ac.in/id/eprint/44616

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