Hardness and nitrogen bonding structure of Al xTi 1-xN/CrN multilayer hard coating

Jong Hyun Seo; Sang Won Yoon; Keun Hwa Chae; Jong Keuk Park; Jong Han Song; Vickram Jayaram; Kon Bae Lee; Tae Yeon Seong; Hoon Kwon; Jae Pyoung Ahn

doi:10.1166/jnn.2012.4700

Hardness and nitrogen bonding structure of Al _xTi _1-xN/CrN multilayer hard coating

Jong Hyun Seo, Sang Won Yoon, Keun Hwa Chae, Jong Keuk Park, Jong Han Song, Vickram Jayaram, Kon Bae Lee, Tae Yeon Seong, Hoon Kwon, Jae Pyoung Ahn

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Al _xTi _1-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, Al _xTi _1-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 Al _0.25Ti _0.75N/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 Al _xTi _1-xN/CrN multilayer coatings.

Original language	English
Pages (from-to)	1581-1584
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	12
Issue number	2
DOIs	https://doi.org/10.1166/jnn.2012.4700
Publication status	Published - 2012

Keywords

AlN/CrN
AlTiN/CrN
Broken nitrogen bond
Crack propagation
Multilayer hard coating

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Biomedical Engineering
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1166/jnn.2012.4700

Cite this

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title = "Hardness and nitrogen bonding structure of Al xTi 1-xN/CrN multilayer hard coating",

abstract = "Al xTi 1-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, Al xTi 1-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 Al 0.25Ti 0.75N/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 Al xTi 1-xN/CrN multilayer coatings.",

keywords = "AlN/CrN, AlTiN/CrN, Broken nitrogen bond, Crack propagation, Multilayer hard coating",

author = "Seo, {Jong Hyun} and Yoon, {Sang Won} and Chae, {Keun Hwa} and Park, {Jong Keuk} and Song, {Jong Han} and Vickram Jayaram and Lee, {Kon Bae} and Seong, {Tae Yeon} and Hoon Kwon and Ahn, {Jae Pyoung}",

year = "2012",

doi = "10.1166/jnn.2012.4700",

language = "English",

volume = "12",

pages = "1581--1584",

journal = "Journal of Nanoscience and Nanotechnology",

issn = "1533-4880",

publisher = "American Scientific Publishers",

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T1 - Hardness and nitrogen bonding structure of Al xTi 1-xN/CrN multilayer hard coating

AU - Seo, Jong Hyun

AU - Yoon, Sang Won

AU - Chae, Keun Hwa

AU - Park, Jong Keuk

AU - Song, Jong Han

AU - Jayaram, Vickram

AU - Lee, Kon Bae

AU - Seong, Tae Yeon

AU - Kwon, Hoon

AU - Ahn, Jae Pyoung

PY - 2012

Y1 - 2012

N2 - Al xTi 1-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, Al xTi 1-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 Al 0.25Ti 0.75N/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 Al xTi 1-xN/CrN multilayer coatings.

AB - Al xTi 1-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, Al xTi 1-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 Al 0.25Ti 0.75N/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 Al xTi 1-xN/CrN multilayer coatings.

KW - AlN/CrN

KW - AlTiN/CrN

KW - Broken nitrogen bond

KW - Crack propagation

KW - Multilayer hard coating

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