The effects of nitrogen bonding on hardness of AlN/CrN multilayer hard coatings

Title
The effects of nitrogen bonding on hardness of AlN/CrN multilayer hard coatings
Authors
윤상원서종현채근화박종극송종한Vickram Jayaram이건배성태연권훈안재평
Keywords
AlN/CrN; NEXAFS; Multilayer Hard coating; Bilayer thickness; Broken nitrogen bond
Issue Date
2012-02
Publisher
Journal of nanoscience and nanotechnology
Citation
VOL 12, NO 2, 1476-1479
Abstract
AlN/CrN multilayer hard coatings with various bilayer thicknesses were fabricated by a reactive sputtering process. The microstructural and mechanical characterizations of multilayer coatings were investigated through transmission electron microscope (TEM) observations and the hardness measurements by nano indentation. In particular, the variation of chemical bonding states of the bilayer nitrides was elucidated by near edge X-ray absorption fine structure (NEXAFS) spectroscopy. Many broken nitrogen bonds were formed by decreasing the bilayer thickness of AlN/CrN multilayer coatings. Existence of optimum AlN/CrN multilayer coatings thickness for maximum hardness could be explained by the competition of softening by the formation of broken nitrogen bonds and strengthening induced by decreasing bilayer thickness.
URI
http://pubs.kist.re.kr/handle/201004/44261
ISSN
15334880
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE