NDLI: Optical Detections From Worn and Unworn Titanium Compound Surfaces

Content Provider	Springer Nature Link
Author	Rasmussen, Inge L. Guibert, M. Martin, J. M. Belin, M. Mikkelsen, N. J. Pedersen, H. C. Schou, J.
Copyright Year	2009
Abstract	Wear-induced roughness in terms of grooves, sharp ridges, and edges leads to scattering of the reflected light and leads unavoidably to a reduction of the optical signals in a standard specular geometry. However, by using a double-layer system consisting of titanium aluminum nitride (TiAlN) on top of a titanium nitride (TiN) layer we obtain an increase in the reflected light as a result of wear. The relative change of reflectance of light from the tribological TiAlN coated surface to the underlying layer of TiN is similar for non-worn surfaces and for surfaces exposed to an abrasive wear process. The induced roughness reduces the signals from worn samples, in a standard specular geometry, by up to 30% compared with unworn samples. Our model system of TiAlN coatings on top of ‘optical’ signal layers of TiN deposited on a 100Cr6 steel substrate, was exposed to a reciprocating wear process with up to 10$^{5}$ repetitive cycles in a linear tribometer. The worn TiAlN layers of thicknesses up to 3 μm, with strongly developed grooves and ridges, were subsequently used for the reflectance measurements. The results show that optical reflectance monitoring is a potential technique for intelligent determination of a residual thickness of realistic tribological coatings prior to complete wear.
Starting Page	15
Ending Page	21
Page Count	7
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	37
Issue Number	1
e-ISSN	15732711
Language	English
Publisher	Springer US
Publisher Date	2009-07-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Coatings wear-resistant Aluminum Titanium Nitrides Abrasive wear Monitoring Optics Dynamic light scattering Nanotechnology Physical Chemistry Theoretical and Applied Mechanics Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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