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Structure-property correlations in cathodic arc deposited tialn coatings
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2012 (English)In: Materials Science Forum, ISSN 0255-5476, E-ISSN 1662-9752, Vol. 702-703, no 1, 967-970 p.Article in journal (Refereed) Published
Abstract [en]

PVD hard coatings, notably transition metal nitrides and carbides, are being increasingly used by industry for improving the life and machining speeds of cutting and forming tools. There has been an increasing trend towards use of complex coatings, based on ternary and even more complex multi-component systems, as well as in novel configurations such as multilayers, superlattices, nanolayers and graded coatings, to achieve superior properties in the tool as well as the finished product. The service properties of the coatings are known to be influenced by their microstructure, phase assembly and composition, apart from the orientation and stress states which can be suitably tailored for diverse applications. In the present study, a ternary coating based on Titanium Aluminum Nitride was deposited on high speed steel substrates by cathodic arc evaporation under varied bias voltage conditions. Asdeposited coatings were characterized by X-ray diffraction, Residual Stress Analysis, Scanning Electron Microscopy (SEM), EBSD and FIB. Mechanical and tribological characteristics of the coatings were evaluated by nanoindentation and nanoscratch testing, respectively. The variations in coating hardness and adhesion with the bias voltage were studied. The changes in coating microstructure as a consequence of variation in bias voltage were also examined. Results from the above investigations are presented to illustrate how a combination of electron microscopy with nanoindentation. © (2012) Trans Tech Publications, Switzerland.

Place, publisher, year, edition, pages
2012. Vol. 702-703, no 1, 967-970 p.
Keyword [en]
Bias voltage, Cathodic arc deposition, Characterization, Nanoindentation, TiAlN, Cathodic arc, Cathodic arc evaporation, Coating hardness, Coating microstructures, Cutting and forming, Diverse applications, Finished products, Graded coating, High speed steel substrate, Machining speed, Multi-component systems, Nano layers, Nano-scratch, Phase assemblies, PVD hard coatings, Service properties, Stress state, Structure-property correlation, Ternary coatings, TiAlN coatings, Titanium aluminum nitride, Transition metal nitrides, Tribological characteristics, Voltage conditions, Adhesion, Aluminum nitride, Carbides, Cutting tools, Hard coatings, Metal cutting, Scanning electron microscopy, Stress analysis, Textures, Titanium, Titanium nitride, X ray diffraction, X ray diffraction analysis, Aluminum coatings
National Category
Materials Engineering
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-8485Libris ID: 14770186ISBN: 02555476 (ISSN); 9783037852941 (ISBN) (print)OAI: oai:DiVA.org:hv-8485DiVA: diva2:860168
Conference
16th International Conference on Textures of Materials, ICOTOM 16; Mumbai; India; 12 December 2011 through 17 December 2011; Code 87954
Available from: 2015-10-10 Created: 2015-10-08 Last updated: 2017-12-01Bibliographically approved

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Joshi, Shrikant V.

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