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The influence of surface topography on the formation of build-up layers and wear of CVD-Al2O3 coatings
Dalarna University, School of Technology and Business Studies, Material Science.
Dalarna University, School of Technology and Business Studies, Material Science.
2009 (English)In: Wear of Materials, Las Vegas, 2009Conference paper, Published paper (Other academic) Published
Abstract [en]

During the last years it has become more and more obvious that the surface topography and surface texture strongly influences the performance of CVD and PVD coated cutting tools. As a result the interest for different types of pre- and post-surface treatments of the substrates and the deposited coatings has increased. In the present study the friction and wear characteristics of CVD a-Al2O3 coated cemented carbide exposed to different post-surface treatments, including grinding, wet and dry micro-blasting and polishing, have been investigated using modified scratch testing and pin-on-disc testing using , AISI 304 stainless steel, AISI A2 tool and steel reinforcing iron as counter materials. The influence of the coating surface topography/texture on the resulting friction characteristics, tendency to build up layer formation and prevailing wear mechanisms were identified by optical profilometry, FEG-SEM and EDX analysis. Based on the results obtained, the potential of pin-on-disc testing in the tribological characterisation of CVD coatings for cutting tool applications is discussed.

Place, publisher, year, edition, pages
Las Vegas, 2009.
Identifiers
URN: urn:nbn:se:du-4467OAI: oai:dalea.du.se:4467DiVA, id: diva2:522065
Conference
Wear of Materials , Las Vegas, 19-23 april, 2009
Available from: 2010-01-20 Created: 2010-01-20 Last updated: 2012-04-24Bibliographically approved

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CiteExportLink to record
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Citation style
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