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Multi-step anodizing on Ti6Al4V components to improve tribomechanical performances.

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Title: Multi-step anodizing on Ti6Al4V components to improve tribomechanical performances.
Authors: Diamanti, M.V.1 mariavittoria.diamanti@polimi.it, Sebastiani, M.2, Mangione, V.2, Del Curto, B.1, Pedeferri, M.P.1, Bemporad, E.2, Cigada, A.1, Carassiti, F.2
Source: Surface & Coatings Technology. Jul2013, Vol. 227, p19-27. 9p.
Subjects: Titanium-aluminum-vanadium alloys, Anodic oxidation of metals, Tribology, Mechanical properties of metals, Electrochemical analysis, Chemical vapor deposition, Nanoindentation
Abstract: Abstract: This work presents the production and characterization of a controlled electrochemical modification of titanium surfaces, consisting of a two-step anodic spark deposition (ASD) process and a barrel finishing. The treatment was performed on titanium alloy Ti6Al4V, as most representative titanium alloy used in mechanical and aeronautical applications, where improved adhesion and tribological performances are required. FIB/SEM microstructural observations, nanoindentation, scratch, fretting tests and wear and friction tests were carried out both on laboratory specimens (planar pellets, 1in. diameter) and on Ti6Al4V bolts of different shapes and sizes, to investigate the effect of a three dimensional shape on the correct execution of the electrochemical treatment and on the coating's mechanical performance. The formation of a double layered coating was observed, with a slightly decreased surface hardness and stiffness compared to the metallic substrate and increased scratch and fretting wear resistances, thanks to an excellent adherence to the substrate, an optimal value of the hardness to modulus ratio (H/E) and a marked decrease of the friction coefficient. The proposed coating procedure could be therefore a suitable solution for those applications where low friction, wear resistance under low load sliding contact and corrosion resistance are required. [Copyright &y& Elsevier]
Copyright of Surface & Coatings Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 89274900
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Multi-step anodizing on Ti6Al4V components to improve tribomechanical performances.
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  Data: <searchLink fieldCode="AR" term="%22Diamanti%2C+M%2EV%2E%22">Diamanti, M.V.</searchLink><relatesTo>1</relatesTo><i> mariavittoria.diamanti@polimi.it</i><br /><searchLink fieldCode="AR" term="%22Sebastiani%2C+M%2E%22">Sebastiani, M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Mangione%2C+V%2E%22">Mangione, V.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Del+Curto%2C+B%2E%22">Del Curto, B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Pedeferri%2C+M%2EP%2E%22">Pedeferri, M.P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bemporad%2C+E%2E%22">Bemporad, E.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Cigada%2C+A%2E%22">Cigada, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Carassiti%2C+F%2E%22">Carassiti, F.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Surface+%26+Coatings+Technology%22">Surface & Coatings Technology</searchLink>. Jul2013, Vol. 227, p19-27. 9p.
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  Data: Abstract: This work presents the production and characterization of a controlled electrochemical modification of titanium surfaces, consisting of a two-step anodic spark deposition (ASD) process and a barrel finishing. The treatment was performed on titanium alloy Ti6Al4V, as most representative titanium alloy used in mechanical and aeronautical applications, where improved adhesion and tribological performances are required. FIB/SEM microstructural observations, nanoindentation, scratch, fretting tests and wear and friction tests were carried out both on laboratory specimens (planar pellets, 1in. diameter) and on Ti6Al4V bolts of different shapes and sizes, to investigate the effect of a three dimensional shape on the correct execution of the electrochemical treatment and on the coating's mechanical performance. The formation of a double layered coating was observed, with a slightly decreased surface hardness and stiffness compared to the metallic substrate and increased scratch and fretting wear resistances, thanks to an excellent adherence to the substrate, an optimal value of the hardness to modulus ratio (H/E) and a marked decrease of the friction coefficient. The proposed coating procedure could be therefore a suitable solution for those applications where low friction, wear resistance under low load sliding contact and corrosion resistance are required. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Surface & Coatings Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.surfcoat.2012.12.019
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      – Code: eng
        Text: English
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      – SubjectFull: Anodic oxidation of metals
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      – SubjectFull: Tribology
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      – SubjectFull: Mechanical properties of metals
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      – SubjectFull: Electrochemical analysis
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      – SubjectFull: Chemical vapor deposition
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      – SubjectFull: Nanoindentation
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      – TitleFull: Multi-step anodizing on Ti6Al4V components to improve tribomechanical performances.
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              Text: Jul2013
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              Y: 2013
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