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Corrosion resistance of multicomponent diffusive layers produced on AZ91D magnesium alloy by hybrid method

M. Banaszek

Abstract

Magnesium alloys have an attractive constructional and functional properties, especially low specific weight and high specific mechanical properties. This unique features makes it the best choice for number of demanding applications in various fields of industry e.g. automobile, aerospace, IT. Moreover magnesium alloys provide a promising alternative to common used aluminum alloys for the automotive components. Because of their properties they are very prospective for applications in the moved component field. However, their expansion into such application areas is restricted by weak corrosion and wear resistance. That is why there is a great need to enhance the surface protection of magnesium alloys. Formation of the diffusive multicomponent titanium based layers on AZ91D alloy by hybrid method is a way to improve both corrosion and wear resistance. The hybrid method combine the glow discharge nitriding or oxynitriding of the magnesium alloy precoating with titanium or titanium with aluminum or chromium sublayer coating using the magnetron sputtering. In the present work the main objective was to produce the multicomponent titanium based layers on AZ91D magnesium alloy by hybrid method, in order to improve the corrosion resistance. Furthermore, the influence of sublayers, nitriding and oxynitriding process on the corrosion and wear resistance of AZ91D magnesium alloy was examined. Characteristic of the produced multicomponent diffusive layers consisted of the structure and properties tests. It was found that produced titanium based multicomponent layers have a diffusive character and improve resistance to corrosion of magnesium alloys, hardness and resistance to wear. Further corrosion improvement is possible to achieve by final impregnation operation. For the surface engineering of magnesium alloys it is important to improve the corrosion and wear resistance at the same time. It was found that produced the diffusive multicomponent titanium nitride based layers with thick aluminum sublayer is the optimal solution and provides the best results of both these properties.
Record ID
WUTb86e8074f8c54d9eac91886061aa14a7
Diploma type
Master of Science
Author
M. Banaszek (FMSE/DSE) M. Banaszek,, Division of Surface Engineering (FMSE/DSE)Faculty of Materials Science and Engineering (FMSE)
Title in Polish
Odporność korozyjna wieloskładnikowych warstw dyfuzyjnych na stopie magnezu AZ91D wytwarzanych metodą hybrydową
Supervisor
Michał Tacikowski (FMSE/DSE) Michał Tacikowski,, Division of Surface Engineering (FMSE/DSE)Faculty of Materials Science and Engineering (FMSE)
Certifying unit
Faculty of Materials Science and Engineering (FMSE)
Affiliation unit
Division of Surface Engineering (FMSE/DSE)
Study subject / specialization
, Inżynieria Powierzchni
Language
(pl) Polish
Status
Finished
Defense Date
14-02-2012
Issue date (year)
2012
Internal identifier
IM-001562
Reviewers
Katarzyna Konopka (FMSE/DSMP) Katarzyna Konopka,, Division of Ceramic Materials and Polymers (FMSE/DSMP)Faculty of Materials Science and Engineering (FMSE) Dariusz Oleszak (FMSE/DCFM) Dariusz Oleszak,, Division of Construction and Functional Materials (FMSE/DCFM)Faculty of Materials Science and Engineering (FMSE)
Keywords in Polish
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Keywords in English
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Abstract in Polish
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Uniform Resource Identifier
https://repo.pw.edu.pl/info/master/WUTb86e8074f8c54d9eac91886061aa14a7/
URN
urn:pw-repo:WUTb86e8074f8c54d9eac91886061aa14a7

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