Application of sacrificial coatings and effect of composition on Al-Al3Ni ultrafine eutectic formation
This paper introduces an unconventional method designed for forming hypereutectic alloys via coating deposition onto the substrate surface and subsequent heat treatment of such systems. The coating was produced from 99.7 wt% nickel powder by means of high velocity oxyfuel (HVOF) spraying on...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2014-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391300038C.pdf |
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| author | Čelko L. Klakurková L. Smetana B. Slámečka K. Žaludová M. Hui D. Švejcar J. |
| author_facet | Čelko L. Klakurková L. Smetana B. Slámečka K. Žaludová M. Hui D. Švejcar J. |
| author_sort | Čelko L. |
| collection | DOAJ |
| description | This paper introduces an unconventional method designed for forming
hypereutectic alloys via coating deposition onto the substrate surface and
subsequent heat treatment of such systems. The coating was produced from 99.7
wt% nickel powder by means of high velocity oxyfuel (HVOF) spraying onto the
surface of 99.999 wt% aluminium sheet. The specimens were manufactured
immediately after the spraying. Specimens were heat-treated using a
differential thermal analysis (DTA) apparatus up to a temperature of 900°C
and then cooled down to the room temperature in an argon atmosphere with
constant heating and cooling rates, under which the NiAl3 intermetallic phase
formed within the initial substrate. Two different alloy microstructures
consisting of a coarse eutectic and an ultrafine well-dispersed eutectic were
produced. The formation processes and resultant microstructures were studied
by means of differential thermal analysis, metallography, scanning electron
microscopy, energy dispersive microanalysis, and image analysis techniques. |
| format | Article |
| id | doaj-art-ad566ab421e64d64a2482702a82cc3ed |
| institution | Kabale University |
| issn | 1450-5339 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-ad566ab421e64d64a2482702a82cc3ed2025-02-02T20:19:28ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392014-01-01501313610.2298/JMMB121013038C1450-53391300038CApplication of sacrificial coatings and effect of composition on Al-Al3Ni ultrafine eutectic formationČelko L.0Klakurková L.1Smetana B.2Slámečka K.3Žaludová M.4Hui D.5Švejcar J.6Brno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic + Brno University of Technology, CEITEC - Central European Institute of Technology, Brno, Czech RepublicBrno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic + Brno University of Technology, CEITEC - Central European Institute of Technology, Brno, Czech RepublicTechnical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech RepublicBrno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic + Brno University of Technology, CEITEC - Central European Institute of Technology, Brno, Czech RepublicTechnical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech RepublicUniversity of New Orleans, Department of Mechanical Engineering, New Orleans, USABrno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic + Brno University of Technology, CEITEC - Central European Institute of Technology, Brno, Czech RepublicThis paper introduces an unconventional method designed for forming hypereutectic alloys via coating deposition onto the substrate surface and subsequent heat treatment of such systems. The coating was produced from 99.7 wt% nickel powder by means of high velocity oxyfuel (HVOF) spraying onto the surface of 99.999 wt% aluminium sheet. The specimens were manufactured immediately after the spraying. Specimens were heat-treated using a differential thermal analysis (DTA) apparatus up to a temperature of 900°C and then cooled down to the room temperature in an argon atmosphere with constant heating and cooling rates, under which the NiAl3 intermetallic phase formed within the initial substrate. Two different alloy microstructures consisting of a coarse eutectic and an ultrafine well-dispersed eutectic were produced. The formation processes and resultant microstructures were studied by means of differential thermal analysis, metallography, scanning electron microscopy, energy dispersive microanalysis, and image analysis techniques.http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391300038C.pdfaluminium alloysaluminides miscellaneousplasma sprayingdifferential thermal analysisscanning electronmicroscopy |
| spellingShingle | Čelko L. Klakurková L. Smetana B. Slámečka K. Žaludová M. Hui D. Švejcar J. Application of sacrificial coatings and effect of composition on Al-Al3Ni ultrafine eutectic formation Journal of Mining and Metallurgy. Section B: Metallurgy aluminium alloys aluminides miscellaneous plasma spraying differential thermal analysis scanning electronmicroscopy |
| title | Application of sacrificial coatings and effect of composition on Al-Al3Ni ultrafine eutectic formation |
| title_full | Application of sacrificial coatings and effect of composition on Al-Al3Ni ultrafine eutectic formation |
| title_fullStr | Application of sacrificial coatings and effect of composition on Al-Al3Ni ultrafine eutectic formation |
| title_full_unstemmed | Application of sacrificial coatings and effect of composition on Al-Al3Ni ultrafine eutectic formation |
| title_short | Application of sacrificial coatings and effect of composition on Al-Al3Ni ultrafine eutectic formation |
| title_sort | application of sacrificial coatings and effect of composition on al al3ni ultrafine eutectic formation |
| topic | aluminium alloys aluminides miscellaneous plasma spraying differential thermal analysis scanning electronmicroscopy |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391300038C.pdf |
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