Microstructural and mechanical properties of spark plasma sintering of Ni22Cr11Al powders synthesized by mechanical alloying for thermal barrier coating

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dc.contributor.authorOmoniyi, FIS
dc.contributor.authorOlubambi, PA
dc.contributor.authorSadiku, RE
dc.date.accessioned2019-10-02T04:37:38Z
dc.date.available2019-10-02T04:37:38Z
dc.date.issued2018-09-29
dc.description.abstractThermal barrier coatings (TBCs) systems are used to protect hot sections of industrial gas turbine blades against high temperature corrosion and oxidation. Currently, MCrAlY powders up to 100 µm in diameter are used in the production of thermal barrier coatings by industrial gas turbine component manufacturers. It has been found that nanocrystalline MCrAlY layer provide better oxidation behaviour than currently used microstructure MCrAlY layer at elevated temperature. In the present study, nanocrystalline NI22Cr11Al composites was synthesized using high energy planetary ball milling for different periods of time, and the dense NI22Cr11Al alloy was fabricated by using spark plasma sintering process at different temperatures ranging from 1000°C to 1200°C. The resultant powder particles, bulk and dense samples were characterised using scanning electron microscope (SEM), X-ray diffraction analysis (XRD) and Micro Vickers hardness test. The results indicated that mechanical milling process produce morphology changes, particle size increase, crystallite size decrease down to nanometric level (40 nm) and formation of Nano dispersions in the process.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid485en
dc.identifier.citationOmoniyi, F.I.S., Olubambi, P.A. and Sadiku, R.E., 2018. Microstructural and Mechanical Properties of Spark Plasma Sintering of Ni22Cr11Al Powders Synthesized by Mechanical Alloying for Thermal Barrier Coating. J Material Sci Eng, 7(5), (485). DOI:10.4172/2169-0022.1000485en
dc.identifier.doi10.4172/2169-0022.1000485en
dc.identifier.endpage8en
dc.identifier.issn2169-0022
dc.identifier.issued5en
dc.identifier.journaltitleJournal of Material Sciences & Engineeringen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/8661
dc.identifier.volume7en
dc.language.isoenen
dc.publisherOMICS Internationalen
dc.relation.urihttps://www.omicsonline.org/open-access/microstructural-and-mechanical-properties-of-spark-plasma-sintering-of-ni22cr11al-powders-synthesized-by-mechanical-alloying-for-t-2169-0022-1000485-104669.html
dc.rights© 2018 Omoniyi FIS et alen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectMechanical alloyingen
dc.subjectMechanical propertiesen
dc.subjectMicrostructureen
dc.subjectSpark plasma sinteringen
dc.subjectThermal barrier coatingen
dc.titleMicrostructural and mechanical properties of spark plasma sintering of Ni22Cr11Al powders synthesized by mechanical alloying for thermal barrier coatingen
dc.typeArticle (peer-reviewed)en
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