Tailored pore structures and mechanical properties of porous alumina ceramics prepared with corn cob pore-forming agent

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dc.contributor.authorDele-Afolabi, T. T.
dc.contributor.authorHanim, M. A. Azmah
dc.contributor.authorOjo-Kupoluyi, O. J.
dc.contributor.authorCalin, R.
dc.contributor.authorZuhri, M. Y. M.
dc.date.accessioned2021-01-14T18:10:24Z
dc.date.available2021-01-14T18:10:24Z
dc.date.issued2021
dc.departmentKKÜ
dc.descriptionDele-Afolabi, Temitope Theophilus/0000-0003-0187-9208; Mohamed Yusoff, Mohd Zuhri/0000-0002-1069-7345
dc.description.abstractIn this work, the effects of porosity and different particle sizes of pore-forming agent on the mechanical properties of porous alumina ceramics have been reported. Different grades of porous alumina ceramics were developed using corn cob (CC) of different weight contents (5, 10, 15, and 20 wt%) and particle sizes (<63 mu m, 63-125 mu m and 125-250 mu m) as the pore-forming agent. Experimental results showed that total porosity and pore cavity size of the porous alumina ceramics increased with rising addition of CC pore former. Total porosity increased with increasing particle size of CC with the Al2O3-(<63)CC(5)sample exhibiting the lowest total porosity of 41.3 vol% while the highest total porosity of 68.1 vol% was exhibited by the Al2O3-125-250CC20. The particle size effect of CC on the mechanical properties revealed that diametral tensile strength and hardness of the porous alumina ceramics deteriorated with increasing particle size of CC pore former. The Al2O3-(<63)CC(5)sample exhibited the highest diametral tensile strength and hardness of 25.1 MPa and 768.2 HV, respectively, while Al2O3-(125-250)CC(20)exhibited the lowest values of 1.1 MPa and 35.9 HV. Overall, porous alumina ceramics with the smallest pore sizes under each particle size category exhibited superior mechanical properties in their respective categories.en_US
dc.description.sponsorshipUniversiti Putra Malaysia [/2017/9553600, /2016/9499400]; Kirikkale UniversityKirikkale Universityen_US
dc.description.sponsorshipUniversiti Putra Malaysia, Grant/Award Number: GPBI,/2017/9553600, GPIPM and /2016/9499400; Kirikkale Universityen_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1111/ijac.13621
dc.identifier.endpage252en_US
dc.identifier.issn1546-542X
dc.identifier.issn1744-7402
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85090441254
dc.identifier.scopusqualityQ2
dc.identifier.startpage244en_US
dc.identifier.urihttps://doi.org/10.1111/ijac.13621
dc.identifier.urihttps://hdl.handle.net/20.500.12587/12572
dc.identifier.volume18en_US
dc.identifier.wosWOS:000567564500001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWILEYen_US
dc.relation.ispartofINTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectcorn coben_US
dc.subjecthardnessen_US
dc.subjectmicrostructureen_US
dc.subjectdiametral tensile strengthen_US
dc.subjectpore sizeen_US
dc.subjectporosityen_US
dc.subjectporous aluminaen_US
dc.titleTailored pore structures and mechanical properties of porous alumina ceramics prepared with corn cob pore-forming agenten_US
dc.typeArticle

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