Effects of titanium diboride on the mechanical, tribological, and microstructural properties of alumina toughened co-doped (Y-Mg) stabilized zirconia composites

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dc.contributor.authorYurdakul, Arife
dc.contributor.authorBalci, Osman
dc.date.accessioned2026-01-24T12:31:03Z
dc.date.available2026-01-24T12:31:03Z
dc.date.issued2021
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractFor the first time, this work purposes a novel composite production from alumina-toughened zirconia titanium diboride (ATZ-TiB2). In designing the composites, the matrix was composed of 3 mol % yttria (Y2O3) stabilized tetragonal zirconia polycrystalline (3Y-TZP) and 8 mol % magnesia (MgO) partially stabilized zirconia (8 Mg-PSZ) phases at an equal molar ratio. Besides, alumina (alpha-Al2O3) and TiB2 were added to the 3Y-TZP/8 Mg-PSZ matrix with 1 wt% and 0.5-2 wt% ratios, respectively. The composites were densified up to similar to 97% of their theoretical density (TD) through pressureless sintering at 1500-1600 degrees C for 1-2 h. The mechanical and tribological characteristics of ATZ-TiB2 composites were characterized by Vickers hardness (HV), indentation fracture toughness (KO, flexural strength (o), and wear tests. According to the best results, ATZ-0.5 wt% TiB2 composite (at 1500 degrees C-1 h) revealed the HV = 8.05 +/- 0.25 GPa and K-Ic = 6.35 +/- 0.25 MPa m(1/2), whereas that of the reference sample no including TiB 2 (at 1500 degrees C-1 h) exhibited the HV = 5.95 +/- 0.25 GPa and K-Ic = 4.92 +/- 0.25 MPa m(1/2), respectively. The highest sigma value was measured as 431 +/- 18 MPa for ATZ-1% wt. TiB2 composite (at 1500 degrees C-2 h), while the reference sample's sigma value was seen as 409 +/- 25 MPa (at 1500 degrees C-2 h). The wear rate W = 12 x 10(-5 )mm(3) m(-1) for ATZ-0.5 wt% TiB2 was quite lower than the reference sample's W = 2710 x 10(-5) mm(3) m(-1) (at 1500 degrees C-1 h). Based on the advanced electron microscopy and crystallographical analyses, thermally assisted t-ZrO2 -> m-ZrO2 phase transformation and TiB2 's intrinsic hardness were crucial for enhancing mechanical and tribological properties. Therefore, it is anticipated that the ATZ-TiB2 composites can be considered a potential candidate for structural applications such as ceramic bushings and welding pins.
dc.identifier.doi10.1007/s42114-021-00245-w
dc.identifier.endpage434
dc.identifier.issn2522-0128
dc.identifier.issn2522-0136
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85121422490
dc.identifier.scopusqualityQ1
dc.identifier.startpage415
dc.identifier.urihttps://doi.org/10.1007/s42114-021-00245-w
dc.identifier.urihttps://hdl.handle.net/20.500.12868/5619
dc.identifier.volume4
dc.identifier.wosWOS:000632364300002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringernature
dc.relation.ispartofAdvanced Composites and Hybrid Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260121
dc.subjectAlumina
dc.subjectATZ-TiB2
dc.subject8 Mg-PSZ
dc.subject3Y-TZP
dc.subjectZirconia
dc.titleEffects of titanium diboride on the mechanical, tribological, and microstructural properties of alumina toughened co-doped (Y-Mg) stabilized zirconia composites
dc.typeArticle

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