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المؤلفRamesh S.
المؤلفSara Lee K.Y.
المؤلفTan C.Y.
المؤلفWong Y.H.
المؤلفJohnson Alengaram U.
المؤلفTarlochan F.
المؤلفRamesh S.
المؤلفTeng W.D.
المؤلفSutharsini U.
المؤلفSarhan A.A.D.
تاريخ الإتاحة2020-02-24T08:57:13Z
تاريخ النشر2018
اسم المنشورCeramics International
المصدرScopus
الرقم المعياري الدولي للكتاب2728842
معرّف المصادر الموحدhttp://dx.doi.org/10.1016/j.ceramint.2018.07.215
معرّف المصادر الموحدhttp://hdl.handle.net/10576/12993
الملخصThe effect of various amounts of copper oxide (CuO) up to 1 wt% on the densification behaviour and mechanical properties of 3 mol% yttria-tetragonal zirconia polycrystal (Y-TZP) were studied by using microwave (MW) sintering method. The MW sintering was performed at temperatures between 1100 ?C and 1400 ?C, with a heating rate of 30 ?C/min. and holding time of 5 min. The beneficial effect of MW in enhancing densification was also compared for the undoped and 0.2 wt% CuO-doped Y-TZP when subjected to conventional sintering (CS) method. The results showed that significant enhancement in the relative density and Vickers hardness were observed for the undoped Y-TZP when MW-sintered between 1100 ?C and 1250 ?C. It was revealed that the 0.2 wt% CuO-doped Y-TZP and MW sintered at 1250?1300 ?C could attain ? 99.8% of theoretical density, Vickers hardness of about 14.4 GPa, fracture toughness of 7.8 MPam1/2 and exhibited fine equiaxed tetragonal grain size of below 0.25 ?m. In contrast, the addition of 1 wt% CuO was detrimental and the samples exhibited about 50% monoclinic phase upon sintering coupled with poor bulk density and mechanical properties. The study also revealed that the addition of 0.2 wt% CuO and subjected to conventional sintering produced similar densification as that obtained for microwave sintering, thus indicating that the dopant played a more significant role than the sintering method.
راعي المشروعThe authors thank University of Malaya for the financial support (PPP Grant No. PG091-2015A ) in carrying out this research.
اللغةen
الناشرElsevier Ltd
الموضوعCopper oxide
Mechanical properties
Microwave sintering
Sintering additive
Y-TZP
العنوانEffect of microwave sintering on the properties of copper oxide doped Y-TZP ceramics
النوعArticle
الصفحات19639 - 19645
رقم العدد16
رقم المجلد44
dc.accessType Abstract Only


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