Fabrication methods and fracture behaviour of zirconia toughened alumina (ZTA) nano composite ceramic: A review

Al-Amin, Md.; Sarker, Saugata; Mumu, Homayra Tabassum; Gafur, M. A.

doi:10.1016/j.matpr.2020.12.450

Cited by 2 publications

(1 citation statement)

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“…Moreover, microstructural observations of the obtained composites’ cross sections (Series II and Series III) revealed that they exhibit a uniform distribution of ZrO 2 in the Al 2 O 3 matrix. Similar conclusions were presented in a paper by Al-Amin et al on a review of research into methods of forming ZTA nanocomposites [ 43 ]. According to Al-Amin et al, homogenisation of the slurry in a planetary mill makes it possible to obtain homogeneously dispersed ZrO 2 powder in the casting slip was used to produce samples [ 43 ].…”

Section: Resultssupporting

confidence: 88%

Al2O3/ZrO2 Materials as an Environmentally Friendly Solution for Linear Infrastructure Applications

et al. 2021

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The present work deals with the evaluation of the effect of ZrO2 on the structure and selected properties of shapes obtained using the centrifugal slip casting method. The samples were made of alumina and zirconia. The applied technology made it possible to produce tubes with a high density reaching 99–100% after sintering. Very good bonding was obtained at the Al2O3/ZrO2 interphase boundaries with no discernible delamination or cracks, which was confirmed by STEM observations. In the case of Al2O3/ZrO2 composites containing 5 vol.% and 10 vol.% ZrO2, the presence of equiaxial ZrO2 grains with an average size of 0.25 µm was observed, which are distributed along the grain boundaries of Al2O3. At the same time, the composites exhibited a very high hardness of 22–23 GPa. Moreover, the environmental influences accompanying the sintering process were quantified. The impacts were determined using the life cycle analysis method, in the phase related to the extraction and processing of raw materials and the process of producing Al2O3/ZrO2 composites. The results obtained show that the production of 1 kg of sintered composite results in greenhouse gas emissions of 2.24–2.9 kg CO2 eq. which is comparable to the amount of emissions accompanying the production of 1 kg of Polyvinyl Chloride (PVC), Polypropylene (PP), or hot-rolled steel products.

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Section: Resultssupporting

confidence: 88%