Influence of yttria-stabilized zirconia content on rheological behavior and mechanical properties of zirconia-toughened alumina fabricated by paste-based stereolithography

Li, Maoshan; Liu, Weiwei; Nie, Jianbin; Wang, Chuanyang; Li, Wenli

doi:10.1007/s10853-020-05494-6

Cited by 20 publications

(5 citation statements)

References 29 publications

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“…Moreover, it increases with higher ZrO 2 content in the slurry while maintaining the same volume fraction of the solid phase. Similar observations can be found in the literature [ 38 , 39 ].…”

Section: Resultssupporting

confidence: 92%

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: 92%

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

et al. 2021

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“…The fracture toughness coefficient values observed in the literature are characterized by a large discrepancy. The K IC values obtained in this study, determined by the Anstis equation, are much higher than those found in the available literature, where, for samples with 20 wt pct ZrO 2 content (Series I), the K IC value was 6.5 MPa m 0.5 in the study by Maoshan et al [46] or 5.93 MPa m 0.5 in the results published by Manshor et al [47] Conversely, the K IC values determined using the same equation for the composite with 85 wt pct ZrO 2 content in the study by Xia et al reached only 3.3 MPa m 0.5 . [48] The K IC values determined from the Niihara equations described in the literature are also characterized by a large discrepancy.…”

Section: Characteristics Of Specimens Formed By Centrifugal Slip Castingcontrasting

confidence: 83%

“…As shown by the results of Maoshan et al, when increasing the ZrO 2 content in the composite, the K IC value increases up to a certain limiting ZrO 2 content and then begins to decrease. [46] To some extent, this explains the decreasing K IC value trend as a function of ZrO 2 content in the material, as observed in the present study. The fracture toughness coefficient values observed in the literature are characterized by a large discrepancy.…”

Section: Characteristics Of Specimens Formed By Centrifugal Slip Castingsupporting

confidence: 82%

The Potential of Al2O3–ZrO2-Based Composites, Formed via CSC Method, in Linear Infrastructure Applications Based on Their Mechanical, Thermal and Environmental performance

Zygmuntowicz

Piotrkiewicz

Gizowska

et al. 2021

Metall Mater Trans A

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Ceramic-ceramic composites have been prepared using the centrifugal slip casting method (CSC). The method has so far been mainly utilized in making ceramic-metal composites. Al2O3–ZrO2 composites have been obtained with different shares of ZrO2, i.e., 15, 50 and 75 vol pct, respectively. Prior to sintering the composite samples, the rheological properties of the casting slips were investigated and thermogravimetric tests were performed. Upon sintering, all three series of the ceramic composites showed a density close to 100 pct and no microcracks or delamination. Phase, microstructural and mechanical investigations were carried out to determine what effect the share of ceramics has on the composites produced. An increase in the share of ZrO2 in the Al2O3–ZrO2 composite leads to a reduction in the growth of Al2O3 grains and a decrease in the average hardness. Cross-sectional hardness testing of the composites showed no evident gradient in any of the samples. Life cycle analysis (LCA) results indicate that the further optimization of the composite formation process, including up-scaling, allows to obtain Al2O3–ZrO2-based pipes possessing more favorable environmental characteristics compared with materials conventionally used for linear infrastructure, which is important in light of the global transformation toward sustainable construction and the circular economy. Graphical abstract

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“…Wu et al reported stereolithographic processing of Zirconia-Toughened Alumina (ZTA) to form a complex dentoid part with a high density close to 100%, and the results of mechanical testing were comparable to ZTA parts shaped by conventional methods [11]. ZTA processing has also been described using a similar stereolithography technique as described in this work [12]. Ceramic stereolithography was carried out using a laser power of 400 mW and a scan speed of 4000 mm/s to create specimens for mechanical testing.…”

Section: Introductionmentioning

confidence: 72%

High-Speed Alumina Stereolithography

2022

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The additive manufacturing of ceramics offers a reliable and repeatable method for fabricating parts with complex geometries. To compete with conventional ceramic forming methods, the time and cost associated with material and process optimization for ceramic stereolithography should be improved. Computational analysis methods can be utilized to reduce the number of experimental steps required for material and process optimization. This work used the discrete element method and ray tracing analyses to predict suitable material parameters and processing conditions for ceramic stereolithography. The discrete element method was used to create alumina particle dispersion models to predict suitable paste compositions, and ray tracing was used to predict suitable laser power and scan speed to achieve a sufficient curing depth for stereolithography processing. The predicted conditions of paste composition and processing parameters were comparable to experimental values, reducing the number of experimental iterations required for process optimization. Furthermore, suitable processing parameters for high-speed fabrication by stereolithography was predicted, achieving a processing speed much faster than previously reported ceramic stereolithography. The reduction in process optimization timeline, and the increase in fabrication speed, could increase the appeal of ceramic stereolithography to industry.

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Influence of yttria-stabilized zirconia content on rheological behavior and mechanical properties of zirconia-toughened alumina fabricated by paste-based stereolithography

Cited by 20 publications

References 29 publications

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

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

The Potential of Al2O3–ZrO2-Based Composites, Formed via CSC Method, in Linear Infrastructure Applications Based on Their Mechanical, Thermal and Environmental performance

High-Speed Alumina Stereolithography

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