Toward excellent performance of Al2O3-ZrO2 reticulated porous ceramics: New insights based on residual stress

Chen, Ruoyu; Jia, Wenbao; Hei, Daqian; Wang, Yufan

doi:10.1016/j.ceramint.2018.08.209

Cited by 35 publications

(8 citation statements)

References 32 publications

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“…Moreover, defects and pores were not considered. The thermal expansion coefficient of chamotte was obtained according to the work, and the elastic module of zircon was set as 230 GPa. The results showed that there existed maximum thermal stress on the surface and edge of zircon at the bottom of the specimens, the stress in the chamotte matrix is reduced, and the thermal stress inside the zircon is minimal.…”

Section: Resultsmentioning

confidence: 99%

A simple approach for improving high‐temperature mechanical and insulation performance in chamotte with added zircon

Xiang

et al. 2019

Int J Applied Ceramic Tech

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Chamotte is one of the most commonly used raw materials for aluminosilicate refractories. The present work concerns the high-temperature performance of the chamotte-zircon composite. The crystalline phase, mechanical property, and thermal conductivity were evaluated. In addition, the finite element method was applied to analyze stress distribution. Zircon accelerated the melting of cristobalite in chamotte during sintering. After adding zircon, a drastic elastic modulus change at about 230°C was avoided, and the infrared shielding effect of zircon reduced the thermal conductivity when the temperature was greater than 500°C. At last, based on the results of finite element method, increasing zircon content reduced stress concentration. K E Y W O R D Saluminosilicates, finite element analysis, modulus of elasticity, refractories, zircon

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Section: Resultsmentioning

confidence: 99%

A simple approach for improving high‐temperature mechanical and insulation performance in chamotte with added zircon

Xiang

et al. 2019

Int J Applied Ceramic Tech

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“…Hydroxyapatite (HA), Ca 10 (PO 4 ) 6 (OH) 2 , is considered † Yongxia Yao and Wei Qin contributed equally to this work. gas foaming, and freeze-drying, cannot assure the accuracy and desired pores and channels [4]. As known, the porous structure is very important for bio-ceramics, which facilitates cell migration, nutrient delivery, bone ingrowth, or vascularization [5].…”

Section: Introduction mentioning

confidence: 99%

High performance hydroxyapatite ceramics and a triply periodic minimum surface structure fabricated by digital light processing 3D printing

et al. 2021

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High performance hydroxyapatite (HA) ceramics with excellent densification and mechanical properties were successfully fabricated by digital light processing (DLP) three-dimensional (3D) printing technology. It was found that the sintering atmosphere of wet CO2 can dramatically improve the densification process and thus lead to better mechanical properties. HA ceramics with a relative density of 97.12% and a three-point bending strength of 92.4 MPa can be achieved at a sintering temperature of 1300 , which makes a solid foundation for application ℃ in bone engineering. Furthermore, a relatively high compressive strength of 4.09 MPa can be also achieved for a DLP-printed p-cell triply periodic minimum surface (TPMS) structure with a porosity of 74%, which meets the requirement of cancellous bone substitutes. A further cell proliferation test demonstrated that the sintering atmosphere of wet CO2 led to improve cell vitality after 7 days of cell culture Moreover, with the possible benefit from the bio-inspired structure, the 3D-printed TPMS structure significantly improved the cell vitality, which is crucial for early osteogenesis and osteointegration.

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“…HA scaffolds, which are characterized by complex and precise hollow structures, cannot be obtained by traditional fabrication methods, such as gas foaming, organic foam impregnation, freeze-drying, gel casting, or the sol-gel method. 8,9 In this case, 3D printing ceramic technology may be the best route to achieve these scaffolds. 10,11 Some studies have shown that HA ceramic scaffolds had been prepared by 3D printing.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, ensuring the high accuracy of bracket manufacturing is an important consideration in bone scaffolds. HA scaffolds, which are characterized by complex and precise hollow structures, cannot be obtained by traditional fabrication methods, such as gas foaming, organic foam impregnation, freeze‐drying, gel casting, or the sol‐gel method 8,9 . In this case, 3D printing ceramic technology may be the best route to achieve these scaffolds 10,11 …”

Section: Introductionmentioning

confidence: 99%

Study of falling‐down‐type DLP 3D printing technology for high‐resolution hydroxyapatite scaffolds

You

et al. 2021

Int J Applied Ceramic Tech

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In this study, a strategy to print hydroxyapatite (HA) ceramics based on fallingdown-type digital light processing (DLP) 3D printing technology with high accuracy was proposed. The monolayer curing thickness and curing broadening of the samples were compared under different conditions, and the most suitable photoinitiator for the system and optimal amount of additive dye in the slurry were obtained. The light power density and single-layer exposure time of the light source of the DLP printer were optimized, and a number of high-resolution models of HA scaffolds with an exact square-channel aperture width of 380 μm were successfully printed. The shrinkage, microstructural, and mechanical properties of the HA ceramic scaffolds were studied at different sintering temperatures. The microstructure and composition of the scaffolds were also characterized by scanning electron microscopy and X-ray diffractometry. The compressive strength and compressive modulus of HA porous scaffold were 11.61 MPa and 1.26 GPa, respectively. And the porosity of scaffold was 31.67%.

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Toward excellent performance of Al2O3-ZrO2 reticulated porous ceramics: New insights based on residual stress

Cited by 35 publications

References 32 publications

A simple approach for improving high‐temperature mechanical and insulation performance in chamotte with added zircon

A simple approach for improving high‐temperature mechanical and insulation performance in chamotte with added zircon

High performance hydroxyapatite ceramics and a triply periodic minimum surface structure fabricated by digital light processing 3D printing

Study of falling‐down‐type DLP 3D printing technology for high‐resolution hydroxyapatite scaffolds

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