Enhanced mechanical properties of 3D printed alumina ceramics by using sintering aids

Li, He; Elsayed, Hamada; Colombo, Paolo

doi:10.1016/j.ceramint.2023.05.025

Cited by 10 publications

(1 citation statement)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Adding sintering aids, such as MgO or ZrO2, into the alumina ceramic, makes it able to suppress the growth of grains, thereby largely preventing more pores from generating [21,22]. Furthermore, some liquid phase sintering aids which transform into a liquid phase at the stage of high-temperature sintering, e.g., SiO2 and CaO, can lower the sintering temperature of alumina ceramics, together with reducing the mechanical strength [6,[23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Reducing Water Absorption and Improving Flexural Strength of Aluminosilicate Ceramics by MnO2 Doping

Yang,

Lu,

et al. 2024

Materials

View full text Add to dashboard Cite

As key performance indicators, the water absorption and mechanical strength of ceramics are highly associated with sintering temperature. Lower sintering temperatures, although favorable for energy saving in ceramics production, normally render the densification degree and water absorption of as-prepared ceramics to largely decline and increase, respectively. In the present work, 0.5 wt.% MnO2, serving as an additive, was mixed with aluminosilicate ceramics using mechanical stirring at room temperature, achieving a flexural strength of 58.36 MPa and water absorption of 0.05% and lowering the sintering temperature by 50 °C concurrently. On the basis of the results of TG-DSC, XRD, MIP, and XPS, etc., we speculate that the MnO2 additive promoted the elimination of water vapor in the ceramic bodies, effectively suppressing the generation of pores in the sintering process and facilitating the densification of ceramics at a lower temperature. This is probably because the MnO2 transformed into a liquid phase in the sintering process flows into the gap between grains, which removed the gas inside pores and filled the pores, suppressing the generation of pores and the abnormal growth of grains. This study demonstrated a facile and economical method to reduce the porosity and enhance the densification degree in the practical production of aluminosilicate ceramics.

show abstract

Section: Introductionmentioning

confidence: 99%

Reducing Water Absorption and Improving Flexural Strength of Aluminosilicate Ceramics by MnO2 Doping

Yang,

Lu,

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

Perspectives Toward Damage‐Tolerant Nanostructure Ceramics

Fan,

Wen,

Chen

et al. 2024

Advanced Science

View full text Add to dashboard Cite

Advanced ceramic materials and devices call for better reliability and damage tolerance. In addition to their strong bonding nature, there are examples demonstrating superior mechanical properties of nanostructure ceramics, such as damage‐tolerant ceramic aerogels that can withstand high deformation without cracking and local plasticity in dense nanocrystalline ceramics. The recent progresses shall be reviewed in this perspective article. Three topics including highly elastic nano‐fibrous ceramic aerogels, load‐bearing nanoceramics with improved mechanical properties, and implementing machine learning‐assisted simulations toolbox in understanding the relationship among structure, deformation mechanisms, and microstructure‐properties shall be discussed. It is hoped that the perspectives present here can help the discovery, synthesis, and processing of future structural ceramic materials that are insensitive to processing flaws and local damages in service.

show abstract

Alumina–copper woodpile-kind locally resonant phononic crystal

Beniwal,

Chandraprakash

2023

Appl. Phys. A

View full text Add to dashboard Cite

Enhanced mechanical properties of 3D printed alumina ceramics by using sintering aids

Cited by 10 publications

References 46 publications

Reducing Water Absorption and Improving Flexural Strength of Aluminosilicate Ceramics by MnO2 Doping

Reducing Water Absorption and Improving Flexural Strength of Aluminosilicate Ceramics by MnO2 Doping

Perspectives Toward Damage‐Tolerant Nanostructure Ceramics

Alumina–copper woodpile-kind locally resonant phononic crystal

Contact Info

Product

Resources

About