Cracking mechanism in laser directed energy deposition of melt growth alumina/aluminum titanate ceramics

Y Huang, D Wu, X Yu, G Ma, J Han… - Journal of the …, 2023 - Wiley Online Library
Thanks to its advantages of high efficiency and near‐net shaping, laser directed energy
deposition (LDED) is rapidly becoming a remarkable preparation technology for high‐purity …

Microstructure–property connections for porous ceramics: The possibilities offered by micromechanics

G Bruno, M Kachanov - Journal of the American Ceramic …, 2016 - Wiley Online Library
Microstructure of porous ceramics is highly “irregular”: it comprises pores and microcracks of
diverse shapes and orientations. This makes their quantitative modeling challenging, and …

Effect of TiO2 addition on the sintering densification and mechanical properties of MgAl2O4–CaAl4O7–CaAl12O19 composite

L Xu, M Chen, X Yin, N Wang, L Liu - Ceramics International, 2016 - Elsevier
Materials designed in the high-alumina region of Al 2 O 3–MgO–CaO system have been
widely used in many technological fields. However, their further applications are limited by …

Effect of titania addition on the properties of freeze-cast alumina samples

AMA Silva, EHM Nunes, DF Souza, DL Martens… - Ceramics …, 2015 - Elsevier
This work investigated the behavior of TiO 2-containing α-Al 2 O 3 samples prepared by the
freeze-casting technique. Camphene and liquid nitrogen were used as the solvent and …

Porous microcracked ceramics under compression: Micromechanical model of non-linear behavior

G Bruno, M Kachanov - Journal of the European Ceramic Society, 2013 - Elsevier
Stress–strain curves for porous microcracked ceramics (such as aluminum titanate) under
compression exhibit non-linearity, hysteresis, and a sharp increase in stiffness when …

Fracture behaviour of microcrack-free alumina–aluminium titanate ceramics with second phase nanoparticles at alumina grain boundaries

S Bueno, MH Berger, R Moreno, C Baudín - Journal of the European …, 2008 - Elsevier
Alumina+ 10vol.% aluminium titanate composites were obtained by colloidal filtration and
reaction sintering of alumina and titania. The materials were dense with aluminium titanate …

Dense mullite–zirconia–zirconium titanate ceramic composites by reaction sintering

NM Rendtorff, S Gómez, MR Gauna, MS Conconi… - Ceramics …, 2016 - Elsevier
Materials from the Al 2 O 3–SiO 2–ZrO 2 and the Al 2 O 3–SiO 2–ZrO 2–TiO 2 systems have
several high temperature applications because they present the good refractoriness …

Material removal modes and processing mechanism in microultrasonic machining of ball ceramic tool

J Zhao, X Xu, WQ Li, W Hang - Ceramics International, 2024 - Elsevier
Microelectrochemical systems (MEMSs) have important applications in electronic
information, aerospace, national defense and other fields. The microhemispherical concave …

Micro-and macroscopic thermal expansion of stabilized aluminum titanate

G Bruno, A Efremov, B Wheaton, I Bobrikov… - Journal of the European …, 2010 - Elsevier
The lattice expansion of aluminum titanate (AT) obtained by firing a mixture of alumina,
rutile, strontium and calcium carbonate and silica was measured using neutron and …

Fabrication and characterization of robust freeze-cast alumina scaffolds with dense ceramic walls and controllable pore sizes

MQ Sun, P Shen, QC Jiang - Journal of Materials Science, 2019 - Springer
Directionally aligned prismatic and lamellar porous alumina scaffolds with a high strength-to-
density ratio were fabricated from submicron Al 2 O 3 powders and a tiny quantity of …