Fabrication of silica-based ceramic cores with internal lattice structures by stereolithography

Abstract

Born in 1972, Ph.D, Professor. His research interests mainly focus on investment casting and additive manufacturing of ceramic materials.

Vat photopolymerization 3D printing of Al2O3 ceramic cores with strip‐shaped pores by using polyamide 6 fiber template

“…The increase in porosity results in a subsequent decrease in bulk density. When using PA6 fibers with a diameter of 17 µm, the porosity of the ceramics increased from 30.43% to 34.46% and the bulk density decreased from 2.85 g/cm 3 to 2.66 g/cm 3 , as the addition amount increasing from 1 vol.% to 3 vol.%. When using PA6 fibers with a diameter of 40 µm, the porosity of the ceram-ics increased from 27.04% to 31.77% and the bulk density decreased from 2.97 g/cm 3 to 2.70 g/cm 3 , as the addition amount increasing from 1 vol.% to 3 vol.%.…”

“…When using PA6 fibers with a diameter of 17 µm, the porosity of the ceramics increased from 30.43% to 34.46% and the bulk density decreased from 2.85 g/cm 3 to 2.66 g/cm 3 , as the addition amount increasing from 1 vol.% to 3 vol.%. When using PA6 fibers with a diameter of 40 µm, the porosity of the ceram-ics increased from 27.04% to 31.77% and the bulk density decreased from 2.97 g/cm 3 to 2.70 g/cm 3 , as the addition amount increasing from 1 vol.% to 3 vol.%. Combined with the SEM images in Figure 1, it was seen that the porosity was due to two types of pores, large pores left by the decomposition of the PA6 fibers and small pores left by lowering the sintering temperature.…”

“…1 SiO 2 and Al 2 O 3 are the most widely used ceramic core materials today. [2][3][4] Especially, Al 2 O 3 ceramic cores have received much attention owing to their excellent high-temperature stability, high-temperature creep resistance, and high-temperature strength. 5,6 Due to the complexity of the flow path inside the hollow turbine blade, the shape and structure of the ceramic cores are also extremely complex.…”

“…Hollow turbine blades are manufactured using complex shaped investment cast cores 1 . SiO 2 and Al 2 O 3 are the most widely used ceramic core materials today 2–4 . Especially, Al 2 O 3 ceramic cores have received much attention owing to their excellent high‐temperature stability, high‐temperature creep resistance, and high‐temperature strength 5,6 .…”

Analysis of Cooling a Printed 3D Mold Using a Casting and Solidification Simulation of a CuSn20 Bronze Bell Casting

“…the possibility of making casting cores or molds using aM technology is also known [12]. the binders used in these techniques include alkyd, furan or silicate resins [13,14]. as new technologies and their potential applications develop, the materials' unique properties must be considered [15].…”