Work

Preparation of Permeable Porous Alumina Ceramics by Gel Casting Combined with Particle Stacking and Sintering Method

Year: 2025

Type: article

Abstract: Porous ceramics have been widely used in various fields. In this paper, porous ceramics with through-hole structure were prepared using a novel and eco-friendly gel casting method with carrageenan as gelling agent. Especially, the idea of large size particle staking is introduced into the gel casting process. By introducing large size alumina aggregates as raw materials, and small size micropowders as filling materials, micropores were directly formed after the green body was sintered. To tune the pore size, pore structure, gas permeability, and the strength of final porous ceramics, the component of the raw materials including the alumina aggregates, the filling materials, and sintering additives in the slurry were concisely designed. Porous Al2O3 based ceramics with high gas permeability, high flexural strength, and moderate porosity were finally obtained.

Source: Materials

DOI: 10.3390/ma18153463

Authors: Zhe Cheng, Yuanqing Chen, Zhenping Wu, Yang Liu

Institutions: Shaanxi Polytechnic University, Xi'an University of Technology

Language: English

Topic: Advanced ceramic materials synthesis

Subfield: Ceramics and Composites

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: Natural Science Basic Research Program of Shaanxi Province