Preparation and characterization of porous alumina ceramics through starch consolidation casting technique

Fabrication of Porous Alumina Ceramics Using Hollow Microspheres as the Pore-forming Agent

“…Since the ceramics is fabricated through a direct foaming process, that is form the nucleation gas bubbles within a liquid which then tend to grow and coalesce [17] , a large dispersion in pore size is observed. Similar results were also attained by other work by other methods for fabrication of porous alumina ceramics [18][19][20][21] . From Fig.…”

Potentials of fabricating porous ceramic bodies from kaolin for catalytic substrate applications

“…Numerous pore-forming agents have been investigated, including starch (Zivcová et al, 2012;Khattab et al, 2012;Garrido et al, 2011;Chen et al, 2011;Zivcová et al, 2009;Zivcová et al, 2010;Gregorová et al, 2006), graphite (Sarikaya and Dogan, 2013;Sanson et al, 2008;Ding et al, 2007;Boaro et al, 2003), lycopodium (Zivcová et al, 2007;Zivcová et al, 2008;Seržane et al, 2010), sucrose (Sarikaya andDogan, 2013: Ray et al, 2010;Wang et al, 2005) and polymethyl methacrylate Yao et al, 2005;Kumar et al, 2005) and others (Bai et al, 2012;Horri et al, 2012 andSilva et al, 2002). Even though starch is the most frequently used pore forming agent, possibly due to its biological origin and availability, the difficulties in maintaining the pore structure formed by the starch burn out, and the narrow size range of commercially available starch types (typically between 5 and 50 μm) limits its application when large pores are desirable .…”

Porous ceramic materials by pore-forming agent method: An intermingled fractal units analysis and procedure to predict thermal conductivity

“…One of the most pore-forming agent used is starch [13][14][15], but its application is limited to the production of large pores (5-50 μm) [9]. A good alternative is represented by polymers.…”