Fabrication and Characterization of Porous Mullite Coating on Porous Silicon Carbide Support
Mullite powders of stoichiometric composition were synthesized by sol-gel process with TEOS and Al(NO3)3·9H2O as silicon and aluminum source. Homogeneous mullite powders were used as the starting materials to prepare the porous mullite coating on the porous silicon carbide support by repeated dip-coating method. XRD analysis revealed that the mullite precursor gels almost completely transformed to orthorhombic crystalline mullite at 1200°C. The average pore diameter and porosity of the porous mullite coating were about 4.5µm and 52.3%, respectively.
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
N. Wang et al., "Fabrication and Characterization of Porous Mullite Coating on Porous Silicon Carbide Support", Key Engineering Materials, Vols. 280-283, pp. 1301-1304, 2005