Effect of Colloidal Silica and Nano Boehmite Mixture on Reaction Sintering, Microstructure and Physical Properties of Tialite

Golsa Naderi; Hamid Reza Rezaie; Ali Shokuhfar; Rahim Naghizadeh

doi:10.4028/www.scientific.net/DDF.273-276.554

Paper Titles

Al-Li Surface Alloying in the Electrolytic Method
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Investigation of Homogenization Treatment in Al- Li- Cu- Zr Alloys
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Effect of Antioxidants and Atmosphere on the Phase Formation and Microstructure of In Situ MgO-Al₂O₃ Spinels
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Formation and Decomposition of Sol-Gel Synthesized Aluminum Titanate Nano Powders at the Presence of Fe₂O₃ Additive
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Effect of Colloidal Silica and Nano Boehmite Mixture on Reaction Sintering, Microstructure and Physical Properties of Tialite
p.554

Nonclassical Properties of Molecular Diffusion in Liquids and Dense Gases
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Nanoparticle Friction Force and Effective Viscosity of Nanosuspensions
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Diffusion of Refractory Elements in Ni—X—Y (X, Y: Co, Re, Ru, W) Ternary Alloys
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Diffusion-Evaporation Studies of Binary Mixtures in Capillary Tubes
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Effect of Colloidal Silica and Nano Boehmite Mixture on Reaction Sintering, Microstructure and Physical Properties of Tialite

Abstract:

Aluminum titanate (Al2TiO5) is an engineering ceramic with low thermal expansion coefficient, excellent thermal shock resistance, good refractoriness and non-wetting with most metals. In this work the use of colloidal silica and nano boehmite mixture in proper stoichiometry of mullite in aluminum-titanate (tialite) has been studied. Analytical structural evaluations including XRD, TEM and SEM have been used to characterize the influence of these additives on phase transformation, sintering process and microstructure. The results show that the presence of nano size silica and boehmite enhanced the densification leads to fine microstructure, mullite phase formation and improve the tialite ceramics properties.