Chemo-Rheological Behavior of Aqueous Titanium Carbide Suspension and Evaluation of the Gelcasted Green Body Properties

Abstract

Gel-casting is an advanced colloidal processing method for fabricating ceramic green parts. In this project acrylamide-based monomers were used as a gelcasting system. The effects of tetramethylammonium hydroxide and polyethylenimine dispersants on the premix solution containing titanium carbide powder have been studied via observation of the zeta potential and rheological behavior. The effect of various parameters on the gelation time and viscosity of solution and flexural strength and the shrinkage rate of titanium carbide green body were investigated. The results presented that the order of dispersion capacity of the tetramethylammonium hydroxide dispersant was better than the polyethylenimine dispersants. The results showed that the gelation time decreased and viscosity increased with increasing the monomer content, solid loading, initiator amount and temperature. The highest bending strength (39 MPa) was obtained for the samples containing 25 wt.% monomer content and 50% solid loading.

Synthesis of Uniform Size Rutile TiO2 Microrods by Simple Molten-Salt Method and Its Photoluminescence Activity

“…Hence, the broad peaks at around 3420 cm −1 show stretching vibration of the OH group. A peak position at around 1629 cm −1 represents OH bending vibration on the rutile TiO 2 microrod surface [ 36 ]. The peak appearing at 1012 cm −1 is a characteristic peak of O-O stretching vibration [ 36 ].…”

“…A peak position at around 1629 cm −1 represents OH bending vibration on the rutile TiO 2 microrod surface [ 36 ]. The peak appearing at 1012 cm −1 is a characteristic peak of O-O stretching vibration [ 36 ]. However, no impurity peaks regarding phosphate were observed in all synthesized TiO 2 microrods.…”

Low temperature curable titanium-based sols for visible light photocatalytic coatings for glass and polymeric substrates

“…As expected, the reference sample treated at 450 °C lacks these signals as a consequence of complete dehydroxylation. 49…”

“…As expected, the reference sample treated at 450 1C lacks these signals as a consequence of complete dehydroxylation. 49 All the coatings were homogeneous and transparent (see Fig. S2, ESI †).…”

Electrochemical evaluation of AZ31 Mg alloy in corrosion protection of titanium silicon oxide from Earle's solution

“…64 The new band that appeared at 1410 cm À1 is represented by the lattice vibration of TiO 2 . 65 The bending vibration band of Si-O-Si appeared at 1039 cm À1 and the metal oxide at 592 cm . 46…”